SI1142-A10-GMR Silicon Laboratories Inc, SI1142-A10-GMR Datasheet
SI1142-A10-GMR
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SI1142-A10-GM
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SI1142-A10-GMR Summary of contents
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... The photodiode response and associated digital conversion circuitry provide excellent immunity to artificial light flicker noise and natural light flutter noise. With two or more LEDs, the Si1142/43 is capable of supporting multiple-axis proximity motion detection. The Si1141/42/43 devices are provided in a 10-lead 2x2 mm QFN package and are capable of operation from 1.8 to 3.6 V over the – ...
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... Regulator Temp Visible Infrared INT SCL SDA 1. Si1142 and Si1143 only. 2. Si1143 only. 3.3 V Host SDA SCL INT 3.3 V Host Figure 2. Si1143 Application with Three LEDs and Separate LED Power Supply Note: For more application examples, refer to “AN498: irLED Selection Guide for Si114x Proximity Applications”. ...
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T C ABLE O F ONTENTS Section Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Si1141/42/43 1. Electrical Specifications Table 1. Recommended Operating Conditions Parameter Symbol V Supply Voltage DD V OFF Supply Voltage Supply Ripple Voltage DD Operating Temperature SCL, SDA, Input High Logic Voltage SCL, SDA Input Low Logic Voltage ...
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Table 2. Absolute Maximum Ratings Parameter V Supply Voltage DD Operating Temperature Storage Temperature LED1, LED2, LED3 Voltage INT, SCL, SDA Voltage Maximum total current through LED1, LED2 and LED3 Maximum total current through GND ESD Rating Table 3. Performance ...
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Si1141/42/43 Table 3. Performance Characteristics Parameter Symbol LED Driver Saturation 2,3 Voltage LED1, LED2, LED3 t PS Pulse Width LED1, LED2, LED3 Leakage Current LED1, LED2, LED3 I LEDx Active Current Notes: 1. Unless specifically stated in "Conditions", electrical data ...
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Table 3. Performance Characteristics Parameter Symbol 4 Actively Measuring Time Visible Photodiode Response Small Infrared Photodiode Response Notes: 1. Unless specifically stated in "Conditions", electrical data assumes ambient light levels < 1 klx. 2. Proximity-detection performance may be degraded, especially ...
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Si1141/42/43 Table 3. Performance Characteristics Parameter Symbol Large Infrared Photodi- ode Response Visible Photodiode Noise Small Infrared Photodiode Noise Large Infrared Photodi- ode Noise Visible Photodiode Offset Drift Notes: 1. Unless specifically stated in "Conditions", electrical data assumes ambient light ...
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Table 3. Performance Characteristics Parameter Symbol Small Infrared Photodiode Offset Drift SCL, SDA, INT Output V OL Low Voltage Notes: 1. Unless specifically stated in "Conditions", electrical data assumes ambient light levels < 1 klx. 2. Proximity-detection performance may be ...
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Si1141/42/43 2 Table Timing Specifications Parameter Clock Frequency Clock Pulse Width Low Clock Pulse Width High Rise Time Fall Time Start Condition Hold Time Start Condition Setup Time Input Data Setup Time Input Data Hold Time Stop ...
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Functional Description 2.1. Introduction The Si1141/42/ active optical reflectance proximity detector and ambient light sensor whose operational state is controlled through registers accessible through the I to initiate on-demand proximity detection or ambient light sensing. The host ...
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Si1141/42/43 When operating in the lower signal range possible to saturate the ADC when the ambient light level is high. Any overflow condition is reported in the RESPONSE register, and the corresponding data registers report a value of ...
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The window can be applied to either the Visible Ambient Measurement, or the Infrared Ambient Measurement, but not both. However, monitoring the ambient change in either channel should allow notification that the ambient light level has changed. Figure 3. Photodiode ...
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Si1141/42/43 2 encountered write access with only two bytes is typically used to set up the Si1141/42/43 internal address 2 in preparation for read The I C read access, like the I ...
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Figure 9. Si1141/42/43 REG ADDRESS Format Notes: Gray boxes are driven by the host to the Si1141/42/43 White boxes are driven by the Si1141/42/43 to the host ACK or “acknowledge” NACK or ...
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Si1141/42/43 3. Operational Modes The Si1141/42/43 can be in one of many operational modes at any one time important to consider the operational mode since the mode has an impact on the overall power consumption of the Si1141/42/43. ...
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Autonomous Operation Mode The Si1141/42/43 can be placed in the Autonomous Operation Mode where measurements are performed automatically without requiring an explicit host command for every measurement. The PS_AUTO, ALS_AUTO and PSALS_AUTO commands are used to place the Si1141/42/43 ...
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Si1141/42/43 4. Programming Guide 4.1. Command and Response Structure 2 All Si1141/42/ registers (except writes to the COMMAND register) are read or written without waking up the internal sequencer. A complete list of the the ...
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Command Protocol 2 The I C map implements a bidirectional message box between the host and the Si1141/42/43 Sequencer. Host- 2 writable I C registers facilitate host-to-Si1141/42/43 communication, while read-only I Si1141/42/43-to-host communication. 2 Unlike the other host-writable I ...
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Si1141/42/43 Table 5. Command Register Summary (Continued) COMMAND Register PARAM_W R Register Name Encoding ALS_FORCE 000 00110 — PSALS_FORC 000 00111 — E Reserved 000 01000 — PS_PAUSE 000 01001 — ALS_PAUSE 000 01010 — PSALS_PAUS 000 01011 — E ...
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Table 6. Response Register Error Codes RESPONSE Register 0000 cccc NO_ERROR. The lower bit is a circular counter and is incremented every time a command has completed. This allows the host to keep track of commands sent to the Si1141/42/43. ...
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Si1141/42/43 22 Rev. 1.1 ...
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Si1141/42/43 Rev. 1.1 23 ...
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Si1141/42/43 Table 9. Resource Summary for Hardware Pins Pin Name LED Current Drive LED1 LED1_I in PSLED12[3:0] LED2 LED2_I in PSLED12[7:4] LED3 LED3_I in PSLED3[3:0] INT The interrupts of the Si1141/42/43 are controlled through the INT_CFG, IRQ_ENABLE, IRQ_MODE1, IRQ_MODE2 and ...
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Table 10. PS1 Channel Interrupt Resources IRQ_ENABLE[2] IRQ_MODE1[5:4] PS1_IE PS1_IM[1: Note: There is hysteresis applied (PS_HYST) and history checking (PS_HISTORY). PS1_TH, PS_HYST and are encoded in 8-bit compressed ...
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Si1141/42/43 Table 13. Ambient Light Sensing Interrupt Resources IRQ_ENABLE[1:0] IRQ_MODE1[2:0] ALS_IE[1:0] ALS_IM[2: Notes: 1. For ALS_IR channel, interrupts per sample is not ...
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Signal Path Software Model The following diagram gives an overview of the signal paths, along with the I fields that control them. Sections with detailed descriptions of the Vdd Vdd C Large IR Large IR Vdd ...
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Si1141/42/ Registers 2 Address Register Name PART_ID 0x00 REV_ID 0x01 SEQ_ID 0x02 INT_CFG 0x03 IRQ_ENABLE 0x04 IRQ_MODE1 0x05 IRQ_MODE2 0x06 HW_KEY 0x07 HW_KEY MEAS_RATE 0x08 ALS_RATE 0x09 PS_RATE 0x0A ALS_LOW_TH 0x0B Reserved 0x0C ...
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Table 15 Address Register Name IRQ_STATUS 0x21 ALS_VIS_DATA 0x22 0 ALS_VIS_DATA 0x23 1 ALS_IR_DATA0 0x24 ALS_IR_DATA1 0x25 PS1_DATA0 0x26 PS1_DATA1 0x27 PS2_DATA0 0x28 PS2_DATA1 0x29 PS3_DATA0 0x2A PS3_DATA1 0x2B AUX_DATA0 0x2C AUX_DATA1 0x2D PARAM_RD 0x2E ...
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... Si1141/42/43 PART_ID @ 0x00 Bit 7 Name Type Reset value = 0100 0001 (Si1141) Reset value = 0100 0010 (Si1142) Reset value = 0100 0011 (Si1143) REV_ID @ 0x1 Bit 7 Name Type Reset value = 0000 0001 SEQ_ID @ 0x02 Bit 7 Name Type Reset value = 0000 1000 Bit Name Sequencer Revision ...
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INT_CFG @ 0x03 Bit 7 Name Type Reset value = 0000 0000 Bit Name 7:2 Reserved Reserved. 1 INT_MODE Interrupt Mode. The INT_MODE describes how the bits in the IRQ_STATUS Registers are cleared. 0: The IRQ_STATUS Register bits are set ...
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Si1141/42/43 IRQ_ENABLE @ 0x04 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:6 Reserved Reserved. 5 CMD_IE Command Interrupt Enable. Enables interrupts based on COMMAND/RESPONSE activity. 0: INT never asserts due to COMMAND/RESPONSE interface activity. 1: ...
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IRQ_MODE1 @ 0x05 Bit 7 6 PS2_IM Name RW Type Reset value = 0000 0000 Bit Name 7:6 PS2_IM PS2 Interrupt Mode applies only when PS2_IE is also set. 00: PS2_INT is set whenever a PS2 measurement has completed. 01: ...
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Si1141/42/43 IRQ_MODE2 @ 0x06 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:4 Reserved Reserved. 3:2 CMD_IM Command Interrupt Mode applies only when CMD_IE is also set. 00: CMD_INT is set whenever the RESPONSE register is ...
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MEAS_RATE @ 0x08 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 MEAS_RATE MEAS_RATE is an 8-bit compressed value representing a 16-bit integer. The uncompressed 16-bit value, when multiplied by 31.25 us, represents the time dura- ...
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Si1141/42/43 PS_RATE @ 0x0A Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 PS_RATE PS_RATE is an 8-bit compressed value representing a 16-bit multiplier. This multiplier, in conjunction with the MEAS_RATE time, represents how often PS ...
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ALS_HI_TH @ 0x0D Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 ALS_HI_TH ALS_HI_TH is an 8-bit compressed value representing a 16-bit threshold value. The uncompressed value represented by ALS_HI_TH (when used in conjunction with uncompressed ...
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Si1141/42/43 PS_LED21 @ 0x0F Bit 7 6 Name LED2_I Type Reset value = 0000 0000 Bit Name 7:4 LED2_I LED2_I Represents the irLED current sunk by the LED2 pin during a PS measurement. On the Si1141, these bits must be ...
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... Reserved Reserved. 3:0 LED3_I LED3_I Represents the irLED current sunk by the LED3 pin during a PS measure- ment. See PS_LED21 Register for additional details. On the Si1141 and Si1142, these bits must be set to zero. PS1_TH @ 0x11 Bit 7 6 Name Type Reset value = 0000 0000 ...
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Si1141/42/43 PS3_TH @ 0x15 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 PS3_TH PS3_TH is an 8-bit compressed value representing a 16-bit threshold value. The uncompressed value represented by PS3_TH is compared to PS3 measurements ...
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RESPONSE @ 0x20 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 RESPONSE The Response register is used in conjunction with command processing. When an error is encountered, the response register will be loaded with an ...
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Si1141/42/43 IRQ_STATUS @ 0x21 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:6 Reserved Reserved. 5 CMD_INT Command Interrupt Status. 4 PS3_INT PS3 Interrupt Status. 3 PS2_INT PS3 Interrupt Status. 2 PS1_INT PS1 Interrupt Status. 1:0 ...
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ALS_VIS_DATA1 @ 0x23 Bit 7 Name Type Reset value = 0000 0000 Bit Name 7:0 ALS_VIS_DATA1 ALS VIS Data MSB. ALS_IR_DATA0 @ 0x24 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 ALS_IR_DATA0 ALS IR Data ...
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Si1141/42/43 PS1_DATA0 @ 0x26 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 PS1_DATA0 PS1 Data LSB. PS1_DATA1 @ 0x27 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 PS1_DATA1 PS1 Data ...
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PS2_DATA1 @ 0x29 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 PS2_DATA1 PS2 Data MSB. PS3_DATA0 @ 0x2A Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 PS3_DATA0 PS3 Data LSB. ...
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Si1141/42/43 AUX_DATA0 @ 0x2C Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 AUX_DATA0 AUX Data LSB. AUX_DATA1 @ 0x2D Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 AUX_DATA1 AUX Data ...
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CHIP_STAT @ 0x30 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:3 Reserved Reserved 2 RUNNING Device is awake. 1 SUSPEND Device low-power state, waiting for a measurement to complete. 0 SLEEP Device ...
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Si1141/42/43 4.6. Parameter RAM Parameter Name Offset Bit 7 I2C_ADDR 0x00 CHLIST 0x01 — PSLED12_SELECT 0x02 — PSLED3_SELECT 0x03 Reserved 0x04 PS_ENCODING 0x05 — ALS_ENCODING 0x06 PS1_ADCMUX 0x07 PS2_ADCMUX 0x08 PS3_ADCMUX 0x09 PS_ADC_COUNTER 0x0A — PS_ADC_GAIN 0x0B PS_ADC_MISC 0x0C Reserved ...
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Parameter Name Offset Bit 7 Reserved 0x1B LED_REC 0x1C ALS_IR_ADC_COUN 0x1D — TER ALS_IR_ADC_GAIN 0x1E ALS_IR_ADC_MISC 0x1F (always set to 0) Table 16. Parameter RAM Summary Table Bit 6 Bit 5 Bit 4 Reserved (do not modify from default setting ...
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Si1141/42/43 I2C @ 0x00 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 2 7 Address[7:0] Specifies a new I effect when a BUSADDR command is received. CHLIST @ 0x01 Bit 7 6 Name EN_AUX ...
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... Specifies the LED pin driven during the PS1 Measurement. Note that any combina- tion of irLEDs is possible. 000: NO LED DRIVE xx1: LED1 Drive Enabled x1x: LED2 Drive Enabled (Si1142 and Si1143 only. Clear for Si1141) 1xx: LED3 Drive Enabled (Si1143 only. Clear for Si1141 and Si1142 PS2_LED[2:0] ...
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... PS3_LED[2:0] Specifies the LED pin driven during the PS3 Measurement. Note that any combination of irLEDs is possible. 000: No LED drive. xx1: LED1 drive enabled. x1x: LED2 drive enabled (Si1142 and Si1143 only. Clear for Si1141). 1xx: LED3 drive enabled (Si1143 only. Clear for Si1141 and Si1142). PS_ENCODING @ 0x05 Bit 7 6 ...
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ALS_ENCODING @ 0x06 Bit 7 6 Name ALS_IR_ALIGN ALS_VIS_ALIGN Type Reset value = 0000 0000 Bit Name 7:6 Reserved 5 ALS_IR_ALIGN When set, the ADC reports the least significant 16 bits of the 17-bit ADC when performing ALS VIS Measurement. ...
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Si1141/42/43 PS1_ADCMUX @ 0x07 Bit 7 6 Name Type Reset value = 0000 0011 Bit Name 7:0 PS1_ADCMUX[7:0] Selects ADC Input for PS1 Measurement. The following selections are valid when PS_ADC_MODE = 1 (default). This set- ting is for normal ...
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PS2_ADCMUX @ 0x08 Bit 7 6 Name Type Reset value = 0000 0011 Bit Name 7:0 PS2_ADCMUX[7:0] Selects input for PS2 measurement. See PS1_ADCMUX register description for details. PS3_ADCMUX @ 0x09 Bit 7 6 Name Type Reset value = 0000 ...
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Si1141/42/43 PS_ADC_COUNTER @ 0x0A Bit 7 6 Name PS_ADC_REC[2:0] Type RW Reset value = 0000 0000 Bit Name 7 Reserved 6:4 PS_ADC_REC[2:0] Recovery period the ADC takes before making a PS measurement. 000: 1 ADC Clock (50 ns) 001: 7 ...
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PS_ADC_MISC @ 0x0C Bit 7 6 Name Type Reset value = 0000 0100 Bit Name 7:6 Reserved 5 PS_RANGE When performing PS measurements, the ADC can be programmed to operate in high sensitivity operation or high signal range. The high ...
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Si1141/42/43 AUX_ADCMUX @ 0x0F Bit 7 6 Name Type Reset value = 0110 0101 Bit Name 7:0 AUX_ADCMUX[7:0] Selects input for AUX Measurement. These measurements are referenced to GND. 0x65: Temperature (Should be used only for relative temperature measurement. Absolute ...
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ALS_VIS_ADC_GAIN @ 0x11 Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:3 Reserved 2:0 ALS_VIS_ADC_GAIN[2:0] Increases the ADC integration time for ALS Visible measurements by a Note: For A02 and earlier, this parameter also controls ALS-IR ...
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Si1141/42/43 ALS_HYST @ 0x16 Bit 7 6 Name Type Reset value = 0100 1000 Bit Name 7:0 ALS_HYST[7:0] ALS_HYST represents a hysteresis applied to the ALS_LOW_TH and ALS_HIGH_TH thresholds. This 8-bit compressed format, representing a 16-bit value. ...
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ALS_HISTORY @ 0x19 Bit 7 6 Name Type Reset value = 0000 0011 Bit Name 7:0 ALS_HISTORY[7:0] ALS_HISTORY is a bit-field representing the number of consecutive samples exceeding the threshold and hysteresis to change status. For example: 0x03: Two consecutive ...
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Si1141/42/43 LED_REC @ 0x1C Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:0 LED_REC[7:0] Reserved. ALS_IR_ADC_COUNTER @ 0x1D Bit 7 6 Name IR_ADC_REC[2:0] Type Reset value = 0111 0000 Bit Name 7 Reserved 6:4 IR_ADC_REC[2:0] Recovery ...
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ALS_IR_ADC_GAIN @ 0x1E Bit 7 6 Name Type Reset value = 0000 0000 Bit Name 7:3 Reserved 2:0 ALS_IR_ADC_GAIN[2:0] Increases the ADC integration time for IR Ambient measurements by a fac- Note: This parameter available for sequencer revisions A03 or ...
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... V Power DD 4 INT Bidirectional Interrupt Output LED2 Output 2 7 LED3 Output 8 GND Power 9 LED1 Output 10 DNC Notes: 1. Si1142 and Si1143 only. Connect Si1143 only. Connect to in Si1141 and Si1142 DNC 10 SDA 1 9 LED1 GND SCL 2 8 QFN-10 LED3 LED2 INT 4 6 ...
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... Ordering Guide Part Number Si1141-A10-GMR Si1142-A10-GMR Si1143-A10-GMR Si1141/42/43 Package LED Drivers QFN-10 1 QFN-10 2 QFN-10 3 Rev. 1.1 65 ...
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Si1141/42/43 7. Package Outline: 10-Pin QFN Figure 11 illustrates the package details for the Si1141/42/43 QFN package. Table 18 lists the values for the dimensions shown in the illustration. Figure 11. QFN Package Diagram Dimensions Table 18. Package Diagram Dimensions ...
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Pin 1 Small IR Photodiode Visible Photodiode (stacked photodiodes) 0.35 0.59 1.21 Figure 12. Photodiode Centers Rev. 1.1 Si1141/42/43 Large IR Photodiode 0.19 0.70 0.18 67 ...
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... Updated Table 8, Table 9. Updated Pin Assignments. Updated Register maps and description. Revision 0.4 to Revision 0.41 Added Si1141 and Si1142 in addition to Si1143. Added the ODFN-8 package option. Some sections were rearranged. Added the signal-path software-model schematic. ...
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N : OTES Si1141/42/43 Rev. 1.1 69 ...
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