AD7994BRUZ-0 Analog Devices Inc, AD7994BRUZ-0 Datasheet
AD7994BRUZ-0
Specifications of AD7994BRUZ-0
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AD7994BRUZ-0 Summary of contents
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FEATURES 10- and 12-bit ADC with fast conversion time: 2 µs typ 4 single-ended analog input channels Specified for Low power consumption Fast throughput rate: 188 kSPS Temperature range:−40°C to +125°C Sequencer ...
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AD7993/AD7994 TABLE OF CONTENTS AD7993 Specifications..................................................................... 3 AD7994 Specifications..................................................................... Timing Specifications ................................................................ 7 Absolute Maximum Ratings............................................................ 9 ESD Caution.................................................................................. 9 Pin Configuration and Pin Function Descriptions.................... 10 Terminology .................................................................................... 11 Typical Performance Characteristics ........................................... 12 Circuit ...
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AD7993 SPECIFICATIONS Temperature range for B version is −40°C to +125°C. Unless otherwise noted, V all specifications apply for 400 kHz. For the AD7993-1, all specs apply for f SCL MIN ...
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AD7993/AD7994 Parameter LOGIC INPUTS (CONVST) Input High Voltage, V INH Input Low Voltage, V INL Input Leakage Current Input Capacitance LOGIC OUTPUTS (OPEN-DRAIN) Output Low Voltage Floating-State Leakage Current 3 Floating-State Output Capacitance ...
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AD7994 SPECIFICATIONS Temperature range for B version is −40°C to +125°C. Unless otherwise noted, V all specifications apply for 400 kHz. For the AD7994-1, all specs apply for f SCL MIN ...
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AD7993/AD7994 Parameter LOGIC INPUTS (CONVST) Input High Voltage, V INH Input Low Voltage, V INL Input Leakage Current Input Capacitance LOGIC OUTPUTS (OPEN-DRAIN) Output Low Voltage Floating-State Leakage Current 3 Floating-State Output Capacitance ...
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I C TIMING SPECIFICATIONS Guaranteed by initial characterization. All values measured with input filtering enabled and tf measured between 0.3 V and 0 High speed mode timing specifications apply to the AD7993-1/AD7994-1 only. Standard and ...
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AD7993/AD7994 Parameter Conditions t Standard mode 10 Fast mode High speed mode C = 100 pF max 400 pF max B t Standard mode 11 Fast mode High speed mode C = 100 pF max B C ...
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ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 4. Parameter V to GND DD Analog Input Voltage to GND Reference Input Voltage to GND Digital Input Voltage to GND Digital Output Voltage to GND Input Current to ...
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AD7993/AD7994 PIN CONFIGURATION AND PIN FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Function AGND Analog Ground. Ground reference point for all circuitry on the AD7993/AD7994. All analog input signals should be referred ...
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TERMINOLOGY Signal-to-Noise and Distortion Ratio (SINAD) The measured ratio of signal-to-noise and distortion at the out- put of the A/D converter. The signal is the rms amplitude of the fundamental. Noise is the sum of all nonfundamental signals up to ...
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AD7993/AD7994 TYPICAL PERFORMANCE CHARACTERISTICS 0 –20 –40 –60 –80 –100 –120 FREQUENCY (kHz) Figure 4. AD7994 Dynamic Performance with 5 V Supply and 2.5 V Reference, 121 kSPS, Mode 1 –10 –30 –50 –70 –90 –110 0 ...
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CODE Figure 10. Typical INL 2.7 V, Mode 1, 3.4 MHz f DD 1.0 0.8 0.6 0.4 0.2 0 –0.2 ...
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AD7993/AD7994 2.0 TEMPERATURE = +85°C 1.8 TEMPERATURE = +25°C TEMPERATURE = –40°C 1.6 TEMPERATURE = +85°C TEMPERATURE = +25°C MODE 2 - 147kSPS 1.4 TEMPERATURE = –40°C 1.2 1.0 MODE 1 - 121kSPS 0.8 0.6 0.4 0.2 0 2.7 3.2 ...
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CIRCUIT INFORMATION The AD7993/AD7994 are low power, 10- and 12-bit, single- supply, 4-channel A/D converters, respectively. The parts can be operated from a 2 5.5 V supply. The AD7993/AD7994 provide the user with a 4-channel multiplexer, an on-chip ...
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AD7993/AD7994 TYPICAL CONNECTION DIAGRAM Figure 22 shows the typical connection diagram for the AD7993/ AD7994. In Figure 22 the address select pin (AS) is tied to V however, AS can also be tied to AGND or left floating, allowing the ...
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For ac applications, removing high frequency components from the analog input signal is recommended by use band- pass filter on the relevant analog input pin. In applications where harmonic distortion and signal-to-noise ratio are critical, the analog ...
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AD7993/AD7994 INTERNAL REGISTER STRUCTURE The AD7993/AD7994 contain 17 internal registers (see Figure 25) that are used to store conversion results, high and low conversion limits, and information to configure and control the device. Sixteen are data registers and one is ...
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CONFIGURATION REGISTER The configuration register is an 8-bit read/write register that is used to set the operating modes of the AD7993/AD7994. The bit functions are outlined in Table 9. A single-byte write is necessary when writing to the configuration register. ...
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AD7993/AD7994 CONVERSION RESULT REGISTER The conversion result register is a 16-bit read-only register that stores the conversion result from the ADC in straight binary format. A 2-byte read is necessary to read data from this register. Table 13 shows the ...
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Hysteresis Register (CH1/CH2/CH3/CH4) Each hysteresis register is a 16-bit read/write register, of which only the 12 LSBs of the register are used. The hysteresis register stores the hysteresis value, N, when using the limit registers. Each pair of limit registers ...
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AD7993/AD7994 CYCLE TIMER REGISTER The cycle timer register is an 8-bit read/write register that stores the conversion interval value for the automatic cycle interval mode of the AD7993/AD7994 (see the Modes of Operation section the cycle ...
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SERIAL INTERFACE Control of the AD7993/AD7994 is carried out via the I compatible serial bus. The AD7993/AD7994 is connected to this bus as a slave device under the control of a master device, for example, the processor. SERIAL BUS ADDRESS ...
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AD7993/AD7994 WRITING TO THE AD7993/AD7994 Depending on the register being written to, there are three different writes for the AD7993/AD7994. WRITING TO THE ADDRESS POINTER REGISTER FOR A SUBSEQUENT READ In order to read from a particular register, the address ...
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SCL SDA START BY MASTER SERIAL BUS ADDRESS BYTE 9 1 SCL (CONTINUED) SDA (CONTINUED MOST SIGNIFICANT DATA BYTE R ACK. BY AD7993/AD7994 FRAME ...
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AD7993/AD7994 READING DATA FROM THE AD7993/AD7994 Reading data from the AD7993/AD7994 is a 1-byte or 2-byte operation. Reading back the contents of the alert status register or the cycle timer register is a single-byte read operation, as shown in Figure ...
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ALERT/BUSY PIN The ALERT/BUSY pin may be configured as an alert output or busy output, as shown in Table 12. SMBus ALERT The AD7993/AD7994 alert output is an SMBus interrupt line for devices that want to trade their ability to ...
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AD7993/AD7994 MODES OF OPERATION When supplies are first applied to the AD7993/AD7994, the ADC powers up in shutdown mode and normally remains in this shutdown state while not converting. There are three different methods of initiating a conversion on the ...
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MODE 2—COMMAND MODE This mode allows a conversion to be automatically initiated any time a write operation occurs. In order to use this mode, Command Bits the address pointer byte, shown in Table 7, must be ...
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AD7993/AD7994 1 SCL SDA 7-BIT ADDRESS S 1 SCL SDA Sr 7-BIT ADDRESS SCL SDA 7-BIT ADDRESS ACK BY AD7993/AD7994 SCL SDA Sr 7-BIT ADDRESS R A ACK BY AD7993/AD7994 ...
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... AD7993BRUZ-1REEL –40°C to +125°C AD7994BRU-0 –40°C to +125°C AD7994BRU-0REEL –40°C to +125°C AD7994BRUZ-0 3 –40°C to +125°C 3 AD7994BRUZ-0REEL –40°C to +125°C AD7994BRU-1 –40°C to +125°C AD7994BRU-1REEL –40°C to +125°C 3 AD7994BRUZ-1 –40°C to +125°C 3 AD7994BRUZ-1REEL – ...
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AD7993/AD7994 NOTES 2 Purchase of licensed I C components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I Rights to use these components system, ...