AD7992BRMZ-1 Analog Devices Inc, AD7992BRMZ-1 Datasheet
AD7992BRMZ-1
Specifications of AD7992BRMZ-1
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AD7992BRMZ-1 Summary of contents
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FEATURES 12-bit ADC with fast conversion time: 2 µs typ 2 single-ended analog input channels Specified for Low power consumption Fast throughput rate 188 kSPS Sequencer operation Temperature range: −40 ...
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AD7992 TABLE OF CONTENTS Specifications..................................................................................... Timing Specifications ................................................................ 5 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. 7 Pin Configuration and Pin Function Descriptions...................... 8 Terminology ...................................................................................... 9 Typical Performance Characteristics ........................................... 10 Circuit Information ........................................................................ 13 Converter ...
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SPECIFICATIONS Temperature range for B version is −40°C to +125°C. Unless otherwise noted, V AD7992-0, all specifications apply for f SCL specifications are for both single-channel mode and dual-channel mode, Unless otherwise noted; T Table 2. Parameter 1 DYNAMIC PERFORMANCE ...
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AD7992 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 ...
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I C TIMING SPECIFICATIONS Guaranteed by initial characterization. All values measured with the input filtering enabled. C line. t and t measured between 0 High speed mode timing specifications apply to the AD7992-1 only. Standard ...
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AD7992 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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AD7992 PIN CONFIGURATION AND PIN FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Function 2, 7 AGND Analog Ground. Ground reference point for all circuitry on the AD7992. All analog input signals should be referred to this GND ...
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TERMINOLOGY Signal-to-Noise and Distortion Ratio (SINAD) The measured ratio of signal-to-noise and distortion at the output of the A/D converter. The signal is the rms amplitude of the fundamental. Noise is the sum of all nonfundamental signals up to half ...
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AD7992 TYPICAL PERFORMANCE CHARACTERISTICS 0 –20 –40 –60 –80 –100 –120 FREQUENCY (kHz) Figure 4. Dynamic Performance with 5 V Supply and 2.5 V Reference, 121 kSPS, Mode 1, Single-Channel Mode 0 –20 –40 –60 –80 –100 ...
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CODE Figure 10. Typical INL 2.7 V, Reference = 2.5 V, Mode1, DD 3.4 MHz f , 121 kSPS SCL 1.0 ...
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AD7992 12.0 11.8 ENOB 11.6 11.4 11.2 SINAD 11.0 10.8 10.6 10.4 1.200 2.048 2.500 2.700 3.000 3.300 4.096 4.500 5.000 REFERENCE VOLTAGE (V) Figure 16. ENOB/SINAD vs. Reference Voltage, Mode 1, ...
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CIRCUIT INFORMATION The AD7992 is a low power, 12-bit, single-supply, 2-channel analog-to-digital converter (ADC). The part can be operated from a 2 5.5 V supply. The AD7992 provides the user with a 2-channel multiplexer, an on-chip track-and-hold, an ...
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AD7992 TYPICAL CONNECTION DIAGRAM Figure 21 shows the typical connection diagram for the AD7992. In Figure 21, the address select pin (AS) is tied to V however AS can also be tied to AGND or left floating, allowing the user ...
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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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AD7992 INTERNAL REGISTER STRUCTURE The AD7992 contains 11 internal registers (see Figure 24) that are used to store conversion results, high and low conversion limits, and information to configure and control the device. There are ten data registers and one ...
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CONFIGURATION REGISTER The configuration register is a 8-bit, read/write register that is used to set the operating modes of the AD7992. The MSB of the register is unused and is a don’t care bit. The bit functions of the configuration ...
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AD7992 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 needed to read data from this register. Table 12 shows the ...
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Using the Limit Registers to Store Min/Max Conversion Results If full scale—that is, all 1s—is written to the hysteresis register for a particular channel, the DATA and DATA HIGH for that channel no longer act as limit registers as previously ...
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AD7992 SERIAL INTERFACE Control of the AD7992 is carried out via the I serial bus. The AD7992 is connected to this bus as a slave device under the control of a master device, such as the processor. SERIAL BUS ADDRESS ...
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WRITING TO THE AD7992 Depending on the register being written to, there are three different writes for the AD7992. WRITING TO THE ADDRESS POINTER REGISTER FOR A SUBSEQUENT READ In order to read from a particular register, the address pointer ...
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AD7992 WRITING TWO BYTES OF DATA TO A LIMIT REGISTER OR HYSTERESIS REGISTER Each of the limit registers and hysteresis registers are 12-bit registers, so two bytes of data are required to write a value to any one of them. ...
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READING DATA FROM THE AD7992 Reading data from the AD7992 2-byte operation. Reading back the contents of the alert status register, the config- uration register, or the cycle timer register is a single-byte read operation, as ...
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AD7992 ALERT/BUSY PIN The ALERT/BUSY pin may be configured as an ALERT output or BUSY output, as shown in Table 11. SMBus ALERT The AD7992 ALERT output is an SMBus interrupt line for devices that want to trade their ability ...
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MODES OF OPERATION When supplies are first applied to the AD7992, the ADC powers up in sleep mode and normally remains in this shutdown state while not converting. There are three different methods of initiating a conversion on the AD7992. ...
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AD7992 MODE 2 – COMMAND MODE Mode 2 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 ...
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SCL SDA 7-BIT ADDRESS ACK BY AD7992 SCL SDA Sr 7-BIT ADDRESS R A ACK BY AD7992 MODE 3—AUTOMATIC CYCLE MODE An automatic conversion cycle can be selected and enabled ...
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... AD7992BRM-1 –40°C to +125°C AD7992BRM-1REEL –40°C to +125°C 3 AD7992BRMZ-1 –40°C to +125°C 3 AD7992BRMZ-1REEL –40°C to +125°C EVAL-AD7992CB 1 2 The AD7992-0 supports standard and fast I C interface modes. The AD7992-1 supports standard, fast, and high speed I 2 Linearity error here refers to integral nonlinearity. ...