Series Information for AD7981HRMZ - Analog Devices
Features
Extreme high temperature operation
Specified temperature range: u221255u00b0C to +175u00b0C
High performance
16-bit resolution with no missing codes
600 kSPS throughput with no latency/pipeline delay
SNR: 91 dB typical at 1 kHz input frequency
THD: u2212102 dB typical at 1 kHz input frequency
INL: u00b12.0 LSB maximum, DNL: u00b10.9 LSB maximum
Low power dissipation
2.25 mW typical at 600 kSPS (VDD only)
4.65 mW typical at 600 kSPS (total)
70 u03bcW typical at 10 kSPS
Pseudo differential analog input range
0 V to VREF with VREF between 2.4 V and 5.1 V
Easy to use
Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic
The AD7981-KGD1 is a 16-bit, successive approximation, analog-to-digital converter (ADC) designed for high temperature operation. The AD7981-KGD is capable of sample rates up to 600 kSPS while maintaining low power consumption from a single power supply, VDD. It is a fast throughput, high accuracy, high temperature, successive approximation register (SAR) ADC and packaged in a small form factor with a versatile serial port interface (SPI). On the CNV rising edge, the AD7981-KGD samples an analog input, IN+, between 0 V and REF with respect to a ground sense, IN−. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD. The device power scales linearly with throughput. The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single, 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO. The AD7981-KGD is a member of a growing series of high temperature qualified products offered by Analog Devices, Inc. For a complete selection of available high temperature products, see the high temperature product list and qualification data available at www.analog.com/hightemp. Additional application and technical information can be found in the AD7981 data sheet.
