Datasheet Analog Devices AD7981

High Temperature, 16-Bit,
600 kSPS PulSAR ADC
AD7981 Data Sheet TYPICAL APPLICATION CIRCUIT Extreme high temperature operation
Specified temperature range
−55°C to +210°C (10-lead FLATPACK)
−55°C to +175°C (10-Lead MSOP)
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: −102 dB typical at 1 kHz input frequency
INL: ±2.5 LSB maximum, DNL: ±0.9 LSB maximum
Low power
2.25 mW typical at 600 kSPS (VDD only)
4.65 mW typical at 600 kSPS (total)
75 µW typical at 10 kSPS
Small footprint
10-lead, 3 mm × 3 mm, monometallic wire bonding MSOP
10-lead, 0.255 mm × 0.255 mm, monometallic wire
bonding FLATPACK
Pseudo differential analog input range
0 V to VREF with VREF between 2.4 V and 5.1 V
Single-supply 2.5 V operation with 1.8 V to 5 V logic interface …

High Temperature, 16-Bit,
600 kSPS PulSAR® ADC
AD7981-KGD Known Good Die
FEATURES FUNCTIONAL BLOCK DIAGRAM
2.5V TO 5.0V 2.5V 0V TO VREF REF VDD
IN+
IN– AD7981-KGD
GND VIO 1.8V TO 5.0V SDI
SCK
SDO 3-OR 4-WIRE INTERFACE
(SPI, DAISY CHAIN, CS) CNV Figure 1. APPLICATIONS
Downhole drilling and instrumentation
Avionics
Heavy industrial
High temperature environments GENERAL DESCRIPTION
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). …