Datasheet AD7983 (Analog Devices)

16-Bit, 1.33 MSPS PulSAR ADC in MSOP/QFN Data Sheet AD7983 FEATURES APPLICATION DIAGRAM 16-bit resolution with no missing codes 2.9V TO 5V 2.5V Throughput: 1.33 MSPS Low power dissipation: 10.5 mW typical @ 1.33 MSPS INL: ±0.6 LSB typical, ±1.0 LSB maximum REF VDD VIO 1.8V TO 5V SINAD: 91.6 dB @ 10 kHz 0 TO VREF SDI IN+ THD: −115 dB @ 10 kHz AD7983 SCK 3- OR 4-WIRE INTERFACE IN– (SPI, DAISY CHAIN, CS) Pseudo differential analog input range SDO GND CNV
1
0 V to V
00
REF with VREF between 2.9 V to 5.5 V
4- 97
Any input range and easy to drive with the ADA4841
06 Figure 1.
No pipeline delay Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic GENERAL DESCRIPTION interface
The AD7983 is a 16-bit, successive approximation, analog-to-
Proprietary serial interface SPI-/QSPI™-/MICROWIRE™-/DSP-
digital converter (ADC) that operates from a single power
compatible1
supply, VDD. It contains a low power, high speed, 16-bit
Daisy-chain multiple ADCs and busy indicator
sampling ADC and a versatile serial interface port. On the CNV
10-lead MSOP (MSOP-8 size) and 10-lead 3 mm × 3 mm QFN
rising edge, it samples an analog input IN+ between 0 V to REF
(LFCSP), SOT-23 size
with respect to a ground sense IN−. The reference voltage, REF,
Wide operating temperature range: −40°C to +85°C
is applied externally and can be set independent of the supply voltage, VDD. Its power scales linearly with throughput.
APPLICATIONS
The SPI-compatible serial interface also features the ability,
Battery-powered equipment
using the SDI input, to daisy-chain several ADCs on a single,
Communications
3-wire bus and provides an optional busy indicator. It is
ATE
compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate
Data acquisitions
supply VIO.
Medical instruments
The AD7983 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C. 1 Protected by U.S. Patent 6,703,961.
Table 1. MSOP, QFN (LFCSP) 14-/16-/18-Bit PulSAR® ADC Type 100 kSPS 250 kSPS 400 kSPS to 500 kSPS ≥1000 kSPS ADC Driver
14-Bit AD7940 AD79421 AD79461 16-Bit AD7680 AD76851 AD76861 AD79801 ADA4941 AD7683 AD76871 AD76881 AD79831 ADA4841 AD7684 AD7694 AD76931 AD7988-1 AD7988-5 18-Bit AD7989-1 AD76911 AD76901 AD79821 ADA4941 AD7989-5 AD79841 ADA4841 1 Pin-for-pin compatible.
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Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Inputs Driver Amplifier Choice Voltage Reference Input Power Supply Digital Interface CS MODE, 3-Wire Without Busy Indicator CS Mode, 3-Wire with Busy Indicator CS Mode, 4-Wire Without Busy Indicator CS Mode, 4-Wire with Busy Indicator Chain Mode Without Busy Indicator Chain Mode with Busy Indicator Application Hints Layout Evaluating the Performance of the AD7983 Outline Dimensions Ordering Guide