AD7983_15 Datasheet, PDF (1/24 Pages) Analog Devices – 16-Bit, 1.33 MSPS PulSAR ADC in MSOP/QFN

Data Sheet
FEATURES
16-bit resolution with no missing codes
Throughput: 1.33 MSPS
Low power dissipation: 10.5 mW typical @ 1.33 MSPS
INL: ±0.6 LSB typical, ±1.0 LSB maximum
SINAD: 91.6 dB @ 10 kHz
THD: −115 dB @ 10 kHz
Pseudo differential analog input range
0 V to VREF with VREF between 2.9 V to 5.5 V
Any input range and easy to drive with the ADA4841
No pipeline delay
Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic
interface
Proprietary serial interface SPI-/QSPI™-/MICROWIRE™-/DSP-
compatible¹
Daisy-chain multiple ADCs and busy indicator
10-lead MSOP (MSOP-8 size) and 10-lead 3 mm × 3 mm QFN
(LFCSP), SOT-23 size
Wide operating temperature range: −40°C to +85°C
APPLICATIONS
Battery-powered equipment
Communications
ATE
Data acquisitions
Medical instruments
16-Bit, 1.33 MSPS PulSAR ADC in
MSOP/QFN
AD7983
APPLICATION DIAGRAM
2.9V TO 5V 2.5V
0 TO VREF
REF VDD ^VIO
IN+
SDI
AD7983 ^SCK
IN–
SDO
GND
CNV
1.8V TO 5V
3- OR 4-WIRE INTERFACE
(SPI, DAISY CHAIN, CS)
Figure 1.
GENERAL DESCRIPTION
The AD7983 is a 16-bit, successive approximation, analog-to-
digital converter (ADC) that operates from a single power
supply, VDD. It contains a low power, high speed, 16-bit
sampling ADC and a versatile serial interface port. On the CNV
rising edge, it samples an analog input IN+ between 0 V to 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. Its 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 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
14-Bit
AD7940
AD7942¹
AD7946¹
16-Bit
AD7680
AD7685¹
AD7686¹
AD7683
AD7687¹
AD7688¹
AD7684
AD7694
AD7693¹
AD7988-1
AD7988-5
18-Bit
AD7989-1
AD7691¹
AD7690¹
AD7989-5
1 _{Pin-for-pin compatible.}
≥1000 kSPS
AD7980¹
AD7983¹
AD7982¹
AD7984¹
ADC Driver
ADA4941
ADA4841
ADA4941
ADA4841
Rev. B
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