AD7983 Datasheet, PDF (1/24 Pages) Analog Devices – 16-Bit, 1.33 MSPS PulSAR ADC in MSOP/QFN

16-Bit, 1.33 MSPS PulSAR ADC in
MSOP/QFN
AD7983
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
Serial interface SPI-/QSPI™-/MICROWIRE™-/DSP-compatible
Daisy-chain multiple ADCs and busy indicator
10-lead MSOP (MSOP-8 size) and 10-lead 3 mm × 3 mm QFN¹
(LFCSP), SOT-23 size
Wide operating temperature range: −40°C to +85°C
APPLICATIONS
Battery-powered equipment
Communications
ATE
Data acquisitions
Medical instruments
APPLICATION DIAGRAM
2.9V TO 5V 2.5V
0 TO VREF
REF VDD ^VIO
SDI
IN+
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 QFN¹
(LFCSP) with operation specified from −40°C to +85°C.
1 _{QFN package in development. Contact sales for samples and availability.}
Table 1. MSOP, QFN¹ (LFCSP) 14-/16-/18-Bit PulSAR® ADC
Type
100 kSPS
250 kSPS
400 kSPS to 500 kSPS
≥1000 kSPS
ADC Driver
14-Bit
16-Bit
18-Bit
AD7940
AD7680
AD7683
AD7684
AD7942²
AD7685²
AD7687²
AD7694
AD7691²
AD7946²
AD7686²
AD7688²
AD7693²
AD7690²
AD7980²
AD7983²
AD7982²
AD7984²
ADA4941
ADA4841
ADA4941
ADA4841
1 _{QFN package in development. Contact sales for samples and availability.}
2 _{Pin-for-pin compatible.}
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
Fax: [phone]
©2007 Analog Devices, Inc. All rights reserved.