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AD7982 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD7982
Description  16-Bit, 100 kSPS PulSAR, Differential ADC in MSOP
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD7982 Datasheet(HTML) 1 Page - Analog Devices

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16-Bit, 100 kSPS PulSAR,
Differential ADC in MSOP
AD7684
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2004–2007 Analog Devices, Inc. All rights reserved.
FEATURES
16-bit resolution with no missing codes
Throughput: 100 kSPS
INL: ±1 LSB typical, ±3 LSB maximum
True differential analog input range: ±VREF
0 V to VREF with VREF up to VDD on both inputs
Single-supply operation: 2.7 V to 5.5 V
Serial interface SPI®-/QSPI-™/MICROWIRE-™/DSP-compatible
Power dissipation
4 mW @ 5 V
1.5 mW @ 2.7 V
150 μW @ 2.7 V/10 kSPS
Standby current: 1 nA
8-lead MSOP package
APPLICATIONS
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process control
APPLICATION DIAGRAM
AD7684
REF
GND
VDD
+IN
–IN
DCLOCK
DOUT
CS
3-WIRE SPI
INTERFACE
0.5V TO VDD 2.7V TO 5.5V
0
VREF
0
VREF
Figure 1.
Table 1. MSOP, QFN (LFCSP)/SOT-23
14-/16-/18-Bit PulSAR ADC
Type
100
kSPS
250
kSPS
400 kSPS
to
500 kSPS
≥ 1000
kSPS
ADC
Driver
18-Bit True
AD7691
AD7690
AD7982
ADA4941
Differential
AD7984
ADA4841
16-Bit True
AD7684
AD7687
AD7688
ADA4941
Differential
AD7693
ADA4841
16-Bit Pseudo
AD7680
AD7685
AD7686
AD7980
ADA4841
Differential
AD7683
AD7694
14-Bit Pseudo
Differential
AD7940
AD7942
AD7946
ADA4841
GENERAL DESCRIPTION
The AD7684 is a 16-bit, charge redistribution, successive
approximation, PulSAR® analog-to-digital converter (ADC)
that operates from a single power supply, VDD, between 2.7 V
to 5.5 V. It contains a low power, high speed, 16-bit sampling
ADC with no missing codes, an internal conversion clock, and a
serial, SPI-compatible interface port. The part also contains a low
noise, wide bandwidth, short aperture delay, track-and-hold circuit.
On the CS falling edge, it samples the voltage difference
between +IN and –IN pins. The reference voltage, REF, is
applied externally and can be set up to the supply voltage. Its
power scales linearly with throughput.
The AD7684 is housed in an 8-lead MSOP, with an operating
temperature specified from −40°C to +85°C.


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