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Analog Devices - 16-Bit - 100 kSPS PulSAR Differential ADC in MSOP

Numéro de référence AD7684
Description 16-Bit - 100 kSPS PulSAR Differential ADC in MSOP
Fabricant Analog Devices 
Logo Analog Devices 





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AD7684 fiche technique
FEATURES
16-bit resolution with no missing codes
Throughput: 100 kSPS
INL: ±1 LSB typ, ±3 LSB max
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
GENERAL DESCRIPTION
The AD7684 is a 16-bit, charge redistribution, successive
approximation, PulSARanalog-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
16-Bit, 100 kSPS PulSAR
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Differential ADC in MSOP
AD7684
APPLICATION DIAGRAM
VREF
0
VREF
0
0.5V TO VDD 2.7V TO 5.5V
REF
VDD
+IN DCLOCK
–IN AD7684 DOUT
GND
CS
Figure 1.
3-WIRE SPI
INTERFACE
Table 1. MSOP, QFN (LFCSP)/SOT-23, 16-Bit PulSAR ADCs
Type
100 kSPS 250 kSPS 500 kSPS
True Differential
AD7684 AD7687 AD7688
Pseudo
AD7683
Differential/Unipolar
AD7685
AD7694
AD7686
Unipolar
AD7680
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 package, with an
operating temperature specified from −40°C to +85°C.
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: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.

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