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AD7623 Datasheet(PDF) 1 Page - Analog Devices

Part # AD7623
Description  16-Bit, 1.33 MSPS PulSAR
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7623 Datasheet(HTML) 1 Page - Analog Devices

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16-Bit, 1.33 MSPS PulSAR® ADC
AD7623
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: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.
FEATURES
Throughput: 1.33 MSPS
2.048 V internal reference
Differential input range: ±VREF (VREF up to 2.5 V)
INL: ±1 LSB typical
16-bit resolution with no missing codes
SINAD: 88 dB typical @ 100 kHz
THD: −97 dB typical @ 100 kHz
No pipeline delay (SAR architecture)
Parallel (16- or 8-bit bus) and serial 5 V/3.3 V/2.5 V interface
SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible
2.5 V single-supply operation
Power dissipation: 45 mW typical @ 1.33 MSPS
48-lead LQFP and LFCSP_VQ packages
Speed upgrade of the AD7677
APPLICATIONS
Medical instruments
High speed data acquisition
Digital signal processing
Communications
Instrumentation
Spectrum analysis
ATE
FUNCTIONAL BLOCK DIAGRAM
16
CONTROL LOGIC AND
CALIBRATION CIRCUITRY
CLOCK
AD7623
DGND
DVDD
AVDD
AGND
REF REFGND
IN+
IN–
PD
RESET
CNVST
PDBUF
REFBUFIN
PDREF
REF
TEMP
D[15:0]
BUSY
RD
CS
OB/2C
OGND
OVDD
BYTESWAP
SER/PAR
REF AMP
SERIAL
PORT
PARALLEL
INTERFACE
SWITCHED
CAP DAC
Figure 1.
Table 1. PulSAR Selection
Type/kSPS
100 to 250
500 to 570
800 to
1000
>1000
Pseudo
Differential
AD7651
AD7660/61
AD7650/52
AD7664/66
AD7653
AD7667
True Bipolar
AD7663
AD7665
AD7671
True
Differential
AD7675
AD7676
AD7677
AD7621
AD7623
18-Bit
AD7678
AD7679
AD7674
AD7641
Multichannel/
Simultaneous
AD7654
AD7655
GENERAL DESCRIPTION
The AD7623 is a 16-bit, 1.33 MSPS, charge redistribution SAR,
fully differential analog-to-digital converter (ADC) that
operates from a single 2.5 V power supply. It contains a high
speed 16-bit sampling ADC, an internal conversion clock, an
internal reference (and buffer), error correction circuits, and
both serial and parallel system interface ports. Power consump-
tion is automatically scaled with throughput, making it ideal
for battery-powered applications. It is available in 48-lead, low
profile quad flat package (LQFP) and a lead frame chip-scale
(LFCSP_VQ) package. Operation is specified from
−40°C to +85°C.
PRODUCT HIGHLIGHTS
1.
Fast Throughput.
The AD7623 is a 1.33 MSPS, charge redistribution,
16-bit SAR ADC.
2.
Superior Linearity.
The AD7623 has no missing 16-bit code.
3.
Internal Reference.
The AD7623 has a 2.048 V internal reference with a
typical drift of ±7 ppm/°C.
4.
Single-Supply Operation.
The AD7623 operates from a 2.5 V single supply and
typically dissipates 45 mW. Its power dissipation decreases
with the throughput.
5.
Serial or Parallel Interface.
Versatile parallel (16- or 8-bit bus) or 2-wire serial interface
arrangement compatible with 2.5 V, 3.3 V, or 5 V logic.


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