a
FEATURES
Throughput: 250 kSPS
INL: 3 LSB Max ( 0.0046% of Full Scale)
16-Bit Resolution with No Missing Codes
S/(N+D): 90 dB Typ @ 100 kHz
THD: –100 dB Typ @ 100 kHz
Analog Input Voltage Ranges
Bipolar: 10 V, 5 V, 2.5 V
Unipolar: 0 V to 10 V, 0 V to 5 V, 0 V to 2.5 V
Both AC and DC Specifications
No Pipeline Delay
Parallel (8/16 Bits) and Serial 5 V/3 V Interface
SPI
®
/QSPI™/MICROWIRE™/DSP Compatible
Single 5 V Supply Operation
Power Dissipation
35 mW Typical
15 W @ 100 SPS
Power-Down Mode: 7 W Max
Package: 48-Lead Quad Flatpack (LQFP)
Package: 48-Lead Chip Scale (LFCSP)
Pin-to-Pin Compatible with the AD7660/AD7664/AD7665
APPLICATIONS
Data Acquisition
Motor Control
Communication
Instrumentation
Spectrum Analysis
Medical Instruments
Process Control
GENERAL DESCRIPTION
IND(4R)
INC(4R)
INB(2R)
INA(R)
INGND
16-Bit, 250 kSPS CMOS ADC
FUNCTIONAL BLOCK DIAGRAM
AVDD AGND REF REFGND
4R
4R
2R
R
SWITCHED
CAP DAC
PARALLEL 16
INTERFACE
PD
RESET
CLOCK
CONTROL LOGIC AND
CALIBRATION CIRCUITRY
DVDD
DGND
SERIAL
PORT
OVDD
OGND
SER/PAR
BUSY
D[15:0]
CS
RD
OB/2C
BYTESWAP
CNVST
PulSAR Selection
Type/kSPS
Pseudo
Differential
True Bipolar
True Differential
18-Bit
Simultaneous/
Multichannel
100–250
AD7660
AD7675
AD7678
500–570
AD7650
AD7664
AD7665
AD7676
AD7679
AD7654
800–1000
AD7671
AD7677
AD7674
AD7655
The AD7663 is a 16-bit, 250 kSPS, charge redistribution SAR,
analog-to-digital converter that operates from a single 5 V power
supply. It contains a high speed 16-bit sampling ADC, a resistor
input scaler that allows various input ranges, an internal conver-
sion clock, error correction circuits, and both serial and parallel
system interface ports.
The AD7663 is hardware factory-calibrated and is comprehen-
sively tested to ensure such ac parameters as signal-to-noise ratio
(SNR) and total harmonic distortion (THD), in addition to the
more traditional dc parameters of gain, offset, and linearity.
It is fabricated using Analog Devices’ high performance, 0.6 micron
CMOS process and is available in a 48-lead LQFP and a tiny
48-lead LFCSP with operation specified from –40°C to +85°C.
PRODUCT HIGHLIGHTS
1. Fast Throughput
The AD7663 is a 250 kSPS charge redistribution, 16-bit
SAR ADC with various bipolar and unipolar input ranges.
2. Single-Supply Operation
The AD7663 operates from a single 5 V supply and dissipates
only 35 mW typical. Its power dissipation decreases with
the throughput to, for instance, only 15 µW at a 100 SPS
throughput.
It consumes 7 µW maximum when in power-down.
3. Superior INL
The AD7663 has a maximum integral nonlinearity of 3 LSB
with no missing 16-bit code.
4. Serial or Parallel Interface
Versatile parallel (8 bits or 16 bits) or 2-wire serial interface
arrangement compatible with both 3 V or 5 V logic.
REV. B
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. 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 companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
© 2003 Analog Devices, Inc. All rights reserved.
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