a
16-Bit, 250 kSPS CMOS ADC
AD7663
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Throughput: 250 kSPS
AVDD AGND REF REFGND
DVDD DGND
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
4R
4R
2R
R
IND(4R)
INC(4R)
INB(2R)
INA(R)
AD7663
OVDD
OGND
SERIAL
PORT
SWITCHED
CAP DAC
SER/PAR
BUSY
D[15:0]
CS
INGND
PARALLEL
INTERFACE
16
CLOCK
Parallel (8/16 Bits) and Serial 5 V/3 V Interface
SPI®/QSPI™/MICROWIRE™/DSP Compatible
Single 5 V Supply Operation
PD
RESET
RD
CONTROL LOGIC AND
CALIBRATION CIRCUITRY
OB/2C
Power Dissipation
BYTESWAP
35 mW Typical
15 ꢁW @ 100 SPS
CNVST
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
PulSAR Selection
Type/kSPS
100–250
500–570
800–1000
APPLICATIONS
Data Acquisition
Motor Control
Communication
Instrumentation
Spectrum Analysis
Medical Instruments
Process Control
Pseudo
Differential
AD7660
AD7650
AD7664
True Bipolar
True Differential
18-Bit
AD7663
AD7675
AD7678
AD7665
AD7676
AD7679
AD7654
AD7671
AD7677
AD7674
AD7655
Simultaneous/
Multichannel
GENERAL DESCRIPTION
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.
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.
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 consumes 7 µW maximum when in power-down.
3. Superior INL
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.
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
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may result from its use. No license is granted by implication or otherwise
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