參數(shù)資料
型號(hào)： AD7675
廠商： Analog Devices, Inc.
英文描述： 16-Bit, 100 kSPS, Differential ADC
中文描述： 16位，100 kSPS的，差分ADC
文件頁(yè)數(shù)： 1/20頁(yè)
文件大小： 399K
代理商： AD7675
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
a
AD7675
*
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
Analog Devices, Inc., 2001
16-Bit, 100 kSPS,
Differential ADC
FUNCTIONAL BLOCK DIAGRAM
CONTROL LOGIC AND
CALIBRATION CIRCUITRY
CLOCK
OB/
2C
16
DATA[15:0]
BUSY
CS
SER/
PAR
OGND
OVDD
DGND
DVDD
SERIAL
PORT
PARALLEL
INTERFACE
BYTESWAP
RD
AVDD AGND
REF REFGND
PD
RESET
CNVST
IN–
SWITCHED
CAP DAC
AD7675
IN+
FEATURES
Throughput: 100 kSPS
INL: 1.5 LSB Max ( 0.0015% of Full-Scale)
16 Bits Resolution with No Missing Codes
S/(N+D): 94 dB Typ @ 45 kHz
THD: –110 dB Typ @ 45 kHz
Differential Input Range: 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
15 mW Typical Power Dissipation, 15 W @ 100 SPS
Power-Down Mode: 7 W Max
Package: 48-Lead Quad Flat Pack (LQFP)
Pin-to-Pin Compatible with the AD7660
Replacement of AD676, AD677
APPLICATIONS
CT Scanners
Data Acquisition
Instrumentation
Spectrum Analysis
Medical Instruments
Battery-Powered Systems
Process Control
GENERAL DESCRIPTION
The AD7675 is a 16-bit, 100 kSPS, charge redistribution SAR,
fully differential analog-to-digital converter that operates from a
single 5 V power supply. The part contains a high-speed 16-bit
sampling ADC, an internal conversion clock, error correction
circuits, and both serial and parallel system interface ports.
The AD7675 is hardware factory calibrated and is comprehensively
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 with
operation specified from –40
°
C to +85
°
C.
PRODUCT HIGHLIGHTS
1. Excellent INL
The AD7675 has a maximum integral nonlinearity of 1.5 LSB
with no missing 16-bit code.
2. Superior AC Performances
The AD7675 has a minimum dynamic of 92 dB, 94 dB typical.
3. Fast Throughput
The AD7675 is a 100 kSPS, charge redistribution, 16-bit
SAR ADC with internal error correction circuitry.
4. Single-Supply Operation
The AD7675 operates from a single 5 V supply and typically
dissipates only 17 mW. Its power dissipation decreases
with the throughput to, for instance, only 15
μ
W at a 100 SPS
throughput. It consumes 7
μ
W maximum when in power-down.
5. Serial or Parallel Interface
Versatile parallel (8 or 16 bits) or 2-wire serial interface
arrangement compatible with either 3 V or 5 V logic.
*
Patent pending
SPI and QSPI are trademarks of Motorola Inc.
MICROWIRE is a trademark of National Semiconductor Inc.
相關(guān)PDF資料
PDF描述
AD7675AST 16-Bit, 100 kSPS, Differential ADC
AD7675ASTRL 16-Bit, 100 kSPS, Differential ADC
AD7676 16-Bit +-1 LSB INL, 500 kSPS, Differential ADC
AD7676AST 16-Bit +-1 LSB INL, 500 kSPS, Differential ADC
AD7676ASTRL 16-Bit +-1 LSB INL, 500 kSPS, Differential ADC
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