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AD7689BCPZRL7

更新时间： 2024-11-09 06:36:11
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亚德诺 - ADI 转换器模数转换器
页数 文件大小 规格书
28页 828K
描述
16-Bit, 4-Channel/8-Channel, 250 kSPS PulSAR ADC

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AD7689BCPZRL7 数据手册

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16-Bit, 4-Channel/8-Channel,  
250 kSPS PulSAR ADC  
AD7682/AD7689  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
2.7V TO 5V  
0.5V TO 4.096V  
0.1µF  
0.5V TO VDD  
22µF  
16-bit resolution with no missing codes  
4-channel (AD7682)/8-channel (AD7689) multiplexer with  
choice of inputs  
REFIN  
REF  
VDD  
Unipolar single ended  
Differential (GND sense)  
Pseudobipolar  
Throughput: 250 kSPS  
INL: 0.5 LSB typical, 1.5 LSB maximum ( 23 ppm or FSR)  
Dynamic range: 93.8 dB  
SINAD: 92.5 dB @ 20 kHz  
THD: −100 dB @ 20 kHz  
Analog input range: 0 V to VREF with VREF up to VDD  
Multiple reference types  
1.8V  
TO  
VDD  
BAND GAP  
VIO  
REF  
AD7682/  
AD7689  
TEMP  
SENSOR  
CNV  
IN0  
IN1  
IN2  
IN3  
IN4  
IN5  
IN6  
IN7  
SCK  
SDO  
DIN  
SPI SERIAL  
INTERFACE  
16-BIT SAR  
ADC  
MUX  
ONE-POLE  
LPF  
SEQUENCER  
COM  
GND  
Internal selectable 2.5 V or 4.096 V  
External buffered (up to 4.096 V)  
External (up to VDD)  
Figure 1.  
Table 1. Multichannel 14-/16-Bit PulSAR® ADC  
Internal temperature sensor  
Channel sequencer, selectable 1-pole filter, busy indicator  
No pipeline delay, SAR architecture  
Single-supply 2.7 V to 5.5 V operation with  
1.8 V to 5 V logic interface  
Type  
Channels 250 kSPS  
500 kSPS ADC Driver  
14-Bit  
16-Bit  
16-Bit  
8
4
8
AD7949  
AD7682  
AD7689  
ADA4841-x  
ADA4841-x  
ADA4841-x  
AD7699  
Serial interface compatible with SPI, MICROWIRE,  
QSPI, and DSP  
Power dissipation  
GENERAL DESCRIPTION  
The AD7682/AD7689 are 4-channel/8-channel, 16-bit, charge  
redistribution successive approximation register (SAR) analog-  
to-digital converters (ADCs) that operate from a single power  
supply, VDD.  
3.5 mW @ 2.5 V/200 kSPS  
12 mW @ 5 V/250 kSPS  
Standby current: 50 nA  
20-lead 4 mm × 4 mm LFCSP package  
The AD7682/AD7689 contain all components for use in a  
multichannel, low power data acquisition system, including a  
true 16-bit SAR ADC with no missing codes; a 4-channel  
(AD7682) or 8-channel (AD7689), low crosstalk multiplexer  
useful for configuring the inputs as single ended (with or  
without ground sense), differential, or bipolar; an internal low  
drift reference (selectable 2.5 V or 4.096 V) and buffer; a  
temperature sensor; a selectable one-pole filter; and a sequencer  
that is useful when channels are continuously scanned in order.  
APPLICATIONS  
Battery-powered equipment  
Medical instruments: ECG/EKG  
Mobile communications: GPS  
Personal digital assistants  
Power line monitoring  
Data acquisition  
Seismic data acquisition systems  
Instrumentation  
Process control  
The AD7682/AD7689 use a simple SPI interface for writing to  
the configuration register and receiving conversion results. The  
SPI interface uses a separate supply, VIO, which is set to the  
host logic level. Power dissipation scales with throughput.  
Each AD7682/AD7689 is housed in a tiny 20-lead LFCSP with  
operation 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 registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2008 Analog Devices, Inc. All rights reserved.  
 
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AD7689BCPZRL7 替代型号

型号 品牌 替代类型 描述 数据表
AD7689ACPZRL7 ADI

完全替代

 16-Bit, 4-Channel/8-Channel, 250 kSPS PulSAR ADC
AD7689BCPZ ADI

类似代替

 16-Bit, 4-Channel/8-Channel, 250 kSPS PulSAR ADC
AD7682BCPZ ADI

类似代替

 16-Bit, 4-Channel/8-Channel, 250 kSPS PulSAR ADC

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