参数资料
型号: AD7608BSTZ
厂商: Analog Devices Inc
文件页数: 1/32页
文件大小: 0K
描述: IC DAS W/ADC 18BIT 8CH 64LQFP
特色产品: A/D Converters
标准包装: 1
类型: 数据采集系统(DAS),ADC
分辨率(位): 18 b
采样率(每秒): 200k
数据接口: DSP,MICROWIRE?,并联,QSPI?,串行,SPI?
电压电源: 模拟和数字
电源电压: 2.3 V ~ 5.25 V,4.75 V ~ 5.25 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 托盘
8-Channel DAS with 18-Bit, Bipolar,
Simultaneous Sampling ADC
Data Sheet
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2011-2012 Analog Devices, Inc. All rights reserved.
FEATURES
8 simultaneously sampled inputs
True bipolar analog input ranges: ±10 V, ±5 V
Single 5 V analog supply and 2.3 V to 5.25 V VDRIVE
Fully integrated data acquisition solution
Analog input clamp protection
Input buffer with 1 MΩ analog input impedance
Second-order antialiasing analog filter
On-chip accurate reference and reference buffer
18-bit ADC with 200 kSPS on all channels
Oversampling capability with digital filter
Flexible parallel/serial interface
SPI/QSPI/MICROWIRE/DSP compatible
Pin compatible solutions from 14-bits to 18-bits
Performance
7 kV ESD rating on analog input channels
98 dB SNR, 107 dB THD
Low power: 100 mW
Standby mode: 25 mW
64-lead LQFP package
APPLICATIONS
Power line monitoring and protection systems
Multiphase motor controls
Instrumentation and control systems
Multiaxis positioning systems
Data acquisition systems (DAS)
COMPANION PRODUCTS
External References: ADR421, ADR431
Voltage Regulator Design Tool: ADIsimPower, Supervisor
Complete list of complements on AD7608 product page
Table 1. High Resolution, Bipolar Input, Simultaneous
Sampling DAS Solutions
Resolution
Single-
Ended
Inputs
True
Differential
Inputs
Number of
Simultaneous
Sampling Channels
18 Bits
AD7609
8
16 Bits
8
6
4
14 Bits
8
FUNCTIONAL BLOCK DIAGRAM
V1
V1GND
RFB
1M
CLAMP
SECOND
ORDER LPF
T/H
V2
V2GND
1M
CLAMP
SECOND
ORDER LPF
T/H
V3
V3GND
1M
CLAMP
SECOND
ORDER LPF
T/H
V4
V4GND
1M
CLAMP
SECOND
ORDER LPF
T/H
V5
V5GND
1M
CLAMP
SECOND
ORDER LPF
T/H
V6
V6GND
1M
CLAMP
SECOND
ORDER LPF
T/H
V7
V7GND
1M
CLAMP
SECOND
ORDER LPF
T/H
V8
V8GND
1M
CLAMP
SECOND
ORDER LPF
T/H
8:1
MUX
AGND
BUSY
FRSTDATA
CONVST A CONVST B RESET RANGE
CONTROL
INPUTS
CLK OSC
REFIN/REFOUT
REF SELECT
AGND
OS 2
OS 1
OS 0
DOUTA
DOUTB
RD/SCLK
CS
PAR/SER SEL
VDRIVE
18-BIT
SAR
DIGITAL
FILTER
PARALLEL/
SERIAL
INTERFACE
2.5V
REF
REFCAPB
REFCAPA
SERIAL
PARALLEL
REGCAP
2.5V
LDO
REGCAP
2.5V
LDO
AVCC
DB[15:0]
AD7608
08
93
8-
00
1
Figure 1.
1 Patent pending.
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