參數(shù)資料
型號： AD7609BSTZ-RL
廠商： Analog Devices Inc
文件頁數(shù)： 1/36頁
文件大?。?/td> 0K
描述： IC DAS W/ADC 18BIT 8CH 64LQFP
標(biāo)準(zhǔn)包裝： 1,500
類型： 數(shù)據(jù)采集系統(tǒng)（DAS），ADC
分辨率（位）： 18 b
采樣率（每秒）： 200k
數(shù)據(jù)接口： DSP，MICROWIRE?，并聯(lián)，QSPI?，串行，SPI?
電壓電源： 模擬和數(shù)字
電源電壓： 2.3 V ~ 5 V，4.75 V ~ 5.25 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 64-LQFP
供應(yīng)商設(shè)備封裝： 64-LQFP（10x10）
包裝： 帶卷 (TR)
8-Channel Differential 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
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
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 differential 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
Performance
7 kV ESD rating on analog input channels
98 dB SNR, 107 dB THD
Dynamic range: up to 105 dB typical
Low power: 100 mW
Standby mode: 25 mW
64-lead LQFP package
APPLICATIONS
Power line monitoring and protection systems
Multiphase motor control
Instrumentation and control systems
Multiaxis positioning systems
Data acquisition systems (DAS)
COMPANION PRODUCTS
External References: ADR421, ADR431
Additional companion products on the AD7609 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
8
16 Bits
8
6
4
14 Bits
8
1
Patent pending.
FUNCTIONAL BLOCK DIAGRAM
V1+
V1–
RFB
1M
CLAMP
T/H
V2+
V2–
1M
CLAMP
T/H
V3+
V3–
1M
CLAMP
T/H
V4+
V4–
1M
CLAMP
T/H
V5+
V5–
1M
CLAMP
T/H
V6+
V6–
1M
CLAMP
T/H
V7+
V7–
1M
CLAMP
T/H
V8+
V8–
1M
CLAMP
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]
AD7609
09760-
001
SECOND-
ORDER LPF
SECOND-
ORDER LPF
SECOND-
ORDER LPF
SECOND-
ORDER LPF
SECOND-
ORDER LPF
SECOND-
ORDER LPF
SECOND-
ORDER LPF
SECOND-
ORDER LPF
Figure 1.
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