8-Channel DAS with 14-Bit, Bipolar Input,
Simultaneous Sampling ADC
Data Sheet
AD7607
FEATURES
APPLICATIONS
8 simultaneously sampled inputs
Power-line monitoring and protection systems
Multiphase motor control
Instrumentation and control systems
Multiaxis positioning systems
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
Data acquisition systems (DAS)
Input buffer with 1 MΩ analog input impedance
Second-order antialiasing analog filter
On-chip accurate reference and reference buffer
14-bit ADC with 200 kSPS on all channels
Flexible parallel/serial interface
SPI/QSPI™/MICROWIRE™/DSP compatible
Pin-compatible solutions from 14 bits to 18 bits
Performance
Table 1. High Resolution, Bipolar Input, Simultaneous
Sampling DAS Solutions
Single-Ended
Inputs
Number of Simultaneous
Sampling Channels
Resolution
18 Bits
AD7608
AD7606
AD7606-6
AD7606-4
AD7607
8
8
6
4
8
16 Bits
7 kV ESD rating on analog input channels
Fast throughput rate: 200 kSPS for all channels
85.5 dB SNR at 50 kSPS
14 Bits
INL 0.25 LSB, DNL 0.25 LSB
Low power: 100 mW at 200 kSPS
Standby mode: 25 mW typical
64-lead LQFP package
FUNCTIONAL BLOCK DIAGRAM
AV
CC
AV
CC
REGCAP REGCAP
REFCAPB REFCAPA
R
1MΩ
FB
V1
CLAMP
CLAMP
T/H
SECOND-
ORDER LPF
V1GND
2.5V
LDO
2.5V
LDO
R
R
FB
FB
1MΩ
1MΩ
REFIN/REFOUT
V2
CLAMP
CLAMP
T/H
T/H
T/H
T/H
T/H
T/H
T/H
SECOND-
V2GND
ORDER LPF
R
R
FB
1MΩ
1MΩ
REF SELECT
AGND
2.5V
REF
FB
V3
CLAMP
CLAMP
OS 2
OS 1
OS 0
SECOND-
ORDER LPF
V3GND
R
R
FB
FB
1MΩ
1MΩ
V4
CLAMP
CLAMP
D
D
A
B
SECOND-
ORDER LPF
OUT
V4GND
SERIAL
R
R
FB
1MΩ
1MΩ
OUT
8:1
MUX
PARALLEL/
SERIAL
RD/SCLK
CS
FB
DIGITAL
FILTER
14-BIT
SAR
V5
CLAMP
CLAMP
INTERFACE
SECOND-
ORDER LPF
V5GND
R
R
FB
1MΩ
1MΩ
PAR/SER/BYTE SEL
V
DRIVE
FB
V6
CLAMP
CLAMP
SECOND-
ORDER LPF
PARALLEL
DB[15:0]
V6GND
R
R
FB
FB
1MΩ
1MΩ
AD7607
V7
CLAMP
CLAMP
SECOND-
ORDER LPF
V7GND
CLK OSC
R
R
FB
1MΩ
1MΩ
FB
BUSY
CONTROL
INPUTS
V8
CLAMP
CLAMP
SECOND-
ORDER LPF
FRSTDATA
V8GND
R
FB
1MΩ
AGND
CONVST A CONVST B RESET RANGE
Figure 1.
Rev. B
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
rightsof third parties that may result fromits 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 andregisteredtrademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2010-2012 Analog Devices, Inc. All rights reserved.