AD7606 Datasheet, PDF (1/36 Pages) Analog Devices – 8-/6-/4-Channel DAS with 16-Bit,Bipolar Input,Simultaneous Sampling ADC

8-/6-/4-Channel DAS with 16-Bit, Bipolar
Input, Simultaneous Sampling ADC
AD7606/AD7606-6/AD7606-4
FEATURES
8/6/4 simultaneously sampled inputs
True bipolar analog input ranges: ±10 V, ±5 V
Single 5 V analog supply and 2.3 V to 5 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
16-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
95.5 dB SNR, −107 dB THD
±0.5 LSB INL, ±0.5 LSB DNL
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)
Table 1. High Resolution, Bipolar Input, Simultaneous
Sampling DAS Solutions
Resolution
Single-
Ended
Inputs
True
Number of
Differential Simultaneous
Inputs
Sampling Channels
18 Bits
AD7608 AD7609
8
16 Bits
AD7606
8
AD7606-6
6
AD7606-4
4
14 Bits
AD7607
8
V1
V1GND
V2
V2GND
V3
V3GND
V4
V4GND
V5
V5GND
V6
V6GND
V7
V7GND
V8
V8GND
1MΩ
CLAMP
CLAMP
1MΩ
1MΩ
CLAMP
CLAMP
1MΩ
1MΩ
CLAMP
CLAMP
1MΩ
1MΩ
CLAMP
CLAMP
1MΩ
1MΩ
CLAMP
CLAMP
1MΩ
1MΩ
CLAMP
CLAMP
1MΩ
1MΩ
CLAMP
CLAMP
1MΩ
1MΩ
CLAMP
CLAMP
1MΩ
FUNCTIONAL BLOCK DIAGRAM
AV_CC
AV_CC
REGCAP REGCAP REFCAPB REFCAPA
R_FB
SECOND- ^T/H
R_FB ^{ORDER LPF}
R_FB
SECOND- ^T/H
R_FB ^{ORDER LPF}
R_FB
SECOND- ^T/H
R_FB ^{ORDER LPF}
R_FB
SECOND- ^T/H
R_FB ^{ORDER LPF}
R_FB
SECOND- ^T/H
R_FB ^{ORDER LPF}
R_FB
SECOND- ^T/H
R_FB ^{ORDER LPF}
R_FB
SECOND- ^T/H
R_FB ^{ORDER LPF}
R_FB
SECOND- ^T/H
R_FB ^{ORDER LPF}
2.5V
LDO
2.5V
LDO
2.5V
REF
8:1
MUX
16-BIT
SAR
SERIAL
DIGITAL
FILTER
PARALLEL/
SERIAL
INTERFACE
AD7606
CLK OSC
CONTROL
INPUTS
PARALLEL
AGND
CONVST A CONVST B RESET RANGE
Figure 1.
REFIN/REFOUT
REF SELECT
AGND
OS 2
OS 1
OS 0
D_OUTA
D_OUTB
RD/SCLK
CS
PAR/SER/BYTE SEL
V_DRIVE
DB[15:0]
BUSY
FRSTDATA
Rev. 0
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