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AD7616-PBSTZ-RL Datasheet(PDF) 1 Page - Analog Devices

Part # AD7616-PBSTZ-RL
Description  16-Channel DAS with 16-Bit, Bipolar Input, Dual Simultaneous Sampling ADC
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7616-PBSTZ-RL Datasheet(HTML) 1 Page - Analog Devices

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16-Channel DAS with 16-Bit, Bipolar Input,
Dual Simultaneous Sampling ADC
Data Sheet
AD7616-P
Rev. 0
Document Feedback
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
©2017 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
16-channel, dual, simultaneously sampled inputs
Independently selectable channel input ranges
True bipolar: ±10 V, ±5 V, ±2.5 V
Single 5 V analog supply and 2.3 V to 3.6 V V
DRIVE supply
Fully integrated data acquisition solution
Analog input clamp protection
Input buffer with 1 MΩ analog input impedance
1st-order antialiasing analog filter
On-chip accurate reference and reference buffer
Dual 16-bit SAR ADC
Throughput rate: 2 × 1 MSPS
Oversampling capability with digital filter
Flexible sequencer with burst mode
Parallel digital interface
Optional CRC error checking
Hardware/software configuration
Performance
92 dB SNR at 500 kSPS (2× OSR)
90.5 dB SNR at 1 MSPS
−103 dB THD
±1 LSB INL (typical), ±0.99 LSB DNL (maximum)
8 kV ESD rating on analog input pins
On-chip self detect function
80-lead LQFP package
APPLICATIONS
Power line monitoring
Protective relays
Multiphase motor control
Instrumentation and control systems
Data acquisition systems (DASs)
GENERAL DESCRIPTION
The AD7616-P is a 16-bit, DAS that supports dual simultaneous
sampling of 16 channels. The AD7616-P operates from a single
5 V supply and can accommodate ±10 V, ±5 V, and ±2.5 V true
bipolar input signals while sampling at throughput rates up to
1 MSPS per channel pair with 90.5 dB SNR. Higher signal-to-
noise ratio (SNR) performance can be achieved with the on-chip
oversampling mode (92 dB for an oversampling ratio (OSR) of 2).
The input clamp protection circuitry tolerates voltages up to
±21 V. The AD7616-P has 1 MΩ analog input impedance,
regardless of sampling frequency. The single-supply operation,
on-chip filtering, and high input impedance eliminate the need
for driver op amps and external bipolar supplies.
The device contains analog input clamp protection, a dual, 16-bit
charge redistribution successive approximation register (SAR)
analog-to-digital converter (ADC), a flexible digital filter, a
2.5 V reference and reference buffer, and a high speed parallel
interface.
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
FIRST-
ORDER LPF
FIRST-
ORDER LPF
9:1
MUX
BUSY
CONVST
CONTROL
INPUTS
CLK OSC
REFINOUT REFSEL
PAR
OSR
DIGITAL
FILTER
2.5V
REF
REFCAP
VCC
AGND
REGCAP REGCAPD
1.8V
DLDO
9:1
MUX
16-BIT
SAR
16-BIT
SAR
VDRIVE
2:1
MUX
HW_RNGSEL0, HW_RNGSEL1
CHSEL2 TO CHSEL0
SEQEN
FLEXIBLE
SEQUENCER
WR/BURST
RESET
DGND
DB15 TO DB0
PARALLEL
FIRST-
ORDER LPF
CLAMP
CLAMP
FIRST-
ORDER LPF
1.8V
ALDO
PARALLEL
INTERFACE
1MΩ
RFB
RFB
1MΩ
V0A
V0AGND
V7A
V7AGND
V0B
V0BGND
V7B
V7BGND
CLAMP
CLAMP
1MΩ
RFB
RFB
1MΩ
CLAMP
CLAMP
1MΩ
RFB
RFB
1MΩ
CLAMP
CLAMP
1MΩ
RFB
RFB
1MΩ
VCC
ALDO
AD7616-P


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