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AD7616-PBSTZ-RL Datasheet(PDF) 1 Page - Analog Devices |
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AD7616-PBSTZ-RL Datasheet(HTML) 1 Page - Analog Devices |
1 / 47 page 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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