AD7606B 8-Channel DAS with 16-Bit, 800 kSPS Bipolar Input, Simultaneous Sampling ADC
●16-bit ADC with 800 kSPS on all channels
●Input buffer with 5 MΩ analog input impedance
●Pin to pin compatible with the AD7606
●1 ppm/°C typical positive and negative full-scale error drift
●−40°C to +125°C operating temperature range
●Single 5 V analog supply and 1.71 V to 3.6 V VDRIVE supply
●±21 V input clamp protection with 8 kV ESD
●Extra modes available in software mode
◆Per channel selectable analog input ranges
◆Single-ended, bipolar: ±10 V, ±5 V, and ±2.5 V
◆Per channel system phase, offset, and gain calibration
◆Analog input open circuit detection feature
◆≤22 LSB (typical) open circuit code error (RPD = 10 kΩ)
◆Self diagnostics and monitoring features
◆CRC error checking on read/write data and registers
■GENERAL DESCRIPTION:
The AD7606B is a 16-bit, simultaneous sampling, analog-to -digital data acquisition system (DAS) with eight channels. Each channel contains analog input clamp protection, a programmable gain amplifier (PGA), a low-pass filter, and a 16-bit successive approximation register (SAR), analog-to -digital converter (ADC). The AD7606B also contains a flexible digital f ilter, low drift, 2.5 V precision reference and reference buffer to drive the ADC and flexible parallel and serial interfaces.
The AD7606B operates from a single 5 V supply and accommo-dates ±10 V, ± 5 V, and ±2.5 V true bipolar input ranges when sampling at throughput rates of 800 kSPS for all channels. The input clamp protection tolerates voltages up to ±21 V. T h e AD7606B has a 5 MΩ analog input impedance, resulting in less than 20 LSB bipolar zero code when the input signal is discon-nected and pulled to ground through a 10 kΩ external resistor. The single supply operation, on-chip filtering, and high input impedance eliminates the need for external driver op amps, which require bipolar supplies. For applications with lower throughput rates, the AD7606B flexible digital filter can be used to improve noise performance.
In hardware mode, the AD7606B is fully compatible with the AD7606. In software mode, the following advanced features are available:
●Additional ±2.5 V analog input range.
●Analog input range (±10 V, ± 5 V, and ±2.5 V), selectable per channel.
●Additional oversampling (OS) options, up to OS × 256.
●System gain, system offset, and system phase calibrationper channel.
●Analog input open circuit detector.
●Diagnostic multi plexer.
●Monitoring functions (serial peripheral interface (SPI)) invalid read/write, cyclic redundancy check (CRC), overvoltage and undervoltage events, busy stuck monitor, and reset detection).
Note that throughout this data sheet, multifunction pins, such as the RD/SCLK pin, are referred to either by the entire pin name or by a single function of the pin, for example, the SCLK pin,when only that function is relevant.
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AD7606B 、 ADR4525 、 LT6657 、 LTC6655 、 ADuM142E 、 ADuM6422A 、 ADuM5020 、 ADuM5028 、 AD7606 、 AD7606-6 、 AD7606-4 、 AD7607 、 AD7609 、 AD7606C-18 、 AD7606C-16 、 AD7606BBSTZ 、 AD7606BBSTZ-RL 、 EVAL-AD7606BFMCZ 、 EVAL-SDP-CH1Z 、 AD7608 |
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simultaneous sampling, analog-to -digital data acquisition system (DAS) |
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[ Power line monitoring ][ Protective relays ][ Multiphase motor control ][ Instrumentation systems ][ control systems ][ Data acquisition systems ] |
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Datasheet |
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Please see the document for details |
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LQFP |
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English Chinese Chinese and English Japanese |
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4/2021 |
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Rev.A |
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D15137-4/21(A) |
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1.3 MB |
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