Datasheet Analog Devices AD7265 — 数据表

Differential/Single-Ended Input, Dual
1 MSPS, 12-Bit, 3-Channel SAR ADC
AD7265 Data Sheet
FEATURES FUNCTIONAL BLOCK DIAGRAM REF The conversion process and data acquisition use standard
control inputs allowing easy interfacing to microprocessors or
DSPs. The input signal is sampled on the falling edge of CS;
conversion is also initiated at this point. The conversion time is
determined by the SCLK frequency. The AD7265 uses advanced
design techniques to achieve very low power dissipation at high
throughput rates. With 5 V supplies and a 1 MSPS throughput rate,
the part consumes 4 mA maximum. The part also offers flexible
power/throughput rate management when operating in normal
mode, because the quiescent current consumption is so low.
The analog input range for the part can be selected to be a 0 V
to VREF (or 2 × VREF) range, with either straight binary or twos
complement output coding. The AD7265 has an on-chip 2.5 V
reference that can be overdriven when an external reference is
preferred. This external reference range is 100 mV to VDD. The
AD7265 is available in 32-lead LFCSP and 32-lead TQFP. DVDD BUF AD7265
VA2
VA3
VA4 MUX T/H 12-BIT
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