AD7865 Fast, Low-Power, 4-Channel, Simultaneous Sampling, 14-bit ADC

The AD7865 is a fast, low power, four-channel simultaneous sampling 14-bit A/D converter that operates from a single +5 V supply. The part contains a 2.5 µs successive approximation ADC, four track/hold amplifiers, 2.5 V reference, on chip clock oscillator, signal conditioning circuitry and a high speed parallel interface. The input signals on four channels are sampled simultaneously thus preserving the relative phase information of the signals on the four analog inputs. The part accepts analog input ranges of ±10 V, ±5 V or ±2.5 V. Overvoltage protection on the analog inputs for the part allows the input voltage to go to ±20 V without damaging the parts or affecting a conversion in progress.

Features and Benefits
  • Fast (2.4 µs) 14-Bit ADC
  • Four Simultaneously Sampled Inputs
  • Four Track/Hold Amplifiers
  • 0.35 µs Track/Hold Acquisition Time
  • 2.4 µs Conversion Time per Channel
  • HW/SW Select of Channel Sequence for Conversion
  • Single Supply Operation
  • Low Power, 115 mW Typ
  • Selection of Input Ranges:
  • ±10 V, ±5 V and ±2.5 V
    0 V to 5 V and 0 V to 2.5 V
  • High Speed Parallel Interface Allows Interfacing to 3 V Processors
  • Power Saving Mode, 15 µW Typ
  • Overvoltage Protection on Analog Inputs
Analog to Digital Converters
Data Sheets
Documentnote
AD7865: Four-Channel, Simultaneous Sampling, Fast, 14-Bit ADC Data Sheet (Rev. B)PDF 210 kB
Application Notes
Documentnote
AN-354: Ask the Applications Engineer 1-Multi TroublesPDF 160 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD7865ASZ-1 Production44 ld MQFP (13.90mm wide)OTH 96-40 to 85C18.8116.14Y
AD7865ASZ-1REEL Production44 ld MQFP (13.90mm wide)REEL 800-40 to 85C18.8116.14Y
AD7865ASZ-2 Production44 ld MQFP (13.90mm wide)OTH 96-40 to 85C18.8116.14Y
AD7865ASZ-2REEL Production44 ld MQFP (13.90mm wide)REEL 800-40 to 85C18.8116.14Y
AD7865ASZ-3 Production44 ld MQFP (13.90mm wide)OTH 96-40 to 85C18.8116.14Y
AD7865ASZ-3REEL Production44 ld MQFP (13.90mm wide)REEL 800-40 to 85C18.8116.14Y
AD7865BSZ-1 Production44 ld MQFP (13.90mm wide)OTH 96-40 to 85C23.9419.99Y
AD7865BSZ-1REEL Production44 ld MQFP (13.90mm wide)REEL 800-40 to 85C23.9419.99Y
AD7865BSZ-2 Production44 ld MQFP (13.90mm wide)OTH 96-40 to 85C23.9419.99Y
AD7865BSZ-3 Production44 ld MQFP (13.90mm wide)OTH 96-40 to 85C23.9419.99Y
AD7865BSZ-3REEL Production44 ld MQFP (13.90mm wide)REEL 800-40 to 85C23.9419.99Y
AD7865YSZ-1 Production44 ld MQFP (13.90mm wide)OTH 96-40 to 105C24.4920.7Y
AD7865YSZ-2 Last Time Buy44 ld MQFP (13.90mm wide)OTH 96-40 to 105C24.4920.7Y
AD7865YSZ-3 Production44 ld MQFP (13.90mm wide)OTH 96-40 to 105C24.4920.7Y
Reference Materials
AD7865: Four-Channel, Simultaneous Sampling, Fast, 14-Bit ADC Data Sheet (Rev. B) ad7865
AN-354: 应用工程师问答——1 几个问题 (Rev. 0) ad7865
AN-354: Ask the Applications Engineer 1-Multi Troubles ad7865
MS-2210:高速ADC的电源设计 ad9861