Simultaneous Sampling Dual 250 KSPS 12-Bit ADC

The AD7862 is a high speed, low power, dual 12-bit A/D converter that operates from a single +5 V supply. The part contains two 4 s successive approximation ADCs two track/ hold Amplifiers an internal +2.5 V reference and a high speed parallel Interface There are four Analog inputs that are grouped into two channels (A & B) selected by the A0 input. Each channel has two inputs (VA1 & VA2 or VB1 & VB2) that CAN be sampled and converted simultaneously thus preserving the relative phase information of the signals on both Analog inputs. The part accepts an Analog input range of 10 V (AD7862-10), 2.5 V (AD7862-3) and 02.5 V (AD7862-2). Overvoltage protection on the Analog inputs for the part allows the input voltage to go to 17 V, 7 V or +7 V, respectively, without causing damage.
A single conversion start signal (CONVST) places both track/ holds into hold simultaneously and initiates conversion on both inputs. The BUSY signal indicates the end of conversion, and at this time the conversion results for both channels are available to be read. The first read after a conversion accesses the result from VA1 or VB1, while the second read accesses the result from VA2 or VB2, depending on whether the multiplexer select A0 is low or high, respectively. Data is read from the part via a 12-bit parallel data bus with standard CS and RD signals.
In addition to the traditional dc accuracy specifications such as linearity, full-scale and offset errors, the part is also specified for dynamic performance parameters including harmonic distortion and signal-to-noise ratio.
The AD7862 is fabricated in Analog Devices' Linear Compatible CMOS (LC2MOS) process, a mixed technology process that combines precision bipolar circuits with low power CMOS Logic It is available in 28-lead SSOP, SOIC and DIP.
By Analog Devices, Inc.
AD7862 's PackagesAD7862 's pdf datasheet
AD7862ACHIPS-10
AD7862AN-10 PDIP
AD7862AN-3 PDIP
AD7862ANZ-10 PDIP
AD7862ANZ-3 PDIP
AD7862AR-10 SOIC
AD7862AR-10REEL SOIC
AD7862AR-2 SOIC
AD7862AR-3 SOIC
AD7862AR-3REEL SOIC
AD7862ARS-10 SSOP
AD7862ARS-10REEL SSOP
AD7862ARS-2 SSOP
AD7862ARS-2REEL SSOP
AD7862ARS-3 SSOP
AD7862ARS-3REEL SSOP
AD7862ARSZ-10 SSOP
AD7862ARSZ-10REEL SSOP
AD7862ARSZ-2 SSOP
AD7862ARSZ-2REEL SSOP
AD7862ARSZ-3 SSOP
AD7862ARSZ-3REEL SSOP
AD7862ARZ-10 SOIC
AD7862ARZ-10REEL SOIC
AD7862ARZ-3 SOIC
AD7862ARZ-3REEL SOIC
AD7862BR-10 SOIC
AD7862BR-10REEL SOIC
AD7862BR-3 SOIC
AD7862BR-3REEL SOIC
AD7862BRZ-10 SOIC
AD7862BRZ-10REEL SOIC
AD7862BRZ-3 SOIC




AD7862 Pinout, Pinouts
AD7862 pinout,Pin out
This is one package pinout of AD7862,If you need more pinouts please download AD7862's pdf datasheet.

AD7862 Application circuits
AD7862 circuits
This is one application circuit of AD7862,If you need more circuits,please download AD7862's pdf datasheet.


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