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AD7482

Analog Devices
Part Number AD7482
Manufacturer Analog Devices
Description 3MSPS 12-Bit SAR ADC
Published Mar 23, 2005
Detailed Description 7/5/01 5 PM PRELIMINARY TECHNICAL DATA = Preliminary Technical Data FEATURES Fast Throughput Rate: 3MSPS Wide Input Ba...
Datasheet PDF File AD7482 PDF File

AD7482
AD7482

Overview
7/5/01 5 PM PRELIMINARY TECHNICAL DATA = Preliminary Technical Data FEATURES Fast Throughput Rate: 3MSPS Wide Input Bandwidth: 50MHz No Pipeline Delays with SAR ADC Excellent DC Accuracy Performance Two Parallel Interface Modes Low Power: 90mW (Full-Power) and 5mW (NAP Mode) Standby Mode: 1µA max Single +5V Supply Operation Internal +2.
5V Reference Full-Scale Overrange Mode (using 13th bit) System Offset Removal via User Access Offset Register Nominal 0 to +2.
5V Input with Shifted Range Capability 14-Bit Pin Compatible Upgrade (AD7484) GENERAL DESCRIPTION VREF3 BUF 3MSPS, 12-Bit SAR ADC AD7482 FUNCTIONAL BLOCK DIAGRAM AVDD AGND CBIAS DVDD DGND VREF1 VREF2 2.
5 V REFERENCE VIN T/H 12-Bit Error Correcting SAR AD7482 MODE1 MODE2 D12 CLIP NAP STBY RESET CONVST VDRIVE CONTROL LOGIC AND I/O REGISTERS D11 D10 D9 D8 D7 The AD7482 is a 12-bit, high speed, low power, successive-approximation ADC.
The part features a parallel interface with throughput rates of up to 3MSPS.
The part contains a low-noise, wide bandwidth track/hold amplifier which can handle input frequencies in excess of 50MHz.
The conversion process is a proprietary algorithmic successive-approximation technique which results in no pipeline delays.
The input signal is sampled and a conversion is initiated on the falling edge of a CONVST signal.
The conversion process is controlled via an internally trimmed oscillator.
Interfacing is via standard parallel signal lines making the part directly compatible with microcontrollers and DSPs.
The AD7482 provides excellent ac and dc performance specifications.
Factory trimming ensures high dc accuracy resulting in very low INL, offset and gain errors.
The part uses advanced design techniques to achieve very low power dissipation at high throughput rates.
Power consumption in normal mode of operation is 90mW.
There are two power-saving modes: a NAP mode, which keeps the reference circuitry alive for a quick power up while consuming 5mW and a STANDBY mode which r...


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