AD7482
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AD7482

12-Bit, 3 MSPS SAR ADC

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 1
1ku List Price Starting From $13.74
Features
  • Fast Throughput Rate: 3 MSPS
  • Wide Input Bandwidth: 40 MHz
  • No Pipeline Delays with SAR ADC
  • Excellent DC Accuracy Performance
  • Two Parallel Interface Modes
  • Low Power: 90 mW (Full Power) and 2.5 mW (NAP Mode)
  • Standby Mode: 2 µA Max
  • See Data Sheet for Additional Information
Additional Details
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The AD7482 is a 12-bit, high speed, low power, successive approximation ADC. The part features a parallel interface with throughput rates up to 3 MSPS. The part contains a low noise, wide bandwidth track-and-hold that can handle input frequencies in excess of 40 MHz.

The conversion process is a proprietary algorithmic successive approximation technique that results in no pipeline delays. The input signal is sampled, and a conversion is initiated on the falling edge of the CONVSTsignal. 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 specifica-tions. 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 the normal mode of operation is 90 mW. There are two power saving modes: a nap mode, which keeps the reference circuitry alive for a quick power-up while consuming 2.5 mW, and a standby mode that reduces power consumption to a mere 10 μW.

The AD7482 features an on-board 2.5 V reference but can also accommodate an externally provided 2.5 V reference source. The nominal analog input range is 0 V to 2.5 V, but an offset shift capability allows this nominal range to be offset by ±200 mV. This allows the user considerable flexibility in setting the bottom end reference point of the signal range, a useful feature when using single-supply op amps.

The AD7482 also provides an 8% overrange capability via a 13th bit. Therefore, if the analog input range strays outside the nominal by up to 8%, the user can still accurately resolve the signal by using the 13th bit. The AD7482 is powered by a 4.75 V to 5.25 V supply. The part also provides a VDRIVE pin that allows the user to set the voltage levels for the digital interface lines. The range for this VDRIVE pin is 2.7 V to 5.25 V. The part is housed in a 48-lead LQFP package and is specified over a −40°C to +85°C temperature range.

Data Sheet, Rev. A, 9/08

Part Models 1
1ku List Price Starting From $13.74

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7482BSTZ
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Product Lifecycle

PCN

Feb 8, 2010

- 04_0080

Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.

Dec 21, 2009

- 09_0266

Change in the Normal mode Idd static and Normal mode Idd operationsl specifications for the AD7485, AD7482 and AD7484

Jan 5, 2009

- 07_0077

Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 8, 2010

- 04_0080

arrow down

Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.

Dec 21, 2009

- 09_0266

arrow down

Change in the Normal mode Idd static and Normal mode Idd operationsl specifications for the AD7485, AD7482 and AD7484

Jan 5, 2009

- 07_0077

arrow down

Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages

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