AD7457
Info: : PRODUCTION
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AD7457

Pseudo Differential Input, 100 kSPS, 12-Bit ADC in 8-Lead SOT-23

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 1
1ku List Price Starting From $3.01
Features
  • Specified for VDD of 2.7 V to 
    5.25 V
  • Very Low Power:
    - 0.9 mW max at 100 kSPS with VDD = 3V
    - 3 mW max at 100 kSPS with VDD = 5V
  • Pseudo Differential Analog Input
  • 70 dB SINAD at 30 kHz Input Frequency
  • No Pipeline Delays
  • Serial Interface
    - SPI®/QSPI™/MICROWIRE™/DSP
    Compatible
  • Automatic Power-Down Mode
  • 8 Pin SOT-23
Additional Details
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The AD7457 is a 12-bit, low power, successive-approximation (SAR) analog-to-digital converter that features a pseudo differential analog input. This part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 100 kSPS.

The part contains a low-noise, wide bandwidth, differential track and hold amplifier (T/H) which can handle input frequencies in excess of 1 MHz. The reference voltage for the AD7457 is applied externally to the VREF pin and can range from 100mV to VDD, depending on what suits the application.

The conversion process and data acquisition are controlled using CS and the serial clock allowing the device to interface with Microprocessors or DSPs. 

The AD7457 uses advanced design techniques to achieve very low power dissipation.

PRODUCT HIGHLIGHTS

  1. Operation with 2.7 V to 5.25 V power supplies.
  2. Low power consumption. With a 3 V supply, the AD7457 offers 0.9 mW maximum power consumption for a 100 kSPS throughput rate.
  3. Pseudo differential analog input.
  4. Flexible power/serial clock speed management. The conversion rate is determined by the serial clock, allowing the power to be reduced as the conversion time is reduced through the serial clock speed increase. Automatic power-down after conversion allows the average power consumption to be reduced.
  5. Variable voltage reference input.
  6. No pipeline delays.
  7. Accurate control of the sampling instant via the CS input and once-off conversion control.
  8. ENOB > 10 bits typically with 500 mV reference.
Part Models 1
1ku List Price Starting From $3.01

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7457BRTZ-REEL7
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Product Lifecycle

PCN

Aug 16, 2017

- 16_0291

CANCELLED: Addition of Amkor Philippines as Alternate Assembly Site for 5L, 6L and 8L SOT23 Chip-On-Lead Packages

Feb 8, 2010

- 04_0080

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

Feb 4, 2010

- 10_0009

Halogen Free Material Change for SOT_23 Products

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Aug 16, 2017

- 16_0291

arrow down

CANCELLED: Addition of Amkor Philippines as Alternate Assembly Site for 5L, 6L and 8L SOT23 Chip-On-Lead Packages

Feb 8, 2010

- 04_0080

arrow down

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

Feb 4, 2010

- 10_0009

arrow down

Halogen Free Material Change for SOT_23 Products

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