AD7451 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD7451
Manufacturer

ADI
ChipWorker Part#

CW389427731
Description

Pseudo Differential Input, 1MSPS, 12Bit ADC in an 8-Lead SOT-23
Documentation

Datasheet

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AD7451 Specifications

Attribute	Attribute Value

Part Number	AD7451
Manufacturer	ADI
ChipWorker Part#	CW389427731
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The AD7441/AD7451 are, respectively, 10-/12-bit high speed, low power, single-supply, successive approximation (SAR), analog-to-digital converters (ADCs) that feature a pseudo differential analog input. These parts operate from a single 2.7 V to 5.25 V power supply and achieve very low power dissipation at high throughput rates of up to 1 MSPS.
The AD7441/AD7451 contain a low noise, wide bandwidth, differential track-and-hold (T/H) amplifier that handles input frequencies up to 3.5 MHz. The reference voltage for these devices is applied externally to the VREF pin and can range from 100 mV to VDD, depending on the power supply and what suits the application.
The conversion process and data acquisition are controlled using overbar: CS and the serial clock, allowing the device to interface with microprocessors or DSPs. The input signals are sampled on the falling edge of overbar: CS when the conversion is initiated. The SAR architecture of these parts ensures that there are no pipeline delays.
**Product Highlights**
Operation with 2.7 V to 5.25 V Power Supplies.
High Throughput with Low Power Consumption. With a 3 V supply, the AD7441/AD7451 offer 4 mW maxi-mum power consumption for a 1 MSPS throughput rate.
Pseudo Differential Analog Input.
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. These parts also feature a shutdown mode to maximize power efficiency at lower throughput rates.
Variable Voltage Reference Input.
No Pipeline Delays.
Accurate Control of Sampling Instant via overbar: CS Input and Once-Off Conversion Control.
ENOB > 10 Bits Typically with 500 mV Reference.
**Applications**
Transducer interface
Battery-powered systems
Data acquisition systems
Portable instrumentation
### Features and Benefits
Fast throughput rate: 1 MSPS
Specified for VDD of 2.7 V to 5.25 V
Low power at maximum throughput rate: 4 mW
maximum at 1 MSPS with VDD = 3 V 9.25 mW
maximum at 1 MSPS with VDD = 5 V
Wide input bandwidth: 70 dB SINAD at 100 kHz input frequency
Pseudo differential analog input
Flexible power/serial clock speed management
No pipeline delays
High speed serial interface: SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible
Power-down mode: 1 μA maximum
8-lead SOT-23 and MSOP packages

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