AD7940 - ADI

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

Part No

AD7940
Manufacturer

ADI
ChipWorker Part#

CW983502163
Description

3mW, 100KSPS, 14Bit ADC in 6-Lead SOT-23
Documentation

Datasheet

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AD7940 Specifications

Attribute	Attribute Value

Part Number	AD7940
Manufacturer	ADI
ChipWorker Part#	CW983502163
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The AD79401 is a 14-bit, fast, low power, successive approximation ADC. The part operates from a single 2.50 V to 5.5 V power supply and features throughput rates up to 100 kSPS. The part contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 7 MHz.
The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and the conversion is also initiated at this point. There are no pipelined delays associated with the part.
The AD7940 uses advanced design techniques to achieve very low power dissipation at fast throughput rates. The reference for the part is taken internally from VDD, which allows the widest dynamic input range to the ADC. Thus, the analog input range for this part is 0 V to VDD. The conversion rate is determined by the SCLK frequency.
This part features a standard successive approximation ADC with accurate control of the sampling instant via a CS input and once off conversion control.
### Features and Benefits
Fast throughput rate: 100 kSPS
Specified for VDD of 2.5 V to 5.5 V
Low power
4 mW typ at 100 kSPS with 3 V supplies
17 mW typ at 100 kSPS with 5 V supplies
Wide input bandwidth:
81 dB SINAD at 10 kHz input frequency
Flexible power/serial clock speed management
No pipeline delays
High speed serial interface
SPI®/QSPI™/MICROWIRE™/DSP compatible
Standby mode: 0.5 μA max
6-Lead SOT-23 and 8-Lead MSOP packages
6-Lead SOT-23 and 8-Lead MSOP packages
Standby Mode: 0.5 µA max

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