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Part Number : AD7440
Function : Differential Input, 1 MSPS 10-Bit and 12-Bit ADCs in an 8-Lead SOT-23
Maker : Analog Devices

Pinouts :
AD7440 datasheet

Description :

GENERAL DESCRIPTION
The AD7440/AD7450A are 10-bit and 12-bit high speed, low power, successive approximation (SAR) analog-to-digital converters with a fully differential analog input. These parts operate from a single 3 V or 5 V power supply and use advanced design techniques to achieve very low power
dissipation at throughput rates up to 1 MSPS. The SAR architecture of these parts ensures that there are no pipeline delays. The parts contain a low noise, wide bandwidth, differential track-and-hold amplifier (T/H) that can handle input frequencies up to 3.5 MHz. The reference voltage is applied externally to the VREFpin and can be varied from 100 mV to 3.5 V depending on the power supply and what suits the application. The value of the reference voltage determines the common-mode voltage range of the part. With this truly differential input structure and variable reference input, the user can select a variety of input ranges and bias points.

FEATURES
Fast throughput rate: 1 MSPS
Specified for VDDof 3 V and 5 V
Low power at max throughput rate
 4 mW max at 1 MSPS with 3 V supplies
 9.25 mW max at 1 MSPS with 5 V supplies
Fully differential analog input
Wide input bandwidth
 70 dB SINAD at 100 kHz input frequency
Flexible power/serial clock speed management
No pipeline delays
High speed serial interface
SPI®/QSPI™/MICROWIRE™/DSP compatible
Power-down mode: 1 μA max
8-lead SOT-23 and MSOP packages

APPLICATIONS
Transducer interface
Battery-powered systems
Data acquisition systems
Portable instrumentation
Motor control

VDD= 2.7 V to 3.6 V, fSCLK= 18 MHz, fS= 1 MSPS, VREF= 2.0 V; VDD= 4.75 V to 5.25 V, fSCLK= 18 MHz, fS= 1 MSPS,VREF= 2.5 V; VCM = VREF; TA= TMIN to TMAX, unless otherwise noted. Temperature range for B Version: –40°C to +85°C.


Datasheet PDF Download :
AD7440 pdf

Others datasheet of same file : AD7440,AD7440BRM,AD7440BRM-REEL7,AD7440BRMZ,AD7440BRT-R2
2015/01/28 13:52 2015/01/28 13:52

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