AD7951 Analog Devices, AD7951 Datasheet - Page 11

• Manufacturer Part Number: AD7951
• Manufacturer: Analog Devices

Specifications of AD7951

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 1MSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: Bip 10V,Bip 5.0V,Uni 10V,Uni 5.0V
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

Pin No.
45
46
47
48
1
2
Hardware Configuration section and Software Configuration section.
AI = analog input; AI/O = bidirectional analog; AO = analog output; DI = digital input; DI/O = bidirectional digital; DO = digital output; P = power.
In serial configuration mode (SER/ PAR = high, HW/ SW = low), this input is programmed with the serial configuration register and this pin is a don’t care. See the
Mnemonic
TEMP
REFBUFIN
PDREF
PDBUF
Type
AO
AI
DI
DI
1
Description
Temperature Sensor Analog Output. Enabled when the internal reference is turned on
(PDREF = PDBUF = low). See the Temperature Sensor section.
Reference Buffer Input. When using an external reference with the internal reference buffer
(PDBUF = low, PDREF = high), applying 2.5 V on this pin produces 5 V on the REF pin.
See the Voltage Reference Input section.
Internal Reference Power-Down Input.
When low, the internal reference is enabled.
When high, the internal reference is powered down, and an external reference must be used.
Internal Reference Buffer Power-Down Input.
When low, the buffer is enabled (must be low when using internal reference).
When high, the buffer is powered-down.
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AD7951