ADCS7476 Datasheet, PDF (2/22 Pages) National Semiconductor (TI) – 1MSPS, 12-/10-/8-Bit A/D Converters in 6-Lead SOT-23

Ordering Information
Order Code
ADCS7476AIMF
ADCS7477AIMF
ADCS7478AIMF
ADCS7476AIMFX
ADCS7477AIMFX
ADCS7478AIMFX
Temperature Range
−40˚C to +125˚C
−40˚C to +85˚C
−40˚C to +85˚C
−40˚C to +125˚C
−40˚C to +85˚C
−40˚C to +85˚C
Description
6-Lead, SOT-23 Package
6-Lead, SOT-23 Package
6-Lead, SOT-23 Package
6-Lead SOT-23 Package, Tape & Reel
6-Lead SOT-23 Package, Tape & Reel
6-Lead SOT-23 Package, Tape & Reel
Top Mark
X01A
X02A
X03A
X01A
X02A
X03A
Pin Descriptions
Pin No.
ANALOG I/O
3
DIGITAL I/O
Symbol
V_IN
4
SCLK
5
SDATA
6
CS
POWER SUPPLY
1
V_DD
2
GND
Block Diagram
Description
Analog input. This signal can range from 0V to V_DD.
Digital clock input. The range of frequencies for this input is 10 kHz to 20 MHz, with
guaranteed performance at 20 MHz. This clock directly controls the conversion and readout
processes.
Digital data output. The output words are clocked out of this pin by the SCLK pin.
Chip select. A conversion process begins on the falling edge of CS.
Positive supply pin. These pins should be connected to a quiet +2.7V to +5.25V source and
bypassed to GND with 0.1 µF and 1 µF monolithic capacitors located within 1 cm of the
power pin. The ADCS7476/77/78 uses this power supply as a reference, so it should be
thoroughly bypassed.
The ground return for the supply.
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