ADS1203_14 datasheet(6/34 Pages) TI1

Part #	ADS1203

Description	16-Bit Resolution 14-Bit Linearity 짹250mV Input Range with Single 5V Supply

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Manufacturer	TI1 [Texas Instruments]

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ADS1203

SBAS318C − JUNE 2004 − REVISED JANUARY 2008

www.ti.com

6

PIN ASSIGNMENTS: PW (TSSOP) PACKAGE

PW PACKAGE

TSSOP-8

(TOP VIEW)

1

2

3

4

8

7

6

5

M0

V

IN+

V

IN−

M1

V

DD

MCLK

MDAT

GND

ADS1203

Terminal Functions: PW (TSSOP) Package

TERMINAL

NAME

NO.

I/O

DESCRIPTION

M0

1

I

Mode input

VIN+

2

I

Noninverting analog input

VIN−

3

I

Inverting analog input

M1

4

I

Mode input

GND

5

Power supply ground

MDAT

6

O

Modulator data output

MCLK

7

I/O

Modulator clock input or output

VDD

8

Power supply: +5V nominal

NOTE: For the TSSOP package, BGND and AGND are internally

connected to the GND pin. Additionally, the AVDD and BVDD

pins are connected to VDD.

PIN ASSIGNMENTS: RGT (QFN) PACKAGE

RGT PACKAGE(1)

QFN-16

(TOP VIEW)

REFIO

V

IN+

V

IN−

NC

BV

DD

MCLK

CLKOUT

MDAT

1

2

3

4

12

11

10

9

ADS1203

(1) The thermal pad is internally connected to the substrate. This pad

can be connected to the analog ground or left floating. Keep the

thermal pad separate from the digital ground, if possible.

Terminal Functions: RGT (QFN) Package

TERMINAL

NAME

NO.

I/O

DESCRIPTION

REFIO

1

I/O

Reference voltage input/output

VIN+

2

I

Noninverting analog input

VIN−

3

I

Inverting analog input

NC

4, 6, 14, 15

I

Not connected

M1

5

I

Mode input

AGND

7

Analog power-supply ground

BGND

8

Interface power-supply ground

MDAT

9

O

Modulator data output

CLKOUT

10

O

Modulator clock output (Mode 3 only)

MCLK

11

I/O

Modulator clock input or output

BVDD

12

Interface power supply

AVDD

13

Analog power supply

M0

16

Mode input

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