TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M

LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS

WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS

SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999

13

POST OFFICE BOX 655303

11-to-1

Analog

MUX

Input

Data

Register

2-to-1

Sample-

and-

Hold

Function

SAR† Latch

Threshold

Detect

10-to-1 Select

Output Shift Clock

Conversion

Clock

OSC

Invert

2-to-1

If_mode

Input Shift Clock

DSP§

SMCLK

Control

State

Machine

If_mode

If_mode

Invert

EOC

DATA OUT

INV CLK

CS

FS

I/O CLK

REF+

REF–

A0–A7

TEST 0–2

DATA IN

Vref

REF+

REF–

Microprocessor‡

† Successive approximation register

‡ If_mode = 1, microprocessor interface mode

§ If_mode = 0, DSP interface mode

Figure 5. Clock Scheme

– 0.5 V to 6.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

– 0.1 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±20 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Peak total input current (all inputs)

– 30 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0

°C to 70°C

. . . . . . . . . . . . . . . . . . . . . . . .

TLV1544I, TLV1548I

– 40

°C to 85°C

. . . . . . . . . . . . . . . . . . . . . . . .

TLV1548M

– 55

°C to 125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from the case for 10 seconds

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values are with respect to GND with REF – and GND wired together (unless otherwise noted).