TLV1544CPWR datasheet(17/38 Pages) TI2

17 / 38 page

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

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

operating characteristics over recommended operating free-air temperature range,

VCC = Vref+ = 2.7 V to 5.5 V, I/O CLK frequency = 2.2 MHz (unless otherwise noted) (continued)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

td(I/O-DATA) Delay time, I/O CLK low to DATA OUT valid

See Figure 11

td(I/O-EOC)

Delay time, 10th I/O CLK

↓ to EOC low

See Figure 12

240

tPZH, tPZL

Enable time, CS low to DATA OUT valid (MSB driven)

See Figure 8

0.7

1.3

µs

tPHZ, tPLZ

Disable time, CS high to DATA OUT invalid (high impedance)

See Figure 8

150

tf(EOC)

Fall time, EOC

See Figure 12

tr(bus)

Rise time, output data bus at 2.2 MHz I/O CLK

See Figure 11

250

tf(bus)

Fall time, output data bus at 2.2 MHz I/O CLK

See Figure 11

250

† All typical values are at TA = 25°C.

PARAMETER MEASUREMENT INFORMATION

0.1

µF

15 V

– 15 V

TLV1544/48

µF

0.1

µF

LOCATION

DESCRIPTION

OP27

10-

µF 35-V tantalum capacitor

0.1-

µF ceramic NPO SMD capacitor

PART NUMBER

—

AVX 12105C104KA105 or equivalent

EOC

Figure 6. Analog Input Buffer to Analog Inputs

EOC

CL = 50 pF

12 k

Ω

DATA OUT

Test Point

VCC

RL = 2.18 kΩ

CL = 100 pF

12 k

Ω

Test Point

VCC

RL = 2.18 kΩ

Figure 7. Load Circuits

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