TLV2544 datasheet(21/39 Pages) TI

21 / 39 page

TLV2544, TLV2548

2.7 V TO 5.5 V, 12-BIT, 200 KSPS, 4/8 CHANNEL, LOW POWER,

SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN

SLAS198A –FEBRUARY 1999– REVISED AUGUST 1999

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

electrical characteristics over recommended operating free-air temperature range, VCC = VREFP = 2.7 V to

5.5 V, SCLK frequency = 20 MHz at 5 V, 15 MHz at 3 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VOH

High level output voltage

VCC = 5.5 V, IOH = –0.2 mA at 30 pF load

2.4

VOH

High-level output voltage

VCC = 2.7 V, IOH = -20 µA at 30 pF load

VCC–0.2

VOL

Low level output voltage

VCC = 5.5 V, IOL = 0.8 mA at 30 pF load

0.4

VOL

Low-level output voltage

VCC = 2.7 V, IOL = 20 µA at 30 pF load

0.1

IOZ

Off-state output current

VO = VCC

2.5

µA

IOZ

O sae ou u cu e

(high-impedance-state)

VO = 0

CS = VCC

–1

-2.5

µA

IIH

High-level input current

VI = VCC

0.005

2.5

µA

IIL

Low-level input current

VI = 0 V

–0.005

2.5

µA

CS at 0 V Ext ref

VCC = 4.5 V to 5.5 V

1.3

ICC

Operating supply current, normal

CS at 0 V, Ext ref

VCC = 2.7 V to 3.3 V

0.95

ICC

O e a

g su

y cu e , o

sampling (short)

CS at 0 V Int ref

VCC = 4.5 V to 5.5 V

CS at 0 V, Int ref

VCC = 2.7 V to 3.3 V

1.6

CS at 0 V Ext ref

VCC = 4.5 V to 5.5 V

1.9

ICC

Operating supply current, extended

CS at 0 V, Ext ref

VCC = 2.7 V to 3.3 V

1.5

ICC

O e a

g su

y cu e , e e ded

sampling

CS at 0 V Int ref

VCC = 4.5 V to 5.5 V

CS at 0 V, Int ref

VCC = 2.7 V to 3.3 V

1.6

Internal reference supply current

CS at 0 V, VCC = 4.5 V to 5.5 V

0.8

Internal reference supply current

VCC = 2.7 V to 3.3 V

0.6

ICC(PD)

Power-down supply current

For all digital inputs,

≤ VI ≤ 0.3 V or VI ≥ VCC– 0.3 V,

SCLK = 0, VCC = 4.5 V to 5.5 V,

Ext clock

0.1

µA

VCC = 2.7 V to 3.3 V, Ext clock

0.1

ICC(AUTOPWDN)

Auto power down current

For all digital inputs,

≤ VI ≤ 0.3 V or VI ≥ VCC– 0.3 V,

SCLK = 0, VCC = 4.5 V to 5.5 V,

Ext clock, Ext ref

1‡

µA

VCC = 2.7 V to 3.3 V,

Ext ref, Ext clock

1§

Selected channel leakage current

Selected channel at VCC

µA

Selected channel leakage current

Selected channel at 0 V

–1

µA

Maximum static analog reference

current into REFP (use external

reference)

VREFP = VCC = 5.5 V, VREFM = GND

µA

Input capacitance

Analog inputs

Input capacitance

Control Inputs

Input MUX ON resistance

VCC = 5.5 V

500

Ω

Input MUX ON resistance

VCC = 2.7 V

600

Ω

† All typical values are at VCC = 5 V, TA = 25°C.

‡ 800

µA if internal reference is used, 165 µA if internal clock is used.

§ 800

µA if internal reference is used, 116 µA if internal clock is used.

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