TLV0831C, TLV0831I

TLV0832C, TLV0832I

3VOLT 8BIT ANALOGTODIGITAL CONVERTERS WITH SERIAL CONTROL

SLAS148 − SEPTEMBER 1996

6

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251−1443

electrical characteristics over recommended range of operating free-air temperature, VCC = 3.3 V,

f(CLK) = 250 kHz (unless otherwise noted)

digital section

PARAMETER

TEST CONDITIONS†

C SUFFIX

I SUFFIX

UNIT

PARAMETER

TEST CONDITIONS†

MIN

TYP‡

MAX

MIN

TYP‡

MAX

UNIT

VOH

High-level output voltage

VCC = 3 V,

IOH = − 360 µA

2.8

2.4

V

VOH

High-level output voltage

VCC = 3 V,

IOH = − 10 µA

2.9

2.8

V

VOL

Low-level output voltage

VCC = 3 V,

IOL = 1.6 mA

0.34

0.4

V

IIH

High-level input current

VIH = 3.6 V

0.005

1

0.005

1

µA

IIL

Low-level input current

VIL = 0

− 0.005

−1

− 0.005

−1

µA

IOH

High-level output

(source) current

At VOH, DO= 0 V, TA = 25°C

− 6.5

−15

− 6.5

−15

mA

IOL

Low-level output (sink) current

At VOL, DO= 0 V,

TA = 25°C

8

−16

8

−16

mA

IOZ

High-impedance-state output

VO = 3.3 V,

TA = 25°C

0.01

3

0.01

3

A

IOZ

High-impedance-state output

current (DO)

VO = 0,

TA = 25°C

− 0.01

−3

− 0.01

−3

µA

Ci

Input capacitance

5

5

pF

Co

Output capacitance

5

5

pF

† All parameters are measured under open-loop conditions with zero common-mode input voltage.

‡ All typical values are at VCC = 3.3 V, TA = 25°C.

analog and converter section

PARAMETER

TEST CONDITIONS†

MIN

TYP‡

MAX

UNIT

VIC

Common-mode input voltage

See Note 3

− 0.05

to

VCC+ 0.05

V

On channel

VI = 3.3 V

1

II(stdby)

Standby input current (see Note 4)

Off channel

VI = 0

−1

A

II(stdby)

Standby input current (see Note 4)

On channel

VI = 0

−1

µA

Off channel

VI = 3.3 V

1

ri(REF)

Input resistance to REF

1.3

2.4

5.9

k

Ω

† All parameters are measured under open-loop conditions with zero common-mode input voltage.

‡ All typical values are at VCC = 3.3 V, TA = 25°C.

NOTES:

3. When channel IN− is more positive than channel IN+, the digital output code is 0000 0000. Connected to each analog input are two

on-chip diodes that conduct forward current for analog input voltages one diode drop above VCC. Care must be taken during testing

at low VCC levels (3 V) because high-level analog input voltage (3.6 V) can, especially at high temperatures, cause the input diode

to conduct and cause errors for analog inputs that are near full scale. As long as the analog voltage does not exceed the supply

voltage by more than 50 mV, the output code is correct. To achieve an absolute 0- to 3.3-V input range requires a minimum VCC of

3.25 V for all variations of temperature and load.

4. Standby input currents go in or out of the on or off channels when the A/D converter is not performing conversion and the clock is

in a high or low steady-state conditions.

total device

PARAMETER

MIN

TYP‡

MAX

UNIT

ICC

Supply current

TLV0831

0.2

0.75

mA

ICC

Supply current

TLV0832

1.5

2.5

mA

‡ All typical values are at VCC = 3.3 V, TA = 25°C.