TLV571

2.7 V TO 5.5 V, 1-CHANNEL, 8-BIT,

PARALLEL ANALOG-TO-DIGITAL CONVERTER

SLAS239A – SEPTEMBER 1999 – REVISED FEBRUARY 2000

17

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range, supply

voltages, and reference voltages (unless otherwise noted)

digital specifications

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Logic inputs

IIH

High-level input current

DVDD = 5 V, DVDD = 3 V, Input = DVDD

–1

1

µA

IIL

Low-level input current

DVDD = 5 V, DVDD = 3 V, Input = 0 V

–1

1

µA

Ci

Input capacitance

10

15

pF

Logic outputs

VOH

High-level output voltage

IOH = 50 µA to 0.5 mA

DVDD– 0.4

V

VOL

Low-level output voltage

IOL = 50 µA to 0.5 mA

0.4

V

IOZ

High-impedance-state output current

DVDD = 5 V, DVDD = 3 V, Input = DVDD

1

µA

IOL

Low-impedance-state output current

DVDD = 5 V, DVDD = 3 V, Input = 0 V

–1

µA

Co

Output capacitance

5

pF

Internal clock

3 V, AVDD = DVDD

9

10

11

MHz

Internal clock

5 V, AVDD = DVDD

18

20

22

MHz

dc specifications

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

8

Bits

Accuracy

Integral nonlinearity, INL

Best fit

±0.3

±0.5

LSB

Differential nonlinearity, DNL

±0.3

±0.5

LSB

Missing codes

0

EO

Offset error

±0.15%

±0.3%

FSR

EG

Gain error

±0.2%

±0.4%

FSR

Analog input

Ci

Input capacitance

AIN, AVDD = 3 V, AVDD = 5 V

15

pF

Ci

Input capacitance

MUX input, AVDD = 3 V, AVDD = 5 V

25

pF

Ilkg

Input leakage current

VAIN = 0 to AVDD

±1

µA

Voltage reference input

ri

Input resistance

2

k

Ω

Ci

Input capacitance

300

pF

Power supply

Operating supply current IDD +IREF

AVDD = DVDD = 3 V, fCLK = 10 MHz

4

5.5

mA

Operating supply current, IDD + IREF

AVDD = DVDD = 5 V, fCLK = 20 MHz

7

8.5

mA

PD

Power dissipation

AVDD+DVDD = 3 V

12

17

mW

PD

Power dissipation

AVDD+DVDD = 5 V

35

43

mW

Software

IDD +IREF

AVDD = 3 V

1

8

µA

IPD

Supply current in power down mode

Software

IDD + IREF

AVDD = 5 V

2

10

µA

IPD

Supply current in power-down mode

Auto

IDD +IREF

AVDD = 3 V

0.5

1

mA

Auto

IDD + IREF

AVDD = 5 V

0.5

1

mA