IOZ

ADC0834A, ADC0838A, ADC0834B, ADC0838B

A/D PERIPHERALS WITH SERIAL CONTROL

SLAS007 – AUGUST 1985 – REVISED OCTOBER 1986

POST OFFICE BOX 655303

7

recommended operating conditions

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

6.3

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

fclock

Clock frequency

10

400

kHz

Clock duty cycle (see Note 3)

40

60

%

twH(CS) Pulse duration, CS high

220

ns

tsu

Setup time, CS low, SE low, or data valid before clock

↑

350

ns

th

Hold time, data valid after clock

↑

90

ns

TA

Operating free-air temperature

AC and BC suffixes

0

70

°C

TA

O erating free-air tem erature

AI and BI suffixes

–40

85

°C

NOTE 3: The clock duty cycle range ensures proper operation at all clock frequencies. If a clock frequency is used outside the recommended

duty cycle range, the minimum pulse duration (high or low) is 1

µs.

electrical

characteristics

over

recommended

range

of

operating

free-air

temperature,

digital section

PARAMETER

TEST CONDITIONS†

AC, BC SUFFIX

AI, BI SUFFIX

UNIT

PARAMETER

TEST CONDITIONS†

MIN

TYP‡

MAX

MIN

TYP‡

MAX

UNIT

VOH

High levl output voltage

VCC = 4.75 V,

IOH = – 360 µA

2.8

2.4

V

VOH

High-levl output voltage

VCC = 4.75 V,

IOH = – 10 µA

4.6

4.5

V

VOL

Low-levl output voltage

VCC = 5.25 V,

IOH = 1.6 mA

0.34

0.4

V

IIH

High-level input current

VIH = 5 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

VOH = 0,

TA = 25°C

– 6.5

–14

– 6.5

–14

mA

IOL

Low-level output (sink) current

VOL = VCC,TA = 25°C

8

16

8

16

mA

High-impedance-state output

VO = 5 V,

TA = 25°C

0.01

3

0.01

3

µA

g

current (DO or SARS)

VO = 0,

TA = 25°C

– 0.01

–3

– 0.01

–3

µA

Ci

Input capacitance

5

pF

Co

Output capacitance

5

pF

† All parameters are measured under open-loop conditions with zero common-mode input voltage (unless otherwise specified).

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