3

* This specification are subject to be changed without notice.

EM19101

8-BIT 5 MSPS A/D CONVERTER (CMOS)

4.23.1997

Step

Analog Input (V)

Digital Output Code

Conditions

0

0.607815

00000000

VRB=0.6V

1

0.607815~0.6156250

00000001

VRT=2.6V

2

0.6156250~0.6234375

00000010

1LSB=7.8125mV

....

....

....

124

1.6000000~1.6078125

10000000

125

1.6078125~1.6156250

10000001

....

....

....

254

2.5843750~2.5921875

11111110

255

2.5921875~

11111111

OUTPUT CODING

(F

Parameter

Sym.

Conditions

Min. Typ. Max.

Unit

Maximum Conversion Speed

F

C

Vin=0.6V to 2.6V fin=1kHz ramp

5

MSPS

Supply current

I

DD

F

10

15

mA

Reference pin current

I

REF

5.7

8.0

9.1

mA

Analog input bandwidth

BW

1

MHz

Analog input capacitance

C

IN

V

11

pF

Reference resistance

R

REF

220

250

350

Ω

Internal bias

V

RB

Short V

0.55

0.6

0.65

V

V

RT

-V

RB

Short V

RT

and V

RTS

1.9

2.0

2.1

Offset Voltage

E

OT

-10

-35

-60

mV

E

OB

015

45

Digital input voltage

V

IH

4.0

V

V

IL

1.0

Digital input current

I

IH

V

DD

=max.

V

IH

=V

DD

5uA

I

IL

V

5

Items

Sym.

Rating

Unit

Supply voltage

V

DD

7V

Operating temperature

T

OPR

-20 to +65

°C

Input voltage

V

IN

V

SS

to V

DD

V

Ref, Input voltage

V

V

V

Recommended Poerating Conditions

Items

Sym.

Rating

Unit

Supply voltage

AV

4.75 TO 5.25

V

DV

|DGND-AGND|

0 to 100

mV

Reference input voltage

V

RB

0 and above

V

V

RT

V

V

V

1.0 to 3.0

V

Analog input voltage

V

IN

V

RB

to V

RT

V