TLV987

3-V 10-BIT 27 MSPS AREA CCD SENSOR

SIGNAL PROCESSOR

SLAS211A – MARCH 1999 – REVISED SEPTEMBER 1999

6

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range,

reference voltages

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Internal bandgap voltage reference

1.43

1.5

1.58

V

Temperature coefficient

100

ppm/

°C

Voltage reference noise

0.5

LSB

Positive reference voltage, ADC Ref+

Externally decoupled

1.8

2

2.2

V

Negative reference voltage, ADC Ref–

Externally decoupled

0.8

1

1.2

V

digital specifications

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

LOGIC INPUTS

IIH

High-level input current

DIVDD = 3 V

–10

10

µA

IIL

Low-level input current

DIVDD = 3 V

–10

10

µA

Ci

Input capacitance

5

pF

LOGIC OUTPUTS

VOH

High-level output voltage

IOH = 50 µA, DIVDD = 3 V

DIVDD–0.4

V

VOL

Low-level output voltage

IOL = 50 µA, DIVDD = 3 V

0.4

V

IOZ

High-impedance output current

–10

10

µA

C

Output capacitance

5

pF

timing requirements

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tw(SR)

Pulse duration, SR

50% to 50%

10

ns

tw(SV)

Pulse duration, SV

50% to 50%

10

ns

tsu1

Setup time, OBCLP

↓ before ADCCLK ↑

Minimum 0.25

× ADCCLK clock cycle

th2

Hold time, ADCCLK

↓ after OBCLP ↑

td

Delay time, ADCCLK

↓ to ADCOUT valid

4

9

ns

tsu2

Setup time, CS

↓ before SCLK ↑

0

ns

th1

Hold time, SCLK

↓ after CS ↑

5

ns

0

5

10

15

20

25

30

35

40

0

28

56

84

112 140 168 196 224 252 280 308 336 364 392 420 448 476 504

PGA – Gain Code

Figure 1. TLV987 PGA Gain Code vs Gain