VSP5000

SLES057 – DECEMBER 2002

www.ti.com

3

ELECTRICAL CHARACTERISTICS (CONTINUED)

all specifications at TA = 25°C, all power supply voltages = 3.3 V, and conversion rate (fADCCK) = 30 MHz (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VSP5000

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ANALOG INPUT (CCDIN)

Input signal level for full-scale output

DPGA gain = 0 dB

1400

mV

Allowable feed-through level

1

V

Input capacitance

15

pF

Input limit

–0.3

3.3

V

TRANSFER CHARACTERISTICS

DNL

Differential nonlinearity

CDS mode, DPGA gain = 0 dB

±0.5

±1

LSB

DNL

Differential nonlinearity

SH mode, DPGA gain = 0 dB

±0.5

±1

LSB

INL

Integral nonlinearity

CDS mode, DPGA gain = 0 dB

±2

±4

LSB

INL

Integral nonlinearity

SH mode, DPGA gain = 0 dB

±4

LSB

No missing codes

DPGA gain = 0 dB

Assured

Step input settling time

Full-scale step input

1

pixel

Overload recovery time

Step input from 2 V to 0 V

2

pixels

Data latency

9 (fixed)

Clock

Cycles

Signal to noise ratio(1)

DPGA gain = 0 dB

78

dB

Signal-to-noise ratio(1)

DPGA gain = 24 dB

54

dB

Channel mismatch

±3%

CORRELATED DOUBLE SAMPLER (CDS)

Reference level sample settling time

Within 1 LSB, driver impedance = 50

Ω

8.3

ns

Data level sample settling time

Within 1 LSB, driver impedance = 50

Ω

8.3

ns

INPUT CLAMP

Clamp-on resistance

400

Ω

Clamp level

1.5

V

OPTICAL BLACK CLAMP LOOP

CCD offset correction range

–300

300

mV

DAC resolution

10

Bits

Minimum DAC output current

COB pin

±0.15

µA

Maximum DAC output current

COB pin

±153

µA

Loop time constant

CCOB = 0.1 µF

40.7

µs

Slew rate

CCOB = 0.1 µF, at current DAC full scale

output

1530

V/s

Oti

l bl

k l

l

l

Program range

0

510

LSB

Optical black clamp level

OB clamp code = 0101 0000

160

LSB

REFERENCE

Positive reference voltage

1.85

V

Negative reference voltage

1.1

V

DIGITAL PROGRAMMABLE GAIN AMPLIFIER (DPGA)

Gain program resolution

10

Bits

Gain code = 11 1111 1111

24 dB

16

Gain

Gain code = 10 0000 0000

18 dB

8

V/V

Gain

Gain code = 00 0100 0000

0 dB

1

V/V

Gain code = 00 0000 0000

–

0

Gain error

±0.5

dB

(1) SNR = 20 log (16384 / output rms noise in LSB), input connected to ground through a capacitor.