AD9948KCPRL datasheet(3/28 Pages) AD

3 / 28 page

REV. 0

AD9948

–3–

ANALOG SPECIFICATIONS

Parameter

Min

Typ

Max

Unit

Notes

CDS

Gain

Allowable CCD Reset Transient

500

Max Input Range before Saturation

1.0

V p-p

Max CCD Black Pixel Amplitude

±50

PIXEL GAIN AMPLIFIER (PxGA)

Gain Control Resolution

256

Steps

Gain Monotonicity

Min Gain

Max Gain

VARIABLE GAIN AMPLIFIER (VGA)

Max Input Range

1.0

V p-p

Max Output Range

2.0

V p-p

Gain Control Resolution

1024

Steps

Gain Monotonicity

Guaranteed

Gain Range

Min Gain (VGA Code 0)

Max Gain (VGA Code 1023)

BLACK LEVEL CLAMP

Clamp Level Resolution

256

Steps

Clamp Level

Measured at ADC output

Min Clamp Level (0)

LSB

Max Clamp Level (255)

63.75

LSB

A/D CONVERTER

Resolution

Bits

Differential Nonlinearity (DNL)

–1.0

±0.5

+1.0

LSB

No Missing Codes

Guaranteed

Full-Scale Input Voltage

2.0

VOLTAGE REFERENCE

Reference Top Voltage (REFT)

2.0

Reference Bottom Voltage (REFB)

1.0

SYSTEM PERFORMANCE

Specifications include entire

signal chain

VGA Gain Accuracy

Min Gain (Code 0)

5.0

5.5

6.0

Max Gain (Code 1023)

40.5

41.5

42.5

Peak Nonlinearity, 500 mV Input Signal

0.2

12 dB gain applied

Total Output Noise

0.25

LSB rms

AC grounded input, 6 dB

gain applied

Power Supply Rejection (PSR)

Measured with step change

on supply

*Input signal characteristics defined as follows:

50mV MAX

OPTICAL BLACK PIXEL

500mV TYP

RESET TRANSIENT

1V MAX

INPUT SIGNAL RANGE

Specifications subject to change without notice.

(TMIN to TMAX, AVDD = DVDD = 3.0 V, fCLI = 25 MHz, Typical Timing Specifications,

unless otherwise noted.)

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