AD9942BBCZ datasheet(5/36 Pages) AD

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AD9942

Rev. A | Page 5 of 36

ANALOG SPECIFICATIONS

TMIN to TMAX, AVDD_X = DVDD_X = 3.0 V, fCLI = 40 MHz, typical timing specifications, unless otherwise noted. X = A, B.

Table 3.

Parameter

Min

Typ

Max

Unit

Notes

CDS

Gain

Allowable CCD Reset Transient1

500

Max Input Range Before Saturation

1.0

V p-p

Max CCD Black Pixel Amplitude

±100

Measured at 12 dB VGA gain

(Typ = 70 mV at 15 dB and 50 mV at 18 dB)

VARIABLE GAIN AMPLIFIER (VGA_X)

Max Input Range

1.0

V p-p

Max Output Range

2.0

V p-p

Gain Control Resolution

512

Steps

Gain Monotonicity

Guaranteed

Gain Range

Min Gain (Code 0)

Max Gain (Code 511)

CLPOB

Clamp Level Resolution

256

Steps

4 LSB/step

Clamp Level

Measured at ADC output

Min Clamp Level

LSB

Max Clamp Level

1023

LSB

CHN_A AND CHN_B ADC

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_X)

2.0

Reference Bottom Voltage (REFB_X)

1.0

SYSTEM PERFORMANCE

Specifications include entire signal chain

VGA Gain Accuracy

Min Gain (Code 0)

−0.5

+0.5

Max Gain (Code 511)

17.5

18.5

Peak Nonlinearity, 500 mV Input Signal

0.15

12 dB gain applied

Total Output Noise

LSB rms

AC grounded input, 6 dB gain applied

Power Supply Rejection (PSR)

Measured with step change on supply

1 Input signal characteristics defined as follows:

100mV MAX

OPTICAL BLACK PIXEL

500mV TYP

RESET TRANSIENT

1V MAX

INPUT SIGNAL RANGE

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