AD9992BBCZ datasheet(5/92 Pages) AD

5 / 92 page

AD9992

Rev. C | Page 5 of 92

ANALOG SPECIFICATIONS

AVDD = 1.8 V, fCLI = 40 MHz, typical timing specifications, TMIN to TMAX, unless otherwise noted.

Table 3.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

CDS

Allowable CCD Reset Transient

0.5

0.8

The limit is the lower of AVDD + 0.2 V or 2.2 V.

CDS Gain Accuracy

VGA gain = 6.3 dB (Code 15, default value).

−3.0 dB CDS Gain

−3.3

−2.8

−2.3

0 dB CDS Gain

−0.5

+0.5

+3 dB CDS Gain

2.4

2.9

3.4

+6 dB CDS Gain

5.0

5.5

6.0

Maximum Input Range Before Saturation

VGA gain = 6.3 dB (Code 15, default value).

−3 dB CDS Gain

1.4

V p-p

0 dB CDS Gain

1.0

V p-p

+3 dB CDS Gain

0.7

V p-p

+6 dB CDS Gain

0.5

V p-p

Allowable OB Pixel Amplitude (See

Figure 2)

0 dB CDS Gain (Default)

−100

+200

+6 dB CDS Gain

−50

+100

VARIABLE GAIN AMPLIFIER (VGA)

Gain Control Resolution

1024

Steps

Gain Monotonicity

Guaranteed

Gain Range

Low Gain (VGA Code 15, Default)

6.3

Maximum Gain (VGA Code 1023)

42.4

BLACK LEVEL CLAMP

Clamp Level Resolution

1024

Steps

Clamp Level

Measured at ADC output.

Minimum Clamp Level (Code 0)

LSB

Maximum Clamp Level (Code 1023)

255

LSB

ADC

Resolution

Bits

Differential Nonlinearity (DNL)

−1.0

±0.5

+1.0

LSB

No Missing Codes

Guaranteed

Integral Nonlinearity (INL)

LSB

Full-Scale Input Voltage

2.0

VOLTAGE REFERENCE

Reference Top Voltage (REFT)

1.4

Reference Bottom Voltage (REFB)

0.4

SYSTEM PERFORMANCE

Includes entire signal chain.

Gain Accuracy

0 dB CDS gain.

Low Gain (VGA Code 15)

5.8

6.3

6.8

Gain = (0.0358 × Code) + 5.76 dB.

Maximum Gain (VGA Code 1023)

41.9

42.4

42.9

Peak Nonlinearity, 1.0 V Input Signal

0.1

0.2

6 dB VGA gain, 0 dB CDS gain applied.

Total Output Noise

0.5

LSB rms

AC-grounded input, 6 dB VGA gain applied.

Power Supply Rejection (PSR)

Measured with step change on supply.

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