AD9920ABBCZ datasheet(6/112 Pages) AD

6 / 112 page

AD9920A

Rev. B | Page 6 of 112

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

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)2

±0.5

LSB

No Missing Codes

Guaranteed

Integral Nonlinearity (INL)2

±3.0

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

Gain = (0.0358 × code) + 5.76 dB

5.7

6.2

6.7

Maximum Gain

VGA Code 1023

41.8

42.3

42.8

Peak Nonlinearity, 1 V Input Signal2

6 dB VGA gain, 0 dB CDS gain applied

0.1

0.3

Total Output Noise2

AC-grounded input, 6 dB VGA gain

applied

0.6

LSB rms

Power Supply Rejection (PSR)2

Measured with step change on supply

1 Input signal characteristics are defined as shown in Figure 2.

2 See the Terminology section.

800mV

MAXIMUM

MINIMUM INPUT LIMIT

(AVSS – 0.3V)

0V (AVSS)

1V MAXIMUM INPUT SIGNAL RANGE

(0dB CDS GAIN)

+1.3V TYP (AVDD – 0.5V)

DC RESTORE VOLTAGE

+1.8V TYP (AVDD)

MAXIMUM INPUT LIMIT = LESSER OF

2.2V OR AVDD + 0.3V

200mV MAX

OPTICAL BLACK PIXEL

500mV TYP

RESET TRANSIENT

Figure 2. Input Signal Characteristics

AD9920ABBCZ Datasheet(PDF) 6 Page - Analog Devices

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