AD9920A データシートの表示（PDF） - Analog Devices

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AD9920A

12-Bit CCD Signal Processor with V-Driver and Precision Timing Generator

Analog Devices 

AD9920A

Parameter

Test Conditions/Comments

Min

BLACK LEVEL CLAMP

Clamp Level Resolution

Clamp Level

Measured at ADC output

Minimum Clamp Level

Code 0

Maximum Clamp Level

Code 1023

ADC

Resolution

12

Differential Nonlinearity (DNL)2

No Missing Codes

Integral Nonlinearity (INL)2

Full-Scale Input Voltage

VOLTAGE REFERENCE

Reference Top Voltage (REFT)

Reference Bottom Voltage (REFB)

SYSTEM PERFORMANCE

Includes entire signal chain

Gain Accuracy

0 dB CDS gain

Low Gain

VGA Code 15

5.7

Gain = (0.0358 × code) + 5.76 dB

Maximum Gain

VGA Code 1023

41.8

Peak Nonlinearity, 1 V Input Signal2 6 dB VGA gain, 0 dB CDS gain applied

Total Output Noise2

AC-grounded input, 6 dB VGA gain

applied

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.

Typ

Max

1024

0

255

±0.5

Guaranteed

±3.0

2.0

1.4

0.4

6.2

6.7

42.3

42.8

0.1

0.3

0.6

40

800mV

MAXIMUM

500mV TYP

RESET TRANSIENT

200mV MAX

OPTICAL BLACK PIXEL

MAXIMUM INPUT LIMIT = LESSER OF

2.2V OR AVDD + 0.3V

+1.8V TYP (AVDD)

+1.3V TYP (AVDD – 0.5V)

DC RESTORE VOLTAGE

1V MAXIMUM INPUT SIGNAL RANGE

(0dB CDS GAIN)

0V (AVSS)

MINIMUM INPUT LIMIT

(AVSS – 0.3V)

Figure 2. Input Signal Characteristics

Unit

Steps

LSB

LSB

Bits

LSB

LSB

V

V

V

dB

dB

%

LSB rms

dB

Rev. B | Page 6 of 112

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