AD9925BBCZ 查看數據表（PDF） - Analog Devices

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AD9925BBCZ

CCD Signal Processor with Vertical Driver and Precision Timing ™ Generator

Analog Devices 

AD9925

ANALOG SPECIFICATIONS

AVDD1 = 3.0 V, fCLI = 36 MHz, typical timing specifications, TMIN to TMAX, unless otherwise noted.

Table 4.

Parameter

Min

CDS

Allowable CCD Reset Transient

Maximum Input Range before Saturation

0 dB CDS Gain (Default Setting)

−2 dB CDS Gain

−4 dB CDS Gain

Maximum CCD Black Pixel Amplitude

VARIABLE GAIN AMPLIFIER (VGA)

Gain Control Resolution

Gain Monotonicity

Gain Range

Minimum Gain (VGA Code 0)

Maximum Gain (VGA Code 1023)

BLACK LEVEL CLAMP

Clamp Level Resolution

Clamp Level

Minimum Clamp Level (Code 0)

Maximum Clamp Level (Code 255)

ANALOG-TO-DIGITAL CONVERTER (ADC)

Resolution

12

Differential Nonlinearity (DNL)

–1.0

No Missing Codes

Full-Scale Input Voltage

VOLTAGE REFERENCE

Reference Top Voltage (REFT)

Reference Bottom Voltage (REFB)

SYSTEM PERFORMANCE

Gain Accuracy

Low Gain (VGA Code 0)

5.0

Maximum Gain (VGA Code 1023)

40.5

Peak Nonlinearity, 500 mV Input Signal

Total Output Noise

Typ

Max

500

1.0

1.25

1.6

+200/–100

1024

Guaranteed

6

42

256

0

255

±0.5

+1.0

Guaranteed

2.0

2.0

1.0

5.5

6.0

41.5

42.5

0.1

0.8

Unit

mV

V p-p

V p-p

V p-p

mV

Steps

dB

dB

Steps

LSB

LSB

Bits

LSB

V

V

V

dB

dB

%

LSB rms

Power Supply Rejection (PSR)

50

dB

Test Conditions/Comments

Input Characteristics Definition.1

Positive Offset Definition1

Measured at ADC Output.

Includes Entire Signal Chain.

Gain = (0.0351 × Code) + 5.5 dB.

12 dB Gain Applied.

AC Grounded Input, 6 dB Gain Ap-

plied.

Measured with Step Change on

Supply.

1 Input signal characteristics are defined as

500mV TYP

RESET TRANSIENT

+200mV MAX

OPTICAL BLACK PIXEL

INPUT

1V MAX

SIGNAL RANGE

(0dB CDS GAIN)

Rev. A | Page 6 of 96

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