AD9898 データシートの表示（PDF） - Analog Devices

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AD9898

CCD Signal Processor with Precision Timing™ Generator

Analog Devices 

AD9898

ANALOG SPECIFICATIONS (AVDD = 3.0 V, fCLI = 20 MHz, TMIN to TMAX, unless otherwise noted.)

Parameter

Min Typ

Max Unit

Comments

CDS

Allowable CCD Reset Transient

Maximum Input Range before Saturation* 1.0

Maximum CCD Black Pixel Amplitude

500

± 100

mV

V p-p

mV

Input Signal Characteristics

VARIABLE GAIN AMPLIFIER (VGA)

Maximum Output Range

2.0

Gain Control Resolution

Gain Monotonicity

Gain Range

Low Gain

Maximum Gain

1024

Guaranteed

6

40

V p-p

Steps

dB

dB

BLACK LEVEL CLAMP

Clamp Level Resolution

Clamp Level

Minimum Clamp Level

Maximum Clamp Level

64

Steps

LSB

LSB is measured at ADC output.

0

LSB

63

LSB

A/D CONVERTER

Resolution

10

Bits

Differential Nonlinearity (DNL)

± 0.5

LSB

No Missing Codes

Guaranteed

Full-Scale Input Voltage

2.0

V

VOLTAGE REFERENCE

Reference Top Voltage (REFT)

2.0

V

Reference Bottom Voltage (REFB)

1.0

V

SYSTEM PERFORMANCE

Gain Accuracy

Low Gain (VGA Code = 20)

5

6

Maximum Gain (VGA Code = 991) 39

40

Peak Nonlinearity, 500 mV Input Signal

0.1

Total Output Noise

0.3

Power Supply Rejection (PSR)

40

Includes entire signal chain

7

dB

Gain = (0.035 × Code) + 5.3 dB

41

dB

%

12 dB gain applied

LSB rms AC grounded input, 6 dB gain applied

dB

Measured with step change on supply

*Input signal characteristics defined as follows:

500mV TYP

RESET

TRANSIENT

100mV MAX

OPTICAL

BLACK PIXEL

1V MAX

INPUT

SIGNAL RANGE

Specifications subject to change without notice.

–4–

REV. 0

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