AD9943 datasheet(5/20 Pages) AD

Il numero della parte	AD9943

Spiegazioni elettronici	Complete 10-Bit and 12-Bit, 25 MHz CCD Signal Processors

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Produttore elettronici	AD [Analog Devices]

Homepage	http://www.analog.com

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AD9943/AD9944

Rev. B | Page 5 of 20

AD9944 SYSTEM SPECIFICATIONS

TMIN to TMAX, AVDD = DVDD = DRVDD = 3 V, fSAMP = 25 MHz, unless otherwise noted.

Table 4.

Parameter

Min

Typ

Max

Unit

Conditions

CDS

Maximum Input Range before Saturation1

1.0

V p-p

Allowable CCD Reset Transient

1

500

mV

See input waveform in footnote.

Maximum CCD Black Pixel Amplitude

1

100

mV

VARIABLE GAIN AMPLIFIER (VGA)

Gain Control Resolution

1024

Steps

Gain Monotonicity

Guaranteed

Gain Range

Minimum Gain

5.3

dB

See Figure 13 for VGA gain curve.

Maximum Gain

40

41.5

dB

See Variable Gain Amplifier section for VGA

gain equation.

BLACK LEVEL CLAMP

Clamp Level Resolution

256

Steps

Clamp Level

Measured at ADC output.

Minimum Clamp Level

0

LSB

Maximum Clamp Level

255

LSB

A/D CONVERTER

Resolution

12

Bits

Differential Nonlinearity (DNL)

±0.4

LSB

No Missing Codes

Guaranteed

Data Output Coding

Straight binary

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

Specifications include entire signal chain.

Gain Range

Low Gain (VGA Code = 0)

5.3

dB

Maximum Gain (VGA Code = 1023)

40

41.5

dB

Gain Accuracy

±1

dB

Peak Nonlinearity 500 mV Input Signal

0.1

%

12 dB gain applied.

Total Output Noise

0.9

LSB rms

AC grounded input, 6 dB gain applied.

Power Supply Rejection (PSR)

50

dB

Measured with step change on supply.

1 Input signal characteristics defined as follows:

100mV TYP

OPTICAL BLACK PIXEL

500mV TYP

RESET TRANSIENT

1V TYP

INPUT SIGNAL RANGE

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