AD9843A
Parameter | Min | Typ | Max | Unit | Notes |
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POWER CONSUMPTION |
| 78 |
| mW | See TPC 1 for Power Curves |
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MAXIMUM CLOCK RATE | 20 |
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| MHz |
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CDS |
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Allowable CCD Reset Transient1 |
| 500 |
| mV | See Input Waveform in Note 1 |
Max CCD Black Pixel Amplitude1 |
| 200 |
| mV |
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Max Input Range Before Saturation1 | 1.0 |
|
| V | With 4 dB CDS Gain |
Max Input Range Before Saturation |
| 1.5 |
| V | With |
Max Input Range Before Saturation |
| 0.5 |
| V | With 10 dB CDS Gain |
Max Output Range | 1.6 |
|
| V | At Any CDS Gain Setting |
Gain Resolution |
| 64 |
| Steps |
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Gain Range (Two’s Complement Coding) |
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| See Figure 12 for CDS Gain Curve |
Min Gain (CDS Gain Register Code 32) |
|
| dB |
| |
Medium Gain (CDS Gain Code 63) |
| 4 |
| dB | 4 dB Is Default with CDS Gain Disabled |
Max Gain (CDS Gain Code 31) |
| 10 |
| dB |
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VARIABLE GAIN AMPLIFIER (VGA) |
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Max Input Range | 1.6 |
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| V |
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Max Output Range | 2.0 |
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| V |
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Gain Control Resolution |
| 1024 |
| Steps |
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Gain Monotonicity |
| Guaranteed |
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Gain Range |
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| See Figure 13 for VGA Gain Curve |
Low Gain (VGA Register Code 91) |
| 2 |
| dB | See Page 13 for Gain Equations |
Max Gain (VGA Code 1023) |
| 36 |
| dB |
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BLACK LEVEL CLAMP |
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Clamp Level Resolution |
| 256 |
| Steps |
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Clamp Level |
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| Measured at ADC Output |
Min Clamp Level |
| 0 |
| LSB |
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Max Clamp Level |
| 63.75 |
| LSB |
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SYSTEM PERFORMANCE |
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| Specifications Include Entire Signal Chain |
Gain Accuracy, VGA Code 91 to 1023 |
| +0.5 | dB | Use Equations on Page 13 to Calculate Gain | |
Peak Nonlinearity, 500 mV Input Signal |
| 0.1 |
| % | 12 dB Gain Applied (4 dB CDS Gain) |
Peak Nonlinearity, 800 mV Input Signal |
| 0.4 |
| % | 8 dB Gain Applied (4 dB CDS Gain) |
Total Output Noise |
| 0.2 |
| LSB rms | AC Grounded Input, 6 dB Gain Applied |
Power Supply Rejection (PSR) |
| 40 |
| dB | Measured with Step Change on Supply |
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| Clocks Must Be Applied, as in Figures 5 and 6 | |
From Fast Recovery Mode |
| 0.1 |
| ms |
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From Reference Standby Mode |
| 1 |
| ms |
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From Total Shutdown Mode |
| 3 |
| ms |
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From |
| 15 |
| ms |
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NOTES
1Input Signal Characteristics defined as follows, with 4 dB CDS gain:
500mV TYP |
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RESET |
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TRANSIENT | 1V MAX | |
200mV MAX | ||
INPUT | ||
OPTICAL | SIGNAL RANGE | |
BLACK PIXEL |
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Specifications subject to change without notice.
REV. 0 |