Datasheet

REV. 0
–3–
AD9824
Parameter Min Typ Max Unit Notes
P OWER CONSUMPTION 153 mW See TPC 1 for Power Curves
MAXIMUM CLOCK RATE 30 MHz
CDS
Gain 0 dB
Allowable CCD Reset Transient
1
500 mV See Input Waveform in Footnote 1
Max Input Range Before Saturation
1
1.0 V p-p PxGA Gain at 4 dB
Max CCD Black Pixel Amplitude
1
200 mV
PIXEL GAIN AMPLIFIER (PxGA)
Max Input Range 1.0 V p-p
Max Output Range 1.6 V p-p
Gain Control Resolution 64 Steps
Gain Monotonicity Guaranteed
Gain Range (Two’s Complement Coding) See Figure 28 for PxGA
Gain Curve
Min Gain (PxGA Gain Code 32) –2.5 dB
Max Gain (PxGA Gain Code 31) 9.5 dB
VARIABLE GAIN AMPLIFIER (VGA)
Max Input Range 1.6 V p-p
Max Output Range 2.0 V p-p
Gain Control Resolution 1024 Steps
Gain Monotonicity Guaranteed
Gain Range See Figure 29 for VGA Gain Curve
Low Gain (VGA Gain Code 77) 2 dB
Max Gain (VGA Gain Code 1023) 36 dB
BLACK LEVEL CLAMP
Clamp Level Resolution 256 Steps
Clamp Level Measured at ADC Output
Min Clamp Level 0 LSB
Max Clamp Level 1020 LSB
SYSTEM PERFORMANCE Specifications Include Entire Signal Chain
Gain Accuracy
2
Gain = (0.0353 × Code) +3.3
Low Gain (VGA Code 77) 5.5 6 6.5 dB
Max Gain (VGA Code 1023) 38.2 39.4 40.2 dB
Peak Nonlinearity, 500 mV Input Signal 0.1 % 12 dB Gain Applied
Total Output Noise 2.0 LSB rms AC Grounded Input, 6 dB Gain Applied
Power Supply Rejection (PSR) 40 dB Measured with Step Change on Supply
POWER-UP RECOVERY TIME Normal Clock Signals Applied
Reference Standby Mode 1 ms
Total Shutdown Mode 3 ms
Power-Off Condition 15 ms
NOTES
1
Input signal characteristics defined as follows:
200mV MAX
OPTICAL BLACK PIXEL
500mV TYP
RESET TRANSIENT
1V MAX
INPUT SIGNAL RANGE
2
PxGA gain fixed at Code 63 (3.3 dB).
Specifications subject to change without notice.
CCD-MODE SPECIFICATIONS
(T
MIN
to T
MAX
, AVDD = DVDD = 3.0 V, f
DATACLK
= f
SHP
= f
SHD
= 30 MHz, unless otherwise noted.)