Ai4402

Ver1.0
A1 PROs
1
A1 PROs
Ai4402
Signal Processor for CCD Monochrome Camera
Description
The Ai4402 is designed to perform the basic signal processing in CCD monochrome camera through a single chip. This bipolar IC is most suitable for compact usage and low power consumption.
§ Ñ
Operating Conditions
Symbol Vcc Parameter Supply Voltage Rating 4.75 ~ 5.25 Unit V
Block Diagram
CLP2
25
SHP
24 S/H
SHD1
21 S/H S/H
AGC AGC AGC ¥ ã ¥ ã LP IN C MAX CONT OUT
21
Input pin of the sample hold pulse (active at HI)
• ‚
150§ Ë
22
DATA • MAX 800mV ‚ MAX 800mV
22
CCD signal input pin
150§ Ë • ‚
23
23
PG • MAX 800mV ‚ MAX 800mV
20§ Ë 150¥ Ø
14
AGC MAX
* DC
14
Maximum gain setting pin of AGC amplifier
15
Vcc1
*5V
Power supply for other than driver and IRIS *External applied voltage
4
Ai4402
3
Ai4402
Ngnal
Equivalent circuit
Description
150¥ Ø
11
11
¥ã IN
Input DC permissible range *DC2 to 3V
80§ Ë
160§ Ë
Input pin of the gamma compensation circuit
T 40 § Ë 150¥ Ø
29
BLK
29
* HI : 4.5V and above LO : 0.5V and below T : 11 § Á
BLK pulse input pin (active at LO)
*External applied voltage
7
Ai4402
NO.
Symbol
6
Ai4402
NO.
Symbol
I/O signal
T
Equivalent circuit
Description
100§ Ë 150¥ Ø
25
CLP2
* HI : 4.5V and above LO : 0.5V and below T:2§ Á
25
CLP2 pulse input pin (active at HI)
5
Turns to preset mode 1
150¥ Ø
Control mode
40 § Ë
* Vcc
Turns to preset mode 2 White clip level adjusting pin
150¥ Ø
6
WC CONT
* GND
6
Preset mode
40§ Ë
* 2 to 3.5V
PG
CLP2 GND3 IRIS IRIS CLP BLK CLP1 Vcc2 VIDEO
Feature
• Processing from CCD output to 75¥ Ø video output with a single chip • Wide variable AGC (1 to 32 dB Typ.) • Built-in operational amplifier for AGC loop • 75¥ Ø line capacitance minimized using sag compensation function • Variable white clip level realize wide dynamic range (140 IRE) • 32pin TQFP
*External applied voltage
5
Ai4402
NO.
20
Symbol
NC
I/O signal
Equivalent circuit
Description
T 100§ Ë 150¥ Ø
21
SHD * HI : 4.5V and above LO : 0.5V and below T : 15ns and above
CCD signal input pin
T 150¥ Ø
100§ Ë
24
24
SHP * HI : 4.5V and above LO : 0.5V and below T : 15ns
Input pin of the sample hold pulse (active at HI)
*External applied voltage
Ai4402
Application
CCD monochrome camera
32 PIN TQFP
(Top view)
Absolute Maximum Ratings (Ta = 25 ¡ É )
Symbol Vcc TSTG TOPR PD Parameter Supply Voltage Storage Temperature Operating Temperature Allowable Power Dissipation Rating 7 -65 ~ +150 -20 ~ +75 500 Unit V ¡ É ¡ É
700§ Ë
12
12
AGC OUT Vpp MAX 1300mV Vpp TYP 500mV DC 2.55V
Output pin of signal passed through AGC
13
DET OUT MAX 1500mV TYP 500mV DC 2V
320§ Ë
13
Output pin of AGC detection signal
No. Symbol 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Icc MAX AG1 AG2 AG3 ADC ¥ã 1 ¥ã 2 LG DDC IG IDC DG SY DC1 DC2 DC3 DC4 WC1 WC2 WC3 OPL OPH Item Current consumption Min. value of AGC MAX Min. value of AGC CONT Max. value of AGC CONT AGC CONT 10dB AGC OUT DC ¥ ã output level 1 ¥ ã output level 2 LINEAR AMP GAIN DET OUT DC IRIS AMP GAIN IRIS OUT DC DRIVER GAIN SYNC level Dark clip 1 Dark clip 2 Min. value of DC CONT Max. value of DC CONT W-CLIP level Min. value of WC CONT Max. value of WC CONT OP AMP output D range Low level OP AMP output D range High level Conditions Current value of Vcc1 and Vcc2 AGC CONT = 1.5V GAIN between DATA input and AGC OUT DATA input = 100mV AGC MAX = 4V, AGC CONT = 1.5V GAIN between DATA input and AGC OUT DATA input = 500mV, AGC CONT = 5V GAIN between DATA input and AGC OUT DATA input = 30mV, AGC CONT =1.5V GAIN between DATA input and AGC OUT DATA input = 320mV, AGC CONT =3.55V DC output level of AGC OUT Test value of ¥ ã output level 1 ¥ ã input = 500mV IN Test value of ¥ ã output level 2 ¥ ã input = 500mV, S9 ON IN GAIN between ¥ ã input level and LINEAR IN ¥ ã input = 500mV IN DC output level of DET OUT GAIN between DATA input and IRIS DATA input = 300mV DC output level of IRIS GAIN between DRIVER IN and VIDEO DRIVER IN = 700mV SYNC level / DG* of VIDEO output Min Typ Max Unit 45 30 8 50 18 1 32 10 65 20 4 12 mA dB dB dB dB V