ICs for Video Camera AN2108NFHQ
AN2108NFHQ
Camera Signal Processing(CDS + AGC + Gamma)
■ Overview
The AN2108NFHQ is a single-chip IC that processes
video-signal of CCD-camera and has functions of CDS,
AGC, pre-knee and pre-aperture circuits. This CDS circuit is capable of high speed sampling of max. 30 MHz to
support high-resolution CCD-camera systems (XGA,
SXGA, etc.). AGC and OB level(black level) adjustments can be controlled with on-chip 8-bit DAC.
■ Features
• Capable of high speed sampling of max. 30 MHz
• Capable of controlling OB level at the last output stage
• Capable of switching between 2 modes of pre-knee
characteristic
• On-chip DAC(8-it, 15-channel)for adjustment
(11-channels for internal and external outputs)
■ Applications
• Digital still cameras, Camcorders, PC cameras, Moni-
toring cameras, CCD camera modules, CCD digital
camera systems
36 25
37
1
(0.75)
9.00±0.40
7.00±0.20
12
0.50
0.20
SEATING PLANE
LQFP048-P-0707
+0.10
–0.05
24
(0.75)
1348
(0.625)(0.625)
9.00±0.40
7.00±0.20
5
0
.0
.1
0
0
–
+
1.70 max.
1.40±0.10
0.15
( ) : Reference value
0.10±0.10
Unit : mm
(1.00)
0 to 10˚
0.50±0.20
1
AN2108NFHQ ICs for Video Camera
■ Block Diagram
DS1
GND1
CCD Out In
V
CC3
DAC ch.6 Out
GND3
DAC ch.7 Out
CC1
DS2
36
V
34
35
Mode SW
32
33
31
30
ch.5
37
9 dB
38
39
40
V
41
42
BIAS
REFMH
2.75V
S/H
S/H
560 Ω
GC
ch.2
Knee Con.
γ
3dB
DL
43
PBLK In
27
29
28
ch.5
26
Test P.Sepa.
GC
DC Cont.
ch.1
ch.3
44
DC Cont.
45
46
47
V
REFH
3.0V
48
V
REFB
1.0V
1
V
DD
2
3
4
5
Serial Control
15-ch DAC
6
7
8
9
10
11
V
1.8V
GC
ch.5
REFM
CC2
V
25
24
23
22
21
20
19
18
17
16
15
14
13
12
CPOB In
GND2
A/D Out
OB Control
DAC ch.4 Out
DAC ch.13 Out
DAC ch.14 Out
DI
SCLK
LOAD
DAC ch.8 Out
DAC ch.1 Out
(UN-Buffer)
DAC ch.9 Out
DAC ch.12 Out
DAC ch.10 Out
DAC ch.11 Out
DAC ch.15 Out
2
ICs for Video Camera AN2108NFHQ
■ Pin Descriptions
Pin No. Description
1 DAC CH1 OUT(UN-Buffer)
2V
3V
OUT(3.5 V)
DD
SS
4DI
5 SCLK
6 LOAD
7 DAC ch.8 OUT
8 DAC ch.9 OUT
9 DAC ch.12 OUT
10 DAC ch.10 OUT
11 DAC ch.11 OUT
12 DAC ch.15 OUT
13 DAC ch.14 OUT
14 DAC ch.13 OUT
15 DAC ch.4 OUT
16 OB Control
17 A/D OUT
18 Sub Amp. DET
19 Sub Amp. IN
20 Pre-aperture OUT
21 V
OUT(1.8 V)
REFM
22 Gamma IN
23 GND 2
24 CPOB IN
Pin No. Description
25 V
CC2
26 AGC OUT 1
27 AGC OUT 2
28 PBLK IN
29 AGC DET
30 AGC IN
31 Trap OUT
32 Gamma MODE SW
33 AGC REF OUT
34 CDS OUT
35 V
CC2
36 Sampling Puls DS2 IN
37 Sampling Puls DS1 IN
38 GND 1
39 CCD OUT IN
40 V
REFMH
OUT(2.7 V)
41 Gamma OUT
42 Pre-aperture DL IN
43 V
CC3
44 DAC ch.6 OUT
45 GND 3
46 DAC ch.7 OUT
47 V
48 V
OUT(3.0 V)
REFH
OUT(1.0 V)
REFB
3
AN2108NFHQ ICs for Video Camera
■ Absolute Maximum Ratings
Parameter Symbol Rating Unit
Supply voltage V
Supply current I
2
Power dissipation
Operating ambient temperature
Storage temperature
Note) *1:Ta = 25 °C, except storage temperature and operating ambient temperature.
*2: The above power dissipation shows the package power dissipation at Ta = 75 °C, in free-air.
*
1
*
1
*
CC
CC
P
D
T
opr
T
stg
■ Recommended Operating Range
Parameter Symbol Range Unit
Supply voltage V
CC
■ Electrical Caracteristics at VCC = 4.8 V, Ta = 25 ± 2 °C
Parameter Symbol Conditions Min Typ Max Unit
Circuit current I
Reference voltage 1 V
Reference voltage 2 V
Reference voltage 3 V
Reference voltage 4 V
Reference voltage 5 V
Pulse separation CPOB VCC = 4.8 V 1.1 1.4 1.7 V
Sampling pulse threshold 1 V
Sampling pulse threshold 2 V
AGC frequency characteristic G
AGC level adjustment V
AGC output D-range V
AGC min. gain G
AGC max. gain G
Test signal adjustment V
Gamma frequency G
characteristic
Gamma characteristic 1 V
Gamma characteristic 2 V
Gamma characteristic 3 V
VCC = 4.8 V 30 40 50 mA
TOT
VCC = 4.8 V 3.3 3.6 3.9 V
REF1
VCC = 4.8 V 2.9 3.0 3.1 V
REF2
VCC = 4.8 V 2.65 2.75 2.85 V
REF3
VCC = 4.8 V 1.7 1.8 1.9 V
REF4
VCC = 4.8 V 0.9 1.0 1.1 V
REF5
VCC = 4.8 V 1.15 1.45 1.75 V
TH1
VCC = 4.8 V 1.15 1.45 1.75 V
TH2
10 MHz Sine wave 300 mV
FA
10 stair step 300 mV
ADJ1
10 stair step 1.2 V
AG3
10 stair step 1.2 V
AG4
10 stair step 50 mV
AG5
PBLK input C0 CE DF Hex
TE
10 MHz Sine wave 300 mV
FG
10 stair step 600 mVPP 3rd stage Pin32 = GND
GM1
10 stair step 600 mVPP 6th stage Pin32 = GND
GM2
10 stair step 600 mVPP 9th stage Pin32 = GND
GM
PP
PP
PP
PP
5.5 V
mA
226 mW
−20 to +7.5 °C
−55 to +125 °C
4.5 to 5.1 V
PP
−1.8 − 0.4 1.0 dB
46 60 7A Hex
1080 1200 1320 mV
−3 −5dB
21 24 dB
PP
−2.2 −1.0 0.2 dB
162 180 198 mV
−1.0 0 1.0 dB
30 80 130 mV
PP
PP
PP
4
ICs for Video Camera AN2108NFHQ
■ Electrical Caracteristics at VCC = 4.8 V, Ta = 25 ± 2 °C(Continned)
Parameter Symbol Conditions Min Typ Max Unit
Gamma characteristic 4 V
Gamma characteristic 5 V
Pre-aperture frequency G
characteristic
Pre-aperture output D-range V
Pre-aperture gain 1 V
Pre-aperture gain 2 V
Output amplifier frequency G
characteristic
Output amplifier level V
adjustment
Output amplifier output V
D-range
Output amplifier gain 1 G
Output amplifier gain 2 G
Output amplifier gain 3 G
A/D Out output DC 1 V
A/D Out output DC 2 V
Total frequency characteristic G
9 dB amplifier gain G
10 stair step 720 mVPP Pin32 = GN D 1.22 2.02 3.82 dB
GM4
10 stair step 600 mVPP 9th stage Pin32 = GND
GM6
10 MHz Sine wave 300 mV
FG
10 stair step 800 mV
PR3
9 MHz Sine wave 300 mV
PR5
9 MHz Sine wave 300 mV
PR4
10 MHz Sine wave 300 mV
FB
10 stair step 300 mV
ADJ2
10 stair step 1000 mV
AD5
10 stair step 300 mV
AD1
10 stair step 300 mV
AD2
10 stair step 600 mV
AD4
Pin16 = 1.0 V −70 0 70 mV
OFF1
Pin16 = 1.4 V −70 0 70 mV
OFF2
FT
Sampling pulse 10 MHz CDS input 300 mVPP7.6 8.6 9.6 dB
1
PP
PP
PP
PP
PP
PP
PP
PP
PP
PP
10 30 50 mV
−1.6 − 0.4 0.8 dB
700 800 900 mV
− 0.2 0.5 dB
5.0 7.0 dB
−1.6 − 0.4 0.8 dB
7B 90 A5 Hex
2200 2450 2700 mV
2.5 4.0 dB
13.5 15.5 dB
−1.0 0 1.0 dB
−3.5 −2.0 −0.5 dB
PP
PP
PP
5