Panasonic AN3336 4-head vcr recording/playback amplifier ic Datasheet

ICs for VCR
AN3336SB
4-Head VCR Recording/Playback Amplifier IC
■ Overview
36
18
19
15.2±0.30
1
0.3±0.11
Unit : mm
The AN3336SB is a recording/playback amplifier IC for
4-head VCR. It includes RF-AGC, automatic tracking I/O,
and envelope comparing circuit.
■ Features
2.85±0.2
1.3±0.25
(0.28)
0.5
1.3±0.25
0.1±0.1
0.1
0.2 +– 0.05
0.8
• Playback VCC = 5.0V, recording VCC = 12V
• Built-in RF-AGC circuit
• Built-in automatic tracking I/O circuit
• Built-in envelope comparing circuit
8.4±0.30
11.93±0.30
36-Pin SSOP package (SSOP036-P-0450A)
■ Pin Descriptions
Pin No.
Pin name
Pin No.
Pin name
1
2
Head switching
19
Evelope detector capacitor for ch 3 and ch 4
Envelope ON/OFF switching
20
Peaking for recording
3
Ch 1 head amp. damping
Automatic tracking output
4
Ch 1 head amp. input
21
22
5
Small-signal ground
23
Automatic tracking control
6
7
Ch 2 head amp. input
24
Automatic tracking VCC
Ch 2 head amp. damping
25
Rec. Y–input
8
Sub-ground
26
Chroma output
9
Sub-ground
27
Sub-ground
10
Ch 3 head amp. damping
28
Sub-ground
11
12
Ch 3 head amp. input
Sub-ground
Small-signal ground
29
30
13
Ch 4 head amp. input
31
AGC output
14
Ch 4 head amp. damping
32
AGC detector capacitor
15
Rec. current amp. (LP) output
33
Envelope detector capacitor for ch 1 and ch 2
16
17
Rec. feedback
Head amp. switching
Rec. current amp. (SP) output
34
35
18
Rec. VCC
36
Playback VCC
Automatic tracking detector capacitor
Recording C–input
ENV output, recording bias
1
ICs for VCR
AN3336SB
■ Block Diagram
PB
5V VCC
+
HASW
C– IN
ENV
AT
GCA
Y– IN
AT
OUT
SUB– GND
MAIN– GND
0.1µF
1.5kΩ
0.1µF
0.01µF
33kΩ
36
35
34
33
32
Det.
31
30
29
28
27
26
25
24
23
22
AGC
21
20
19
Det.
CHROMA
Amp.
LOG
Mix.
Comp.
Det.
Rec
Logic
Det.
L
SP
H
H
L
HA1
L
HA2
H
LP
L
H
HA3
LP
SP
HA4
PB
ON
1
2
3
4
+ 1µF
5
6
0.01µF 0.01µF
*100Ω
7
8
9
+ 1µF
*100Ω
10
1µF
SUB–GND
11
+
12
13
0.01µF 0.01µF
*100Ω
PB
ON
14
15
+ 1µF
*100Ω
16
0.1µF
*
250
Ω
18
17
0.01µF 0.1µF
+
*
250
Ω
HSW
Rec VCC
12V
ENV OFF
H
Note) The resistance of notation* should be between 0 and 500 ohms.
■ Absolute Maximum Ratings
Parameter
Symbol
Unit
Supply voltage (1)
PB VCC
6
Supply current (2)
Rec VCC
13
V
440
mW
Operating ambient temperature Note 1)
PD
Topr
–20 to +70
˚C
Storage temperature Note 1)
Tstg
–55 to +125
˚C
Power dissipation Note 2)
Note 1) Ta=25˚C for except ambient temperature and storage temperatures.
Note 2) Allowable power dissipation of the package at Ta=70˚C.
2
Rating
V
ICs for VCR
AN3336SB
■ Recommended Operating Range (Ta=25˚C)
Parameter
Symbol
Range
Operating supply voltage range (1)
PBVCC
4.5V to 5.5V
Operating supply voltage range (2)
RecVCC
8.5V to 12.5V
■ Electrical Characteristics (Ta=25±2˚C)
Parameter
Symbol
Condition
I36
PB VCC=5V
CH 1 gain
G4–26
PB VCC=5V
CH 2 gain
G6–26
CH 3 gain
CH 4 gain
min
typ
max
Unit
56
mA
53
61
dB
PB VCC=5V
53
61
dB
G11–26
PB VCC=5V
53
61
dB
G13–26
PB VCC=5V
53
61
dB
HSW change-over sensitivity
S1
PB VCC=5V
3.8
V
HASW change-over sensitivity
S34
PB VCC=5V
3.8
V
V4–31
PB VCC=5V
270
mVP–P
AGC control sensitivity
∆V4–31
PB VCC=5V
3.0
dB
HSW DC unbalance (I)
HSW26 (I)
PB VCC=5V
100
mVP–P
HSW DC unbalance (II)
HSW26 (II)
PB VCC=5V
100
mVP–P
HASW DC unbalance (I)
HASW26 (I)
PB VCC=5V
100
mVP–P
PB circuit current
AGC output amplitude
130
HASW DC unbalance (II)
HASW26 (II)
PB VCC=5V
100
mVP–P
Input conversion noise (1)
N4–26/G4–26
PB VCC=5V
1.0
µVrms
Input conversion noise (2)
N6–26/G6–26
PB VCC=5V
1.0
µVrms
Input conversion noise (3)
N11–26/G11–26
PB VCC=5V
1.0
µVrms
Input conversion noise (4)
N13–26/G13–26
PB VCC=5V
1.0
µVrms
1.0
V
Auto-tracking output at no-input
V21min.
PB VCC=4.8V
Auto tracking max. output
V21max.
PB VCC=4.8V
3.8
V
3.5
VP–P
ENV output amplitude
V35
PB VCC=5V
Rec. circuit current
I18
Rec VCC=12V
48
mA
mAP–P
I17
Rec VCC=12V
17
32
LP Y–Rec. current output ratio
I15/I17
Rec VCC=12V
– 2.5
2.5
SP 8MHz f characteristics ratio
I17H/I17
Rec VCC=12V
–4
LP 8MHz f characteristics ratio
I15H/I15
Rec VCC=12V
–4
Rec. chroma output ratio
I17C/I17
Rec VCC=12V
–15
SP Y–Rec. current output
dB
dB
dB
–7
dB
I36
PB VCC=5V
(43)
mA
CH 1 gain
G4–26
PB VCC=5V
(57)
dB
CH 2 gain
G6–26
PB VCC=5V
(57)
dB
CH 3 gain
G11–26
PB VCC=5V
(57)
dB
CH 4 gain
G13–26
PB VCC=5V
(57)
dB
AGC output amplitude
V4–31
PB VCC=5V
(200)
mVP–P
PB circuit current
Rec circuit current
I18
Rec VCC=12V
(33)
mA
SP Y–Rec. current output
I17
Rec VCC=12V
(12)
mAP–P
Rec. chroma output ratio
I17C/I17
Rec VCC=12V
(–12)
dB
D2f
Rec VCC=12V
(– 43)
dB
Cross-modulation relative level
DM
Rec VCC=12V
Auto tracking SP output voltage (1)
V21SP1
PB VCC=4.8V, Vin=400mVP–P
(3.4)
(3.9)
V
Auto tracking SP output voltage (2)
V21SP2
PB VCC=4.8V, Vin=100mVP–P
(1.5)
(2.5)
V
PB VCC=4.8V
(0.1)
(0.5)
V
Rec. current 2nd harmonics distortion
Auto tracking LP output voltage difference V21LP–V21SP2
(– 48)
dB
Note) The characteristics value in parentheses is not a guaranteed value, but reference one on design.
3
ICs for VCR
AN3336SB
■ Functional Descriptions
1. Playback mode
• Pin36 (playback VCC) = 5V typ. (Pins15 and 17 are grounded internally)
• Pin18 (recording VCC) = open
(1) Selecting a head amplifier output channel
Channel
Input pin
Head SW Pin1
HASW Pin34
1
4
H
L
2
6
L
L
3
11
L
H
4
13
H
H
SP
LP
(2) Starting the envelope comparator
Env. ON/OFF SW
Pin2
Open
Low (special playback)
Env. comparator
Inactive
Active
(3) Automatic tracking interface
Pin24 (automatic tracking VCC) = 5V typ.
4
HASW(Pin24)
Automatic tracking
High
LP
Low
SP
• When the SP mode of the automatic tracking
interface switches to the LP mode, the gain of
the amplifier increases 5.5dB.
• When the gain control voltage at Pin23 increases,
the gain of the circuit increases.
ICs for VCR
AN3336SB
2. Recording mode
Pin18 (recording VCC) =12V typ.
Pin36 (playback VCC)
Pin24 (automatic tracking VCC)
}
Opened or grounded
Pin35 : Recording internal bias current control
How to control :
• When the external resistance decreases, the internal circuit bias current
(Itotal) increases.
35
R
• R should be 27 to 33kΩ.
HASW control at Pin34
HASW Pin34
SP output
LP output
Pin11,13
Pin4,6
Pin19
H
OFF
active
GND
Diode
Open
L
active
OFF
Diode
GND
GND
■ Reference
PD—Ta
2.000
1.800
Power dissipation PD (mW)
1.600
On glass-epoxy print board
(50mm × 50mm × t 0.8mm)
Rthj–a=69˚C/W
PD=1449mW(25˚C)
1.449
1.400
1.200
IC without heatsink
Rthj–a=120˚C/W
PD=833mW (25˚C)
1.000
833
800
600
400
200
0
0
25
50
75
100
125
150
Ambient temperature Ta (˚C)
5