SM5307A
3-channel Video Buffer
OVERVIEW
The SM5307A is a 3-channel video buffer for the HD output equipment that corresponds to the 480i to 1080p
video signal standards. It can change the 5th-order lowpass filter (LPF) which is mounted on this IC, to four
modes of SD1, SD2, HD and filter-bypass mode, which corresponds to video signal. In addition, improvement
of S/N characteristic with HD band is actualized.
FEATURES
I
I
PINOUT
(Top view)
1
24
I
I
I
I
I
I
I
I
I
I
Supply voltages: 4.75 to 5.25V
Current consumption
• Normal operation: 65mA (typ, V
CC
=
5.0V)
• Disable mode: 1.4mA (typ, V
CC
=
5.0V)
Output gain: 6.0dB
±
0.5dB
LPF passband
• SD1 mode
CH1
=
6.75MHz
CH2, CH3
=
3.375MHz
• SD2 mode
CH1
=
13.5MHz
CH2, CH3
=
6.75MHz
• HD mode
CH1
=
30MHz
CH2, CH3
=
15MHz
Filter-bypass mode corresponding to 1080p:
80MHz (typ)
Maximum input amplitude: 1.4Vp-p
S/N ratio: 70dB (typ)
Input multiplexer: 2-system input, 1-system output
Input type
• CH1: Synctip clamp
• CH2, CH3: Bias
Disable mode function (power-down mode)
Operating ambient temperature range:
−40
to 85°C
Package: 24-pin VSOP (Pb free)
FC1
IN1A
IN1B
VCC
NC
IN2A
IN2B
NC
GND
IN3A
IN3B
DISABLE
FC2
NC
GND
NC
OUT1
VCC
OUT2
GND
OUT3
NC
VCC
12
13
MUXSEL
PACKAGE DIMENSIONS
(Unit: mm)
7.9 ± 0.2
+ 0.1
0.15
−
0.05
5.6 ± 0.2
7.6 ± 0.2
APPLICATIONS
I
I
I
1.15 ± 0.1
DVD player
DVD recorder
Set Top Box
ORDERING INFORMATION
Device
SM5307AV
Package
24-pin VSOP
0.10
+ 0.1
0.22
−
0.05
0 to 10
0.12
M
SEIKO NPC CORPORATION —1
0.10 ± 0.05
0.65
0.5 ± 0.2
SM5307A
BLOCK DIAGRAM
VCC
VCC
VCC
CH-1
IN1A
Clamp
MUX
LPF
30MHz/13.5MHz/6.75MHz
6dB
OUT1
IN1B
Clamp
CH-2
IN2A
Bias
MUX
LPF
15MHz/6.75MHz/3.375MHz
6dB
OUT2
IN2B
Bias
CH-3
IN3A
Bias
MUX
LPF
15MHz/6.75MHz/3.375MHz
6dB
OUT3
IN3B
Bias
GND
GND
GND
Select Control
DISABLE
MUXSEL
FC1
FC2
SEIKO NPC CORPORATION —2
SM5307A
PIN DESCRIPTION
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
*1. I: input, O: output
*2. A: analog, D: digital
Name
FC1
IN1A
IN1B
VCC
NC
IN2A
IN2B
NC
GND
IN3A
IN3B
DISABLE
MUXSEL
VCC
NC
OUT3
GND
OUT2
VCC
OUT1
NC
GND
NC
FC2
I/O
*1
I
I
I
A/D
*2
D
A
A
–
Filter select pin 1
Video signal input pin (CH-1, input A)
Video signal input pin (CH-1, input B)
Supply pin
No connection
Video signal input pin (CH-2, input A)
Video signal input pin (CH-2, input B)
No connection
Ground pin
Video signal input pin (CH-3, input A)
Video signal input pin (CH-3, input B)
Disable function control pin
Input multiplexer switch control pin
Supply pin
No connection
Video signal output pin (CH-3)
Ground pin
Video signal output pin (CH-2)
Supply pin
Video signal output pin (CH-1)
No connection
Ground pin
No connection
Filter select pin 2
Description
−
−
I
I
−
A
A
−
−
I
I
I
I
−
–
A
A
D
D
–
−
−
O
−
A
–
A
–
A
−
O
−
O
−
−
−
I
−
–
−
D
SEIKO NPC CORPORATION —3
SM5307A
PIN EQUIVALENT CIRCUITS
Number
Name
I/O
*1
Equivalent circuit
2
3
IN1A
IN1B
I
IN1A
IN1B
50Ω
6
7
10
11
IN2A
IN2B
IN3A
IN3B
I
IN2A
IN2B
IN3A
IN3B
50Ω
20kΩ
20
18
16
OUT1
OUT2
OUT3
O
OUT1
OUT2
OUT3
2kΩ
12
13
24
1
DISABLE
MUXSEL
FC2
FC1
I
DISABLE
MUXSEL
FC2
FC1
200Ω
*1. I: input, O: output
SEIKO NPC CORPORATION —4
SM5307A
SPECIFICATIONS
Absolute Maximum Ratings
GND
=
0V
Parameter
Supply voltage
Input voltage
Storage temperature range
Junction temperature
Power dissipation
Symbol
V
CC
V
IN
T
STG
T
J
P
D
θ
ja
= 33°C/W
VCC
MUXSEL, DISABLE, FC1, FC2,
IN1A, IN1B, IN2A, IN2B, IN3A, IN3B
Condition
Rating
−0.3
to 6.5
GND – 0.3 to V
CC
+ 0.3
−55
to +125
125
1.0
Unit
V
V
°C
°C
W
Recommended Operating Conditions
Parameter
Supply voltage
Operating ambient temperature
range
Symbol
V
CC
Ta
Condition
Rating
4.75 to 5.25
−40
to +85
Unit
V
°C
Electrical Characteristics
DC Characteristics
V
CC
=
5.0V, Ta
=
25°C, fin = 100 kHz, V
IN
= 1.0Vp-p, R
L
= 75Ω, unless otherwise noted.
Rating
Parameter
Current consumption 1
*1
Current consumption 2
*1
HIGH-level Input voltage
LOW-level Input voltage
HIGH-level input leakage current
LOW-level input leakage current
Symbol
I
CC1
I
CC2
V
IH
V
IL
I
LH
I
LL
Condition
min
DISABLE = “L”
DISABLE = “H” (on disable mode)
MUXSEL, DISABLE, FC1, FC2,
V
CC
= 4.75 to 5.25V,
Ta = –40 to +85°C
MUXSEL, DISABLE, FC1, FC2
–
–
2.0
−
−
−
typ
65
1.4
−
−
−
−
max
100
2.0
–
0.8
1.0
1.0
mA
mA
V
V
µA
µA
Unit
Test
level
I
I
I
I
I
I
*1. Total of current consumption of VCC when no input signals.
SEIKO NPC CORPORATION —5
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