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PDF SM5301BS Data sheet ( Hoja de datos )
| Número de pieza | SM5301BS | |
| Descripción | 3-channel Video Buffer | |
| Fabricantes | Nippon Precision Circuits | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SM5301BS (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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SM5301BS
3-channel Video Buffer with Built-in Wideband Filters
with Filter Through Function
OVERVIEW
The SM5301BS is a video filter LSI with buffered outputs for VESA-standard ATSC digital TV. The filter
employs a 5-order Butterworth lowpass filter configuration. The filter characteristics have been optimized for
minimal overshoot and flat group delay, it has a variable cutoff frequency and guaranteed output buffer-stage
channel gain difference and phase difference values. It has also filter through mode.
FEATURES
I Supply voltage: 5V ± 10%
I VESA-standard ATSC digital TV RGB/YUV
video filters
I RGB/YUV switching multiplexer function
I Synctip clamp input
I 0dB, 6dB gain switching function
(input-to-output AC signal gain)
I Channel-to-channel gain difference: 0.5dB (± 5%
supply voltage variation)
I Channel-to-channel phase difference: 3.5 degree
I Output signal harmonic distortion (all channels):
1.5%
I Cutoff frequency: 5 to 37MHz variable
I Filter through mode
(passband frequency is 46MHz, when gain is 6dB)
I Package: 28-pin HSOP (Pb free)
APPLICATIONS
I Set-top boxes
I Digital television
I DVD players
PINOUT
(Top view)
GINA/UINA 1
GSG1 2
GINB/UINB 3
NC 4
BINA/VINA 5
GSB1 6
BINB/VINB 7
GND
NC 8
DISABLE 9
GND3 10
BOUT/VOUT 11
VCC3 12
GND2 13
GOUT/UOUT 14
28 NC
27 RINB/YINB
26 GSR1
25 RINA/YINA
24 VCC4
23 THROUGH
22 MUXSEL
GND
21 VFC
20 RFC
19 GND4
18 VCC1
17 ROUT/YOUT
16 GND1
15 VCC2
ORDERING INFORMATION
Device
SM5301BS
Package
28-pin HSOP
PACKAGE DIMENSIONS
(Unit: mm)
0.15
+
–
0.1
0.05
1.3TYP
18.6 ± 0.3
0 to 10
0.8 5.15
0.10
0.35 ± 0.05
0.12 M
SEIKO NPC CORPORATION —1
1 page  
SM5301BS
Electrical Characteristics
Input and Output Characteristics
VCC = 4.5 to 5.5V, Ta = – 25 to 85°C unless otherwise noted. Refer to “Measurement Circuit”.
Parameter
Supply current 1
Supply current 2
Supply current 3
Output gain error 1
Output gain error 2
Maximum output voltage
DISABLE-mode input impedance
(pull-down)
Clamp response time
Maximum input amplitude
Maximum overshoot
Maximum load capacitance
Output drive load
Channel-to-channel gain
difference
Channel-to-channel phase
difference
Output harmonic distortion
Power supply rejection ratio
Output short-circuit current
Logic HIGH-level input voltage 1
Logic LOW-level input voltage 1
Logic HIGH-level input voltage 2
Logic LOW-level input voltage 2
Logic pull-up resistance
Logic pull-down resistance
Symbol
ICC1
ICC2
ICC3
∆AV1
∆AV2
Vout
RIN1
Tclamp
VI
VOS
CL
RL
dG
dφ
THD
PSRR
ISC
VIH1
VIL1
VIH2
VIL2
RIN2
RIN3
Condition
VCC = 5.5V, RFC = 820Ω to GND,
VFC = 0.2V, DISABLE = "L"
VCC = 5.5V, RFC = 820Ω to GND,
VFC = 1.6V, DISABLE = "L"
VCC = 5.5V, RFC = 820Ω to GND,
VFC = 0.2V, DISABLE = "H"
Gain = 0dB/6dB,
VCC = 4.75 to 5.25V, Ta = 0 to 70°C
Gain = 0dB/6dB, Ta = – 25 to 85°C
RL = 75Ω to GND, Gain = 6dB
RINA/YINA, RINB/YINB, GINA/UINA,
GINB/UINB, BINA/VINA, BINB/VINB
Time for 90% output signal change
for 10mV input signal, CIN = 0.1µF
AC coupling input, Gain = 6dB
2Vp-p pulse output
BOUT/VOUT, GOUT/UOUT, ROUT/YOUT
one load unit = 150Ω
Between R/G/B, fc/2 [Hz]
min
70
90
1
–
–
2.4
40
–
–
–
–
–
–
Between R/G/B, fc/2 [Hz]
Vout = 2Vp-p, f = 1MHz
VCC = 0.5Vp-p, f = 100kHz
DISABLE, MUXSEL, THROUGH
DISABLE, MUXSEL, THROUGH
GSB1, GSG1, GSR1
GSB1, GSG1, GSR1
GSB1, GSG1, GSR1
DISABLE, MUXSEL, THROUGH
–
–
–
–
2.5
–
VCC − 0.5
–
32
40
Rating
typ
100
120
2.5
–
–
–
50
8
–
10
–
–
–
3.5
1.5
35
–
–
–
–
–
40
50
max
Unit
Test
level
130 mA I
160 mA I
5 mA I
± 0.5 dB
± 1 dB
– Vp-p
60 kΩ
I
I
I
I
– ms II
1.4 Vp-p I
– % II
15 pF II
2 load I
0.5 dB I
–
degree
II
– % II
– dB II
100 mA II
– VI
1.0 V I
– VI
0.5 V I
48 kΩ I
60 kΩ I
SEIKO NPC CORPORATION —5
5 Page 
SM5301BS
Adjusting the Cutoff Frequency
Constant-voltage control 1
Cutoff frequency control using a reference voltage VR generated by voltage divider formed by R1 and R2.
VR
R1
VFC
R2
RFC
Constant-voltage control 2
Cutoff frequency control by adjusting the resistance connected to RFC.
VFC
VR
RFC
PWM control
Cutoff frequency control by smoothing the PWM signal, using R1 and C1, input to VFC.
PWM
R1 VFC
C1
RFC
When VFC = 0.2V VDD = 3.3V, 6% duty drive
VDD = 5.0V, 4% duty drive
When VFC = 1.6V VDD = 3.3V, 48% duty drive
VDD = 5.0V, 32% duty drive
Note: The resistor connected to RFC can affect the cutoff frequency response, so a high-precision component
should be used. It is recommended to set the RC filter cutoff frequency to < 1/100fc of the PWM wave-
form frequency.
SEIKO NPC CORPORATION —11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet SM5301BS.PDF ] | |
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