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PDF MM1757 Data sheet ( Hoja de datos )
| Número de pieza | MM1757 | |
| Descripción | HD-Compatible Video Driver IC | |
| Fabricantes | Mitsumi | |
| Logotipo |  |
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MITSUMI
HD-Compatible Video Driver IC MM1757 Series
HD-Compatible Video Driver IC
Monolithic IC MM1757 Series
April 28, 2009
Outline
This IC is a two-channel 75Ω video driver IC supporting HD (720p/D4, 1080i/D3). It provides the input and
output for composite video (V), S-Video (Y, C), and Y color difference (CY, Cb, Cr) (only Y color difference
input/output is HD-compatible). It supports both single and dual power supplies. If a single power supply is
used, a sag correction circuit can reduce output capacitance, while no output capacitance is required if a dual
power supply is used. It also includes an LPF (VCVS Butterworth) required after D/A conversion, D-terminal
identification signal (line 1 - line 3) and S-terminal identification signal (S1, S2) output functions, which is ideal
as an output driver for Hi-Vision (HD) signal output equipment such as set-top boxes (STBs) and DVD, Blu-ray
recorders.
Features
1. Supports the Hi-Vision signal
2. Supports single power supplies and dual power supplies
3. Includes a VCVS Butterworth LPF
4. Includes D-terminal identification signal (line 1 - line 3) and S-terminal identification signal (S1, S2) output
functions (F rank)
5. Two types of IC control methods are available; I2C bus control and DC control with a control pin (F rank)
Item
Model
Input/Output terminal
Power supply
Output coupling
capacitor
D Terminal
HD/SD switch
I2C Bus control
Clamp/Bias switch
CVBS/Y/C
(Bus bandwidth/Stop Bus bandwidth)
CY/Cb/Cr-SD
(Bus bandwidth/Stop Bus bandwidth)
CY/Cb/Cr-HD
(Bus bandwidth/Stop Bus bandwidth)
Packages
MM1757DH
Dual/Single
/
37MHz/148MHz
HSOP-28
MM1757EH
CY/Cb/Cr, CVBS, Y/C
Single
6.75MHz/27MHz
13.5MHz/54MHz
30MHz/74MHz
HSOP-28
MM1757FH
Dual/Single
/
30MHz/74MHz
HSOP-36
Packages
1. HSOP-28 (D, E rank)
2. HSOP-36 (F rank)
Applications
1. STB
2. DVD, Blu-ray Recorder
1 page  
MITSUMI
HD-Compatible Video Driver IC MM1757 Series
F rank
CIN 1
150k
Bias
4dB
VCC1
11
VCC2
28
LPF
6.75MHz
2dB
VIN 3
Clamp
+
4dB
LPF
6.75MHz
2dB
75
Driver
75
Driver
YIN 5
Clamp
4dB
LPF
6.75MHz
2dB
75
Driver
Clamp
150k
Bias
CYIN 12
4dB
CbIN 14
150k
Bias
4dB
CrIN 16
150k
Bias
Dual/Single 6
YC MIX 4
Clamp/Bias 13
SD/HD 15
Mute1 2
Mute2 17
SCL 8
SDA 9
Address 10
Bias 7
Vref
4dB
13.5MHz
LPF
LPF
30MHz
13.5MHz
LPF
LPF
30MHz
13.5MHz
LPF
LPF
30MHz
2dB
75
Driver
2dB
75
Driver
2dB
75
Driver
Logic
SW Control
Mute2
Mute1
I2C
Control
DCOUT
18
VEE1
21 24 31
VEE2
36
GND
34 COUT
32 VOUT
33 VSAG
29 YOUT
30 YSAG
26 CYOUT
25 CYSAG
22 CbOUT
19 CrOUT
35 S1/S2OUT
27 Line 1OUT
23 Line 2OUT
20 Line 3OUT
5 Page 
MITSUMI
HD-Compatible Video Driver IC MM1757 Series
Pin No.
11
28
Pin name
VCC1
VCC2
Pin description
Function
Positive Voltage Supply
Pin to apply a positive supply voltage. Apply 5V.
11pin and 28pin are not shorted inside the IC.
VCC2 is connected to an output stage circuit, and VCC1 is connected to a circuit
other than an output stage circuit.
Note : Please be sure to short-circuit VCC1 and VCC2 externally.
Note : When using dual power supplies,
after VEE1 and VEE2 or simultaneously, turn on VCC1 and VCC2.
Note : Please arrange power supply bypass capacitor near the terminal.
External circuit
Equivalent circuit diagram
VCC=5V
100µ 0.1µ
Input signal
DC Voltage :
4.5V~5.5V [at Single mode]
4.7V~5.3V [at Dual mode]
Function
−
Component Y Signal Input or RGB Signal Input
Pin to input component Y signals or RGB signals
Select an input type (clamp/bias) with the Clamp/Bias pin (13pin) or I2C BUS.
Note : As shown below, select an external input capacitance corresponding to an
input type (clamp/bias).
Pin voltage : 1.4V typ. [Clamp] [at Single mode]
or 2.5V typ. [Bias] [at Single mode]
Input impedance : 150kΩ [Bias]
External circuit
Equivalent circuit diagram
0.1µ
12 CYIN
Component Y
signal input
[Clamp select]
10µ
RGB signal input
[Bias select]
when not using it : Open
Input signal
VCC1
Component Y 1V
signal
0.6V
Ternary synchronizing signal
RGB signal
0.7V
12
VEE1
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MM1757.PDF ] | |
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