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MITSUMI
Variable Gain Amplifier (built-in Y LPF, C BPF) MM1304
Variable Gain Amplifier (built-in Y LPF, C BPF)
Monolithic IC MM1304
Outline
This IC is a variable gain amp for video with built-in luminance low pass filter and chroma band pass filter. It was developed as a post-filter for D/A converter latter position stage. The sampling frequencies for the D/A converter are assumed to be 14.3MHz for chroma and 14.3MHz and 9.5MHz for luminance.
Features
1. Luminance LPF cutoff frequency can be selected and set at 5.4MHz and 4.4MHz. When set at 5.4MHz, use in models that support S, and in normal models when set at 4.4MHz. 2. Chroma BPF center frequency can be selected and set at 3.58MHz (NTSC) and 4.4MHz (PAL). 3. Luminance variable gain range -6dB~+6dB Chroma variable gain range -3dB~+9dB and ~1dB~13dB 4. Operating power supply voltage 4.5V~5.5V 5. Luminance S/N (unweight) 10kHz~4.2MHz : 47dB typ.
Package
SSOP-16A (MM1304XJ)
Applications
1. VCR with camera 2. Other video equipment
Equivalent Circuit Diagram
MITSUMI
Variable Gain Amplifier (built-in Y LPF, C BPF) MM1304
Pin Description
Pin no. 1 2 Pin name VCC1 CIN Equivalent Circuit Diagram C power supply pin Chroma signal input. Function
3
GSW
C gain switching pin. Set at 7dB standard for low, and 3dB standard for high.
4
CTL1
C gain control pin.
5
COUT
Chroma signal output pin.
6
FSW1
C BPF frequency switching pin. Set at 3.58MHz BPF for high, and 4.43MHz BPF for low.
7 8
GND1 NC1
C GND NC pin
MITSUMI
Variable Gain Amplifier (built-in Y LPF, C BPF) MM1304
9
FC
Pin for adjusting LPF and BPF frequency response. Connect 10k between this pin and ground.
10 11 12
NC2 GND2 YOUT
NC pin Y GND Y output pin
13
FSW2
Y LPF frequency switching pin. Set at 4.4MHz LPF for high, and 5.4MHz LPF for low.
14
CTL2
Y gain control pin.
15
YIN
Luminance signal input pin.
16
VCC2
Y power supply pin.
Absolute Maximum Ratings
Item Storage temperature Operating temperature Power supply voltage Allowable loss
(Ta=25C) Symbol TSTG TOPR VCC max. Pd Ratings -40~+125 -20~+75 8 500 Units C C V mW
MITSUMI
Variable Gain Amplifier (built-in Y LPF, C BPF) MM1304
Electrical Characteristics
Item
(Ta=25C, VCC=4.75V, V1=2.2V, V2=2.1V, SG1~SG2 : no signal, SW1~SW5 : A) Measurement circuit Measurement conditions Min. Typ. Max. Units 4.5 -7.5 -1.5 4.5 5 85 90 4 105 110 125 130 -25 145 150 15 9 3 5 +2 +2 -10 -5 -20 -30 340 320 250 9 +2 +2 -10 -5 -15 -30 290 280 250 -50 -50 0.7 2.1 0.7 2.1 0.7 4.75 10.6 -6 0 6 105 110 -47 5.5 13 -4.5 -1.5 7.5 -30 125 130 -43 V mA dB dB dB MHz dB nS nS dB MHz dB nS nS dB dB dB dB dB dB dB dB dB dB nS nS nS dB dB dB dB dB dB dB nS nS nS dB dB V V V V V V
Symbol
Operating power supply voltage VCC Consumption current ICC Y subsystem cutoff frequency 5.4 MHz Voltage gain 1 GV1 TP7 SG2 : sine wave 2VP-P 100kHz V2=1.0V TP7 SG2 : sine wave 1VP-P 100kHz Voltage gain 2 GV2 TP7 SG2 : sine wave 0.5VP-P 100kHz V2=4.2V Voltage gain 3 GV3 Cutoff frequency 5.4 MHz fc1 TP7 SG2 : sine wave 1VP-P Frequency characteristic 1 Gf1 TP7 SG2 : sine wave 1VP-P 14.5MHz Group delay characteristic 1 td1 TP7 SG2 : sine wave 1VP-P 100kHz Group delay characteristic 2 td2 TP7 SG2 : sine wave 1VP-P 1MHz TP7 SG2 : white 50% video signal S/N SN Y subsystem cutoff frequency 4.4 MHz SW5 : B TP7 SG2 : sine wave 1VP-P Cutoff frequency 5.4 MHz fC2 Frequency characteristic 2 Gf1 TP7 SG2 : sine wave 1VP-P 9.5MHz Group delay characteristic 3 td3 TP7 SG1 : sine wave 1VP-P 100kHz Group delay characteristic 4 td4 TP7 SG2 : sine wave 1VP-P 1MHz C system NTSCExcept where noted otherwise, SW4 : B Voltage gain 4 GV4 TP4 SG1 : sine wave 0.14VP-P V1=4.4V Voltage gain 5 GV5 TP4 SG1 : sine wave 0.28 VP-P TP4 SG1 : sine wave 0.56VP-P V1=1.1V Voltage gain 6 GV6 Voltage gain 7 GV7 TP4 SG1 : sine wave 0.28VP-P SW3 : B Frequency characteristic 3 Gf3 TP4 SG1 : sine wave 0.28VP-P 2.78MHz Frequency characteristic 4 Gf4 TP4 SG1 : sine wave 0.28VP-P 4.38MHz Frequency characteristic 5 Gf5 TP4 SG1 : sine wave 0.28VP-P 1.08MHz SG1 : sine wave 0.28VP-P 6.08MHz Frequency characteristic 6 Gf6 TP4 SG1 : sine wave 0.28VP-P 10MHz Frequency characteristic 7 Gf7 TP4 SG1 : sine wave 0.28VP-P15MHz Frequency characteristic 8 Gf8 TP4 Group delay characteristic 5 td5 TP4 SG1 : sine wave 0.28VP-P Group delay characteristic 6 td6 TP4 SG1 : sine wave 0.28VP-P 2.78MHz SG1 : sine wave 0.28VP-P 4.38MHz Group delay characteristic 7 td7 TP4 C system PALExcept where noted otherwise, SG1 : f=4.43MHz TP4 SG1 : sine wave 0.28VP-P Voltage gain 8 GV8 Frequency characteristic 9 Gf9 TP4 SG1 : sine wave 0.28VP-P 3.63MHz Frequency characteristic 10 Gf10 TP4 SG1 : sine wave 0.28VP-P 5.23MHz Frequency characteristic 11 Gf11 TP4 SG1 : sine wave 0.28VP-P 1.93MHz Frequency characteristic 12 Gf12 TP4 SG1 : sine wave 0.28VP-P 6.93MHz Frequency characteristic 13 Gf13 TP4 SG1 : sine wave 0.28VP-P 10MHz Frequency characteristic 14 Gf14 TP4 SG1 : sine wave 0.28VP-P 15MHz Group delay characteristic 8 td8 TP4 SG1 : sine wave 0.28VP-P Group delay characteristic 9 td9 TP4 SG1 : sine wave 0.28VP-P 3.63MHz Group delay characteristic 10 td10 TP4 SG1 : sine wave 0.28VP-P 5.23MHz Crosstalk TP4 SG2 : sine wave 1VP-P 4.43MHz SW1 : B YC CT1 TP7 SG1 : sine wave 0.28VP-P 4.43MHz SW2 : B CY CT2 SW input voltage SW3~SW5 : C GSW (H) VIH1 TP4 SG1 : sine wave 0.28VP-P 4.43MHz GSW (L) VIL1 TP4 SG1 : sine wave 0.28VP-P 4.43MHz TP4 SG1 : sine wave 0.28VP-P 4.43MHz FSW1 (H) VIH2 FSW1 (L) VIL2 TP4 SG1 : sine wave 0.28VP-P 4.43MHz FSW2 (H) VIH3 TP7 SG2 : sine wave 1VP-P 4.43MHz FSW2 (L) VIL3 TP7 SG2 : sine wave 1VP-P 4.43MHz
9 13 3 7 -3 1 -1 3 -5.5 -3.5 -7.5 -3.5
230 160 150
310 240 200
3 7 -5.5 -2.2 -7.5 -3.0
180 120 130
260 200 200 -55 -55
2.1
MITSUMI
Variable Gain Amplifier (built-in Y LPF, C BPF) MM1304
Measuring Circuit
Design so that , to the extent *1 response may be affected. possible, YOUT pin and FC pin are not capacitance coupled.
Filter frequency
*2 Connect NC2 pin to ground. *3 Use component with 1% precision.
Characteristics
1. LPF 5.4MHzLPF Amplitude-Frequency response
(dB) 0 -10 -20 -30 100k 1M 10M 100M (Hz)
(IC internal filters)
4.4MHzLPF Amplitude-Frequency response
(dB) 0 -10 -20 -30 100k 1M 10M 100M (Hz)
2. BPF 3.58MHzBPF Amplitude-Frequency response
(dB) 0 -10 -20 -30 1M 10M 100M (Hz)
4.43MHzBPF Amplitude-Frequency response
(dB) 0 -10 -20 -30 1M 10M 100M (Hz)

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