MM1228

MM1221 MITSUMI | Alldatasheet

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MITSUMI 2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228 2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) Monolithic IC MM1221~MM1228 Outline These ICs are high-end video switch ICs with 2-input 1-output or 3-input 1-output including a 75Ω driver. The series includes those with and without a built-in clamp circuit and a 6dB amp. The circuit configuration table and block diagram are shown below. MM1228 is introduced as a representative model in this document. MM1221~MM1228 Series Circuit Configuration Table MM1221~MM1228 Input/Output Voltage Measurement Values (typ.) Model name # of Inputs # of Outputs 6dB amp circuit Clamp circuit Power supply voltage range MM1221 21 No No 8~13V MM1222 21 Yes No 8~13V MM1223 31 No No 8~13V MM1224 31 Yes No 8~13V MM1225 21 No Yes 4.7~13V MM1226 21 Yes Yes 4.7~13V MM1227 31 No Yes 4.7~13V MM1228 31 Yes Yes 4.7~13V Model name Power supply 5V 9V 12V Unit voltage MM1221 Input voltage 4.53 6.05 V Output voltage 4.5 6.1 V MM1222 Input voltage 4.05 5.4 V Output voltage 5.34 7.12 V MM1223 Input voltage 4.53 6.05 V Output voltage 4.5 6.1 V MM1224 Input voltage 4.05 5.4 V Output voltage 5.34 7.12 V MM1225 Input voltage 1.27 2.17 2.86 V Output voltage 1.31 2.25 2.96 V MM1226 Input voltage 1.3 2.2 2.9 V Output voltage 1.4 2.23 2.88 V MM1227 Input voltage 1.27 2.17 2.86 V Output voltage 1.31 2.25 2.96 V MM1228 Input voltage 1.3 2.2 2.9 V Output voltage 1.4 2.23 2.88 V November 2, 2001

MITSUMI 2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228 Control input truth table Control input truth table SW1 SW2 OUT LL IN1 HL IN2 L/H H IN3 SW1 SW2 OUT LL IN1 HL IN2 L/H H IN3 Block Diagram (MM1221~MM1228) SW OUT L IN1 H IN2 Control input truth table SW OUT L IN1 H IN2 Control input truth table

MITSUMI 2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228 Control input truth table Control input truth table SW1 SW2 OUT LL IN1 HL IN2 L/H H IN3 SW1 SW2 OUT LL IN1 HL IN2 L/H H IN3 Control input truth table SW OUT L IN1 H IN2 Control input truth table SW OUT L IN1 H IN2

MITSUMI 2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228 Introduction of Main Model 3-Input 1-Output Video Switch (with 75Ω driver, clamp and 6dB amp) Monolithic IC MM1228 Outline This is a high performance 3-input 1-output video switch IC with 6dB amp, clamp and 75Ω driver circuits. 1VP-P video signals can be output externally with 75Ω output.

Features

1. Built-in 75Ω driver circuit 2. Built-in 6dB amp 3. Built-in clamp circuit 4. Models in the MM1221~MM1228 series without a clamp circuit can support audio or chroma circuits 5. Mute operation possible 6. Wide operating supply voltage range 4.7~13V 7. Low current consumption 8. Wideband frequency response 7MHz at 0dB 9. Crosstalk -64dB (4.43MHz) Packages SOP-8C (MM1228XF)

Applications

1. TV 2. VCR 3. Video cameras 4. Other video equipment Block Diagram SW1 SW2 OUT LL IN1 HL IN2 L/H H IN3 Control input truth table November 2, 2001

MITSUMI 2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228 Pin Description Pin no. Pin name Function Internal equivalent circuit diagram

1 IN1 Input

3 IN2

5 IN3

2 SW1 Switch

4 SW2

7 OUT Output

6 VCC Power supply

8 GND Ground

MITSUMI 2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228 Measuring Circuit Absolute Maximum Ratings (Ta=25°C) Item Symbol Ratings Units Storage temperature TSTG -40~+125 °C Operating temperature TOPR -20~+75 °C Power supply voltage VCC 15 V Allowable loss Pd 300 mW Electrical Characteristics (Except where noted otherwise, Ta=25°C, VCC=5.0V) Item Symbol Measurement conditions Min. Typ. Max. Units Operating power supply voltage range VCC 4.7 13.0 V Consumption current Id Refer to Measuring Circuit 8.4 10.9 mA Voltage gain GV Refer to Measuring Circuit +5.5 +6.0 +6.5 dB Frequency characteristic FC Refer to Measuring Circuit -10+ 1 d B Differential gain DG Refer to Measuring Circuit 0 ±3 % Differential phase DP Refer to Measuring Circuit 0 ±3 deg Output offset voltage Voff Refer to Measuring Circuit ±30 mV Crosstalk CT Refer to Measuring Circuit -64 -54 dB SW1 input voltage H VIH1 Refer to Measuring Circuit 2.1 V SW1 input voltage L VIL1 Refer to Measuring Circuit 0.7 V SW2 input voltage H VIH2 Refer to Measuring Circuit 2.1 V SW2 input voltage L VIL2 Refer to Measuring Circuit 0.7 V

MITSUMI 2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228 Measuring Procedures (VCC=5.0V, VC1=VCC, VC2=0V) Item Symbol Switch state Measuring ProcedureS1 S2 S3 S4 S5 Consumption Id 22222 current 12222 Voltage gain Gv 21212 22111 22121 12222 Frequency FC 21212 characteristic 22111 22121 12222 Differential gain DG 21212 22111 22121 12222 Differential phase DP 21212 22111 22121 22222Output offset Voff 22212voltage 22211 12212 12221 12211 Crosstalk C T 21222 21221 21211 22122 22112 22212Switch 1 input V IH1voltage H Switch 1 input VIL1voltage L 22221Switch 2 input VIH2voltage H Switch 2 input VIL2voltage L Connect a DC ammeter to the VCC pin and measure. The ammeter is shorted for use in subsequent measurements. Input a 1.0VP-P, 100kHz sine wave to SG, and obtain GV from the following formula given TP1 voltage as V1 and TP3 voltage as V2. G V=20LOG (V2/V1) dB For the above GV measurement, given TP3 voltage for 7MHz as V3, FC is obtained from the following formula. FC=20LOG (V3/V2) dB Input a 1.0VP-P staircase wave to SG, and measure differential gain at TP4. APL=10~90% Proceed as for DG, and measure differential phase. Measure the DC voltage difference of each switch status at TP2. Assume VC1=2.1V, VC2=0.7V. Input a 1.0V P-P, 4.43MHz sine wave to SG, and given TP1 voltage as V4 and TP3 voltage as V5, CT is obtained from the following formula. CT=20LOG (V5/V4) dB Impress an optional DC voltage on TP7 and TP8. Gradually raise from VC1=0V. TP5 voltage when TP8 voltage is output on TP2 is V IH1. Gradually lower from VC1=VCC. TP5 voltage when TP7 voltage is output on TP2 is VIL1. Impress an optional DC voltage on TP7 and TP9. Gradually raise from VC1=0V. TP5 voltage when TP9 voltage is output on TP2 is V IH2. Gradually lower from VC1=VCC. TP6 voltage when TP7 voltage is output on TP2 is VIL2.