TK15408 75 Ω VIDEO LINE DRIVER FEATURES APPLICATIONS ■ Fixed Gain (6 dB) ■ Internal 75 Ω Drivers ■ Very Small Output Capacitor Using SAG Function Pin ■ Internal Clamping Circuit ■ Single +5 V Power Supply Operation ■ ■ ■ ■ ■ ■ Video Equipment Digital Cameras CCD Cameras TV Monitors Video Tape Recorders LCD Projectors DESCRIPTION TK15408 Operating from a single +5 V supply, the TK15408 is a dual video driver IC that takes standard video signals as analog inputs and provides buffered analog outputs for driving 150 Ω loads (series 75 Ω resistor and 75 Ω cable load). Both amplifiers have a fixed gain of 6 dB with internal clamping circuits. Each input is clamped at 1.29 V and amplified 6 dB to produce 2 VP-P (typical) into a series 75 Ω resistor and 75 Ω cable load. The internal 1.5 k SAG function resistors provide gain compensation for low frequency signals. Nominal power dissipation (no input) is typically 76 mW. The TK15408 is ideally suited for S-VHS systems. OUTPUT_A SAG_A INPUT_A VCC INPUT_B GND 01S OUTPUT_B SAG_B BLOCK DIAGRAM The TK15408M is available in the very small SOT23L-8 surface mount package. 5 kΩ 5 kΩ 1.5 kΩ 5 kΩ 1.5 kΩ VCC 75 Ω Driver - + + - 5 kΩ TK15408M 75 Ω Driver ORDERING INFORMATION Tape/Reel Code TAPE/REEL CODE TL: Tape Left December 1999 TOKO, Inc. Page 1 TK15408 ABSOLUTE MAXIMUM RATINGS Supply Voltage ........................................................... 6 V Operating Voltage Range .............................. 4.5 to 5.5 V Power Dissipation (Note 1) ................................ 200 mW Storage Temperature Range ................... -55 to +150 °C Operating Temperature Range ...................-25 to +75 °C TK15408M ELECTRICAL CHARACTERISTICS Test conditions: VCC = 5.0 V, VIN = 1.0 VP-P, RL = 150 Ω, TA = 25 °C unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS 15.1 21.0 mA ICC Supply Current No input VCMP Clamp Voltage Pin 2, Pin 3 Input terminal 1.10 1.29 1.50 V GVA Voltage Gain fin = 1 MHz 5.2 5.7 6.2 dB DG Differential Gain Staircase signal input -3.0 +0.6 +3.0 % DP Differential Phase Staircase signal input -3.0 -0.1 +3.0 deg fr Frequency Response fin = 1 MHz / 5 MHz -0.3 dB Note 1: Power dissipation is 200 mW in free air. Derate at 1.6 mW/°C for operation above 25°C. Page 2 December 1999 TOKO, Inc. TK15408 TEST CIRCUIT + 33 µF 75 Ω TP2 TP3 + OUTPUT_A 75 Ω SAG_A 33 µF TP1 INPUT_A + 4.7 µF 75 Ω TP4 V CC VCC + 33 µF 5.0 V INPUT_B GND + 4.7 µF 75 Ω SAG_B 33 µF + TP5 OUTPUT B + 75 Ω TP6 75 Ω 33 µF MEASUREMENT METHOD 1. Supply Current (ICC) The Pin 7 current is measured with no input signal. 2. Clamp Voltage (VCMP) The DC voltage at Pin 2 (Pin 3) is measured with no input signal. 3. Voltage Gain (GVA) The voltage gain equation is as follows: GVA = 20 log10 V2/V1 Where V1 is the input voltage at TP1 (TP4) and V2 is the measured voltage at TP2 (TP5). 4. Differential Gain (DG) The differential gain is measured at TP3 (TP6) when a staircase waveform of 10 steps is applied to TP1 (TP4). 5. Differential Phase (DP) The differential phase is measured at TP3 (TP6) when a staircase waveform of 10 steps is applied to TP1 (TP4). 6. Frequency Response (fr) The frequency response equation is as follows: fr = 20 log10 V2/V1 Where V1 is the measured TP3 (TP6) voltage when the TP1 (TP4) input frequency is set to 1 MHz and V2 is the measured TP3 (TP6) voltage when the TP1 (TP4) input frequency is set to 5 MHz. December 1999 TOKO, Inc. Page 3 TK15408 TYPICAL PERFORMANCE CHARACTERISTICS SUPPLY CURRENT VS. SUPPLY VOLTAGE SUPPLY CURRENT VS. TEMPERATURE 20 20 TA = 25 °C, No Input VCC = 5.0 V, No Input 18 ICC (mA) ICC (mA) 18 16 14 12 10 -50 0 50 10 4.0 100 4.5 5.0 VCC (V) VOLTAGE GAIN VS. TEMPERATURE VOLTAGE GAIN VS. SUPPLY VOLTAGE TA = 25 °C, fin = 1 MHz, VIN = 1 VP-P 7.0 GVA (dB) 6.0 6.0 5.0 5.0 0 50 4.0 4.0 100 4.5 5.0 VCC (V) FREQUENCY RESPONSE VS. TEMPERATURE FREQUENCY RESPONSE VS. SUPPLY VOLTAGE 6.0 0.5 fin = 1/5 MHz, VIN = 1 VP-P fin = 1/5 MHz, VIN = 1 VP-P 0.0 fr (dB) 0.0 fr (dB) 5.5 TA (°C) 0.5 -0.5 -0.5 -1.0 -1.0 0 50 TA (°C) Page 4 6.0 8.0 7.0 -1.5 -50 5.5 TA (°C) VCC = 5.0 V, fin = 1 MHz, VIN = 1 VP-P GVA (dB) 14 12 8.0 4.0 -50 16 100 -1.5 4.0 4.5 5.0 5.5 6.0 VCC (V) December 1999 TOKO, Inc. TK15408 TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) CLAMP VOLTAGE VS. SUPPLY VOLTAGE CLAMP VOLTAGE VS. TEMPERATURE 1.5 1.5 TA = 25 °C, Pin 2 VCC = 5.0 V, Pin 2 1.4 VCMP (V) VCMP (V) 1.4 1.3 1.2 1.2 1.1 1.1 1.0 -50 1.3 0 50 1.0 4.0 100 4.5 5.0 5.5 TA (°C) VCC (V) DIFFERENTIAL GAIN VS. TEMPERATURE DIFFERENTIAL GAIN VS. SUPPLY VOLTAGE 10 6 TA = 25 °C VIN = 1 VP-P VCC = 5.0 V, VIN = 1 VP-P 4 6.0 0 DG (%) DG (%) 2 0 -10 -2 -20 -4 -6 -50 0 50 -30 4.0 100 5.5 DIFFERENTIAL PHASE VS. TEMPERATURE DIFFERENTIAL PHASE VS. SUPPLY VOLTAGE 6.0 6 VCC = 5.0 V, VIN = 1 VP-P 4 TA = 25 °C, VIN = 1 VP-P 4 2 2 DP (deg) DP (deg) 5.0 VCC (V) 6 0 0 -2 -2 -4 -4 -6 -50 4.5 TA (°C) 0 50 TA (°C) December 1999 TOKO, Inc. 100 -6 4.0 4.5 5.0 5.5 6.0 VCC (V) Page 5 TK15408 PIN FUNCTION DESCRIPTIONS TERMINAL INTERNAL EQUIVALENT CIRCUIT PIN NO. SYMBOL VOLTAGE 8 1 OUTPUT_A SAG_A 1.6 V 1.4 V VCC 1.5 k DESCRIPTION Pin 8: Output A terminal. The output A is available to drive 75 Ω + 75 Ω load. Pin 1: SAG A terminal 5k 2 INPUT_A 1.3 V VCC Input A terminal. The luminance input signal is clamped at 1.29 V. 1.25 V 3 INPUT_B 1.3 V VCC Input B terminal. The luminance input signal is clamped at 1.29 V. 1.25 V 4 5 SAG_B OUTPUT_B 1.4 V 1.6 V Pin 5: Output B terminal. The output B is available to drive 75 Ω + 75 Ω load. Pin 4: SAG B terminal. VCC 1.5 k 5k 6 GND GND 7 VCC VCC Page 6 GND terminal. Power Supply terminal. December 1999 TOKO, Inc. TK15408 NOTES December 1999 TOKO, Inc. Page 7 TK15408 PACKAGE OUTLINE Marking Information SOT23L-8 0.45 Marking 408 5 1.0 8 TK15408 e1 3.0 marking e 0.8 1 4 Recommended Mount Pad +0.15 - 0.05 e 0.8 0.3 0.1 M +0.3 3.5 - 0.1 2.2 15 max 1.2 +0.15 - 0.05 0 - 0.1 0.1 0.4 + 0.3 0.15 1.4max 0.3 (3.4) 3.3 Dimensions are shown in millimeters Tolerance: x.x = ± 0.2 mm (unless otherwise specified) Toko America, Inc. Headquarters 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 TOKO AMERICA REGIONAL OFFICES Midwest Regional Office Toko America, Inc. 1250 Feehanville Drive Mount Prospect, IL 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 Western Regional Office Toko America, Inc. 2480 North First Street , Suite 260 San Jose, CA 95131 Tel: (408) 432-8281 Fax: (408) 943-9790 Eastern Regional Office Toko America, Inc. 107 Mill Plain Road Danbury, CT 06811 Tel: (203) 748-6871 Fax: (203) 797-1223 Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375 Visit our Internet site at http://www.tokoam.com The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc. Page 8 © 1999 Toko, Inc. All Rights Reserved December 1999 TOKO, Inc. IC-xxx-TK15408 1299O0.0K Printed in the USA