NJM2559 Output Coupling Capacitor-less Video Amplifier with Power Supply Short-circuit Protection ■GENERAL DESCRIPTION The NJM2559 is a output coupling capacitor-less video amplifier with power supply short-circuit protection.* When the DC voltage is impressed to the output terminal, it becomes a power saving mode, and IC is protected. The NJM2559 is suitable for the video application at risk of power supply short-circuit. ■PACKAGE OUTLINE NJM2559RB1 *DC coupling ■FEATURES ● Operating Voltage 4.5 to 5.5V ● Output Coupling Capacitor-less (0.5V DC Output) ● Power Supply Short-circuit Protection Circuit ● Internal LPF -32dB typ. at 19MHz ● 12dB Amplifier ● 75Ω Driver ● Power-save Circuit ● Bipolar Technology ● Package Outline TVSP8 ■PIN CONNECTION 1 8 2 7 3 6 4 5 1: NC 2: GND 3: REF 4: Vout 5: V+ 6: Vin 7: Power save 8: NC ■BLOCK DIAGRAM VCC GND 12dB IN 50Ω 75Ω PS 75ΩDRV OUT LPF 0.1u 75Ω 120Ω CLAMP 120Ω REF REF 33uF 120Ω + 120Ω Ver.0 -1- NJM2559 ■ABSOLUTE MAXIMUM RATINGS(Ta=25°C) PARAMETER SYMBOL RATINGS UNIT + Supply Voltage V 7.0 V Output Terminal Voltage Vo 13.5 Power Dissipation PD 580 *1 mW Operating Temperature Range Topr -40 to +85 °C Storage Temperature Range Tstg -40 to +150 °C (Note) At on a board of EIA/JEDEC specification. (114.3 x 76.2 x 1.6mm Two layers, FR-4) + ■ELECTRICAL CHRACTERISTCS 1( V =5V, RL= refer to test circuit, Ta=25°C) PARAMETER SYMBOL MIN. TYP. MAX. UNIT Operating Voltage Supply Current Supply Current at Power Save Mode Power Supply Short-circuit Voltage Output Terminal Voltage at Power Supply Short-circuit REF Terminal Voltage 1 at Power Supply Short-circuit REF Terminal Voltage 2 at Power Supply Short-circuit Maximum Output Level Voltage Gain Low Pass Filter Characteristic Vopr ICC 4.5 - 5.0 9.0 5.5 12.0 V mA No signal Isave Power save mode - 40 100 uA 75Ω series resistance connection - - 16 V VoutDCIN 75Ω series resistance connection - - 13.5 V 1.2 1.5 1.8 V 0.8 1.1 1.4 V 2.2 11.9 -0.6 - 2.5 12.3 -0.1 -32 12.7 0.4 -22 Vp-p dB - 0.5 - % - 1.5 - deg 1.8 0 0.5 - 0.65 + V 0.3 V VoDCIN VthREF1 VthREF2 Vom Gv Gfy4.5M Gfy19M Differential Gain DG Differential Phase DP Output DC Voltage SW Voltage High Level SW Voltage Low Level VoDC VthPSH VthPSL TEST CONDITION Power supply short-circuit protection OFF→ON Power supply short-circuit protection ON→OFF f=100kHz, THD=1%, sin-signal Vin=100kHz,0.5Vp-p, sin-signal Vin=4.5MHz/100kHz, 0.5Vp-p Vin=19MHz/100kHz, 0.5Vp-p Vin=0.5Vp-p, 10step video signal, RL=75Ω Vin=0.5Vp-p, 10step video signal, RL=75Ω No signal Power save terminal switch voltage Power save terminal switch voltage dB V ■ CONTROL TERMINAL PARAMETER R P o w e r E STATUS F S a v e H MODE Power save: ON Non-Active mode (Mute) L Power save: OFF Active mode (Mute) H Power save: OFF Active mode L Power save: ON Non-Active mode (Mute) OPEN Power save: ON Non-Active mode (Mute) Ver.0 -2- NJM2559 ■ TEST CIRCUIT 1 NC NC 8 2 GND Power Save 7 3 REF VIN 6 0.1uF 75Ω 75Ω 4 75Ω 120Ω VOUT V+ 5 10uF 0.1uF 120Ω 120Ω 33uF + 120Ω ■ APPLICATION Please connect the capacitor of power supply terminal (pin 5) near IC. DC coupling is recommended. Please do not connect the output coupling capacitor. External resistance must use power dissipation :125mW or more. When 120Ω x3 are replaced with 360Ω, 400mW or more is recommended. Ver.0 -3- NJM2559 ■ APPLICATION CIRCUIT: Power Supply Short-circuit for 18Vmax) 1 NC NC 8 2 GND Power Save 7 3 REF VIN 6 0.1uF 75Ω 75Ω 4 VOUT V+ 5 10uF 75Ω 500Ω 33uF 0.1uF 360Ω + 120Ω ■ APPLICATION Please connect the capacitor of power supply terminal (pin 5) near IC. DC coupling is recommended. Please do not connect the output coupling capacitor. The power dissipation of external resistance is as follows. When the power supply short-circuit voltage is 18Vmax, the current that flows to each resistance is as follows. - 75Ω (series resistance): about 60mA - 360Ω,120Ω (power supply short-circuit detection resistance): about 30mA - 500Ω(pull-down resistance): about 30mA The power dissipation recommendation value of each resistance is as follows. - 75Ω (series resistance): 300mW or more - 360Ω(power supply short-circuit detection resistance): 400mW or more - 120Ω(power supply short-circuit detection resistance): 125mW or more - 500Ω(pull-down resistance): 500mW or more The load resistance of NJM2559 is about 93Ω in this application circuit. Please use it more than 93Ω. Moreover, supply current increases by 1mA when comparing with test circuit. Ver.0 -4- NJM2559 ■ TYPICAL CHARACTERICS V+ vs Icc V+ vs Isave 100 15 75 Icc[mA] Isave[uA] 10 50 5 25 0 0 4 4.5 5 V+ [V] 5.5 4 6 V+ vs Protect Mode1 5 V+ [V] 5.5 6 V+ vs Protect Mode2 16 16 OUT1 VOUT1 REF1 14 OUT2 VOUT2 REF2 14 12 OUT2/VOUT2/REF2[V] 12 OUT1/VOUT1/REF1[V] 4.5 10 8 6 10 8 6 4 4 2 2 0 0 4 4.5 5 V+ [V] 5.5 6 Mode1: Power supply short-circuit protection OFF→ →ON The voltage is applied to OUT from 0V in the step of +0.1V. Each voltage when the voltage of VIN began to fall on Low is measured. 4 4.5 5 V+ [V] 5.5 6 Mode2: Power supply short-circuit protection ON→ →OFF The voltage is applied to OUT from 16V in the step of -0.1V. Each voltage when the voltage of VIN becomes 1.4V is measured. Power supply short-circuit protection internal impedance: about 4kΩ V+ OUT1 OUT2 Iout OFF GND VOUT1 VOUT2 120Ω 75Ω 120Ω to REF REF1 REF2 120Ω 120Ω Ver.0 -5- NJM2559 ■ TYPICAL CHARACTERICS V+ vs Vom V+ vs Gv 6 14.0 13.5 5 Gv[dB] Vom[Vpp] 13.0 3 12.5 12.0 2 11.5 0 11.0 4 4.5 5 V+ [V] 5.5 6 4 4.5 5 V+ [V] 5.5 6 5.5 6 V+ vs Gfy19M V+ vs Gfy4.5M -10.0 1.0 -20.0 Gfy19M[dB] Gfy4.5M[dB] 0.5 0.0 -0.5 -30.0 -40.0 -50.0 -60.0 -1.0 4 4.5 5 V+ [V] 5.5 4 6 4.5 V+ vs DP V+ vs DG 5.0 5.0 4.0 4.0 3.0 DG[%] DP[deg] 3.0 2.0 2.0 1.0 1.0 0.0 0.0 4 -6- 5 V+ [V] 4.5 5 V+ [V] 5.5 6 4 4.5 5 V+ [V] 5.5 6 Ver.0 NJM2559 ■ TYPICAL CHARACTERICS V+ vs VoDC 1.0 0.8 VoDC[V] 0.6 0.4 0.2 0.0 4 4.5 5 V+ [V] 5.5 6 V+ vs VthL 2.0 2.0 1.5 1.5 VthL[V] VthH[V] V+ vs VthH 1.0 1.0 0.5 0.5 0.0 0.0 4 4.5 5 V+ [V] 5.5 6 4 4.5 5 V+ [V] 5.5 6 Ver.0 -7- NJM2559 ■ TYPICAL CHARACTERICS T vs Icc T vs Isave 15 200.0 150.0 Isave[uA] Icc[mA] 10 100.0 5 50.0 0 -40 -20 0 20 40 o T [C ] 60 80 100 0.0 120 -40 -20 T vs Protect Mode1 20 40 o T [C ] 60 80 100 120 80 100 120 T vs Protect Mode2 16 16 OUT1 VOUT1 REF1 14 OUT2 VOUT2 REF2 14 12 OUT2/VOUT2/REF2[V] 12 OUT1/VOUT1/REF1[V] 0 10 8 6 10 8 6 4 4 2 2 0 0 -40 -20 0 20 40 o T [C ] 60 80 100 120 Mode1: Power supply short-circuit protection OFF→ →ON The voltage is applied to OUT from 0V in the step of +0.1V. Each voltage when the voltage of VIN began to fall on Low is measured. -40 -20 0 20 40 o T [C ] 60 Mode2: Power supply short-circuit protection ON→ →OFF The voltage is applied to OUT from 16V in the step of -0.1V. Each voltage when the voltage of VIN becomes 1.4V is measured. Power supply short-circuit protection internal impedance: about 4kΩ V+ OUT1 OUT2 Iout OFF GND VOUT1 VOUT2 120Ω 75Ω 120Ω to REF REF1 REF2 120Ω 120Ω Ver.0 -8- NJM2559 ■ TYPICAL CHARACTERICS T vs Vom T vs Gv 5.0 14.0 13.5 4.0 Gv[dB] Vom[Vp-p] 13.0 3.0 12.5 2.0 12.0 1.0 11.5 0.0 11.0 -40 -20 0 20 40 o T [C ] 60 80 100 120 -40 -20 0 20 T vs Gfy4.5M 40 o T [C ] 60 80 100 120 80 100 120 T vs Gfy19M 1.0 -10.0 -20.0 -30.0 Gfy19M[dB] Gfy4.5M[dB] 0.5 0.0 -40.0 -0.5 -50.0 -1.0 -60.0 -40 -20 0 20 40 o T [C ] 60 80 100 120 -40 -20 0 20 T vs DG 40 o T [C ] 60 T vs DP 5.0 5.0 4.0 4.0 3.0 DP[deg] DG[%] 3.0 2.0 2.0 1.0 1.0 0.0 -40 -20 0 20 40 o T [C ] 60 80 100 120 0.0 -40 -20 0 20 40 o T [C ] 60 80 100 120 Ver.0 -9- NJM2559 ■ TYPICAL CHARACTERICS T vs VoDC 1.0 VoDC[V] 0.8 0.6 0.4 0.2 0.0 -40 -20 0 20 40 o T [C ] 60 80 100 120 T vs VthL 2.0 1.5 1.5 VthL[V] 2.0 1.0 0.5 1.0 0.5 0.0 0.0 -40 -20 0 20 40 o T [C ] 60 80 100 120 -40 -20 0 20 40 o T [C ] 60 80 100 120 Voltage Gain vs. Frequency NJM2559 20 0.0 Gain [dB] VthH[V] T vs VthH -20 [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right -40 -60 105 25 -40 85 105 106 Frequency [Hz] - 10 - 107 Ver.0