LT1259/LT1260 Low Cost Dual and Triple 130MHz Current Feedback Amplifiers with Shutdown U FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO 90MHz Bandwidth on ±5V 0.1dB Gain Flatness > 30MHz Completely Off in Shutdown, 0µA Supply Current High Slew Rate: 1600V/µs Wide Supply Range: ±2V(4V) to ±15V(30V) 60mA Output Current Low Supply Current: 5mA/Amplifier Differential Gain: 0.016% Differential Phase: 0.075° Fast Turn-On Time: 100ns Fast Turn-Off Time: 40ns 14-Pin and 16-Pin Narrow SO Packages U APPLICATIO S ■ ■ ■ ■ When shut down, the LT1259/LT1260 amplifiers draw zero supply current and their outputs become high impedance. Only two LT1260s are required to make a complete 2-input RGB MUX and cable driver. These amplifiers turn on in only 100ns and turn off in 40ns, making them ideal in spread spectrum and portable equipment applications. The LT1259/LT1260 amplifiers are manufactured on Linear Technology’s proprietary complementary bipolar process. RGB Cable Drivers Spread Spectrum Amplifiers MUX Amplifiers Composite Video Cable Drivers Portable Equipment , LTC and LT are registered trademarks of Linear Technology Corporation. U ■ The LT ®1259 contains two independent 130MHz current feedback amplifiers, each with a shutdown pin. These amplifiers are designed for excellent linearity while driving cables and other low impedance loads. The LT1260 is a triple version especially suited to RGB video applications. These amplifiers operate on all supplies from single 5V to ±15V and draw only 5mA per amplifier when active. TYPICAL APPLICATIO 2-Input Video MUX Cable Driver A + RG 1.6k B EN A 75Ω 1/2 LT1259 – 75Ω CABLE RF 1.6k VOUT + VIN B RG 1.6k EN B CABLE OUTPUT VIN A CHANNEL SELECT Square Wave Response 75Ω 75Ω 1/2 LT1259 – LT1259/60 • TA01 RF 1.6k RL = 150Ω f = 30MHz LT1259/50 • TA02 1 LT1259/LT1260 W W W AXI U U ABSOLUTE RATI GS Supply Voltage ..................................................... ±18V Input Current ..................................................... ±15mA Output Short-Circuit Duration (Note 1) ......... Continuous Specified Temperature Range (Note 2) ....... 0°C to 70°C Operating Temperature Range ............... – 40°C to 85°C Storage Temperature Range ................ – 65°C to 150°C Junction Temperature (Note 4) ............................ 150°C Lead Temperature (Soldering, 10 sec).................. 300°C U U W PACKAGE/ORDER I FOR ATIO ORDER PART NUMBER TOP VIEW –IN A 1 +IN A 2 GND 3 GND 4 11 GND GND 5 10 V – +IN B 6 –IN B 7 A 14 EN A 13 OUT A 12 V + B TOP VIEW 9 OUT B 8 EN B LT1259CN LT1259CS LT1259IN LT1259IS N PACKAGE S PACKAGE 14-LEAD PLASTIC DIP 14-LEAD PLASTIC SOIC –IN R 1 +IN R 2 15 OUT R GND 3 14 V + –IN G 4 13 EN G +IN G 5 12 OUT G GND 6 11 V – +IN B 7 –IN B 8 R G B ORDER PART NUMBER 16 EN R LT1260CN LT1260CS LT1260IN LT1260IS 10 OUT B 9 EN B N PACKAGE S PACKAGE 16-LEAD PLASTIC DIP 16-LEAD PLASTIC SOIC TJMAX = 150°C, θJA = 70°C/W (N) TJMAX = 150°C, θJA = 110°C/W (S) TJMAX = 150°C, θJA = 70°C/W (N) TJMAX = 150°C, θJA = 100°C/W (S) Consult factory for Military grade parts. ELECTRICAL CHARACTERISTICS 0°C ≤ TA ≤ 70°C, each amplifier VCM = 0V, ±5V ≤ VS ≤ ±15V, EN pins = 0V, pulse tested, unless otherwise noted. SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS TA = 25°C MIN TYP 2 ● IIN+ Input Offset Voltage Drift Noninverting Input Current 30 0.5 ● TA = 25°C ● IIN– Inverting Input Current TA = 25°C 20 ● en + in – in RIN Input Noise Voltage Density Noninverting Input Noise Current Density Inverting Input Noise Current Density Input Resistance CIN Input Capacitance COUT VIN Output Capacitance Input Voltage Range f = 1kHz, RF = 1k, RG = 10Ω, RS = 0Ω f = 1kHz f = 1kHz VIN = ±13V, VS = ±15V VIN = ±3V, VS = ±5V Enabled Disabled Disabled VS = ±15V, TA = 25°C VS = ±5V, TA = 25°C ● ● ● ● 2 2 2 ±13 ±12 ±3 ±2 3.6 1.3 45 17 25 2 4 4.4 ±13.5 ±3.5 MAX 12 16 3 6 90 120 UNITS mV mV µV/°C µA µA µA µA nV/√Hz pA/√Hz pA/√Hz MΩ MΩ pF pF pF V V V V LT1259/LT1260 ELECTRICAL CHARACTERISTICS 0°C ≤ TA ≤ 70°C, each amplifier VCM = 0V, ±5V ≤ VS ≤ ±15V, EN pins = 0V, pulse tested, unless otherwise noted. SYMBOL VOUT PARAMETER Maximum Output Voltage Swing CONDITIONS VS = ±15V, RL = 1k VS = ±5V, RL = 150Ω, TA = 25°C CMRR Common-Mode Rejection Ratio VS = ±15V, VCM = ±13V, TA = 25°C VS = ±15V, VCM = ±12V VS = ±5V, VCM = ±3V, TA = 25°C VS = ±5V, VCM = ±2V VS = ±15V, VCM = ±13V, TA = 25°C VS = ±15V, VCM = ±12V VS = ±5V, VCM = ±3V, TA = 25°C VS = ±5V, VCM = ±2V VS = ±2V to ±15V, EN Pins at V –, TA = 25°C VS = ±3V to ±15V, EN Pins at V – VS = ±3V to ±15V, EN Pins at V –, TA = 25°C VS = ±3V to ±15V, EN Pins at V – VS = ±2V to ±15V, EN Pins at V –, TA = 25°C VS = ±3V to ±15V, EN Pins at V – VS = ±15V, VOUT = ±10V, RL = 1k VS = ±5V, VOUT = ±2V, RL = 150Ω VS = ±15V, VOUT = ±10V, RL = 1k VS = ±5V, VOUT = ±2V, RL = 150Ω RL = 0Ω, TA = 25°C VS = ±15V, VOUT = 0V, TA = 25°C ● ● Inverting Input Current Common-Mode Rejection PSRR Power Supply Rejection Ratio AV Noninverting Input Current Power Supply Rejection Inverting Input Current Power Supply Rejection Large-Signal Voltage Gain ROL Transresistance, ∆VOUT/∆IIN– IOUT IS Maximum Output Current Supply Current per Amplifier (Note 5) ● ● TYP ±14.0 ±3.7 63 3.5 4.5 ● ● 60 60 15 0.1 ● ● ● 57 57 120 100 30 72 69 300 200 60 5.0 ● Enable Pin Current Slew Rate (Note 6) Turn-On Delay Time (Note 7) Turn-Off Delay Time (Note 7) Small-Signal Rise and Fall Time Propagation Delay Small-Signal Overshoot Settling Time Differential Gain (Note 8) Differential Phase (Note 8) TA = 25°C AV = 10, TA = 25°C AV = 10, TA = 25°C VS = ±12V, RF = RG = 1.5k, RL = 150Ω VS = ±12V, RF = RG = 1.5k, RL = 150Ω VS = ±12V, RF = RG = 1.5k, RL = 150Ω 0.1%, VOUT = 10V, RF = RG = 1.5k, RL = 1k VS = ±12V, RF = RG = 1.5k, RL = 150Ω VS = ±12V, RF = RG = 1.5k, RL = 150Ω 4.5 3 1 60 ● SR tON tOFF tr, tf tS 900 10 10 15 15 80 ● ● ● MAX 69 ● VS = ±5V, VOUT = 0V, TA = 25°C VS = ±15V, EN Pin Voltage = 14.5V, RL = 150Ω ● ● VS = ±15V, Sink 1µA From EN Pin VS = ±15V, EN Pin Voltage = 0V, TA = 25°C Disable Supply Current per Amplifier MIN ±12.0 ±3.0 ±2.5 55 55 52 52 1600 100 40 4.2 4.7 5 75 0.016 0.075 65 75 5 5 7.5 7.9 6.7 16.7 2.7 200 300 400 150 UNITS V V V dB dB dB dB µA/V µA/V µA/V µA/V dB dB nA/V nA/V µA/V µA/V dB dB kΩ kΩ mA mA mA mA µA µA µA µA V/µs ns ns ns ns % ns % DEG – 40°C ≤ TA ≤ 85°C, each amplifier VCM = 0V, ±5V ≤ VS ≤ ±15V, EN pins = 0V, pulse tested, unless otherwise noted. SYMBOL VOS IIN+ IIN– RIN AV IS PARAMETER Input Offset Voltage Noninverting Input Current Inverting Input Current Input Resistance Large-Signal Gain Disable Supply Current per Amplifier Enable Pin Current CONDITIONS MIN ● ● ● VIN = ±3V, VS = ±5V ● ● VS = ±15V, EN Pin Voltage = 14.5V, RL = 150Ω VS = ±15V, EN Pin Voltage = 0V ● ● TYP MAX 18 7 130 1 55 19 350 UNITS mV µA µA MΩ dB µA µA 3 LT1259/LT1260 ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the specified operating temperature range. Note 1: A heat sink may be required depending on the power supply voltage and how many amplifiers have their outputs short circuited. Note 2: Commercial grade parts are designed to operate over the temperature range of – 40°C to 85°C but are neither tested nor guaranteed beyond 0°C to 70°C. Industrial grade parts specified and tested over – 40°C to 85°C are available on special request. Consult factory. Note 3: Ground pins are not internally connected. For best performance, connect to ground. Note 4: TJ is calculated from the ambient temperature TA and the power dissipation PD according to the following formulas: LT1259CN/LT1259IN: TJ = TA + (PD • 70°C/W) LT1259CS/LT1259IS: TJ = TA + (PD • 110°C/W) LT1260CNLT1260IN/: TJ = TA + (PD • 70°C/W) LT1260CS/LT1260IS: TJ = TA + (PD • 100°C/W) Note 5: The supply current of the LT1259/LT1260 has a negative temperature coefficient. See Typical Performance Characteristics. Note 6: Slew rate is measured at ±5V on a ±10V output signal while operating on ±15V supplies with RF = 1k, RG = 110Ω and RL = 1k. Note 7: Turn-on delay time is measured while operating on ±5V supplies with RF = 1k, RG = 110Ω and RL = 150Ω. The tON is measured from control input to appearance of 0.5V at the output, for VIN = 0.1V. Likewise, turn-off delay time is measured from control input to appearance of 0.5V on the output for VIN = 0.1V. Note 8: Differential gain and phase are measured using a Tektronix TSG120YC/NTSC signal generator and a Tektronix 1780R Video Measurement Set. The resolution of this equipment is 0.1% and 0.1°. Six identical amplifier stages were cascaded giving an effective resolution of 0.016% and 0.016°. U W TYPICAL AC PERFOR A CE VS (V) AV RL (Ω) RF (Ω) RG (Ω) SMALL SIGNAL – 3dB BW (MHz) SMALL SIGNAL 0.1dB BW (MHz) SMALL SIGNAL PEAKING (dB) ±12 2 150 1.5k 1.5k 130 53 0.1 ±5 2 150 1.1k 1.1k 93 40 0 ±12 10 150 1.1k 121 69 20 0.13 ±5 10 150 825 90.9 61 16 0 U W TYPICAL PERFOR A CE CHARACTERISTICS ±12V Frequency Response, AV = 10 ±12V Frequency Response, AV = 2 12 9 –60 23 8 –80 7 –100 GAIN (dB) GAIN 6 –120 5 4 VS = ±12V RL = 150Ω RF = RG = 1.5k 3 2 1 10 FREQUENCY (MHz) 100 LT1259/60 • TPC01 GAIN (dB) 24 0 PHASE VS = ±12V RL = 150Ω RF = 1.1k RG = 121Ω 22 –20 –40 –60 –80 21 –100 GAIN 20 –120 –140 19 –140 –160 18 –160 –180 17 –180 –200 16 –200 1 10 FREQUENCY (MHz) 100 LT1259/60 • TPC01 PHASE (DEG) 25 –40 PHASE 10 PHASE (DEG) –20 11 4 26 0 LT1259/LT1260 U W TYPICAL PERFOR A CE CHARACTERISTICS ±5V Frequency Response, AV = 2 ±5V Frequency Response, AV = 10 12 0 26 0 11 –20 25 –20 10 –40 24 –60 23 GAIN (dB) –100 GAIN 6 –120 5 VS = ±5V RL = 150Ω RF = RG = 1.1k 3 2 1 10 FREQUENCY (MHz) –80 21 –100 GAIN 20 –120 19 –160 18 –180 17 –200 16 100 –140 VS = ±5V RL = 150Ω RF = 825Ω RG = 90.9Ω 1 –160 –180 –200 10 FREQUENCY (MHz) LT1259/60 • TPC03 Total Harmonic Distortion vs Frequency 0.01 VO = 1VRMS –40 –50 2ND –60 3RD 100 1k 10k FREQUENCY (Hz) 100k 30 20 10 100k 1M 10M FREQUENCY (Hz) 100M LTC1259/60 • TPC08 100 Output Impedance vs Frequency 100 –in OUTPUT IMPEDANCE (Ω) POSITIVE 40 10 FREQUENCY (MHz) VS = ±15V SPOT NOISE (nV/√Hz OR pA/√Hz) NEGATIVE 50 AV = 2 LT12359/60 • TPC07 100 80 0 10k 1 100 Spot Noise Voltage and Current vs Frequency 60 AV = 1 10 LT12359/60 • TPC06 Power Supply Rejection vs Frequency VS = ±15V RL = 1OOΩ RF = RG = 1k AV = 10 0 10 FREQUENCY (MHz) 1 LT1259/60 • TPC05 70 15 5 –70 10 VS = ±15V RL = 1k RF = 2k 20 OUTPUT VOLTAGE (VP-P) VO = 6VRMS DISTORTION (dBc) TOTAL HARMONIC DISTORTION (%) 25 VS = ±12V VO = 2VP-P AV = 10dB RL = 100Ω RF = 1.5k –30 0.001 POWER SUPPLY REJECTION (dB) Maximum Undistorted Output vs Frequency –20 VS = ±12V RL = 400Ω RF = RG = 1.5k 100 LT1259/60 • TPC04 2nd and 3rd Harmonic Distortion vs Frequency 0.1 –60 22 –140 4 –40 PHASE PHASE (DEG) –80 7 PHASE (DEG) 8 GAIN (dB) PHASE 9 10 en RF = RG = 2k 10 1 +in 1 10 100 1k 10k FREQUENCY (Hz) 100k LT1259/60 • TPC09 0.1 10k 100k 1M 10M FREQUENCY (Hz) 100M LT1259/60 • TPC10 5 LT1259/LT1260 U W TYPICAL PERFOR A CE CHARACTERISTICS Output Impedance in Shutdown vs Frequency Maximum Capacitive Load vs Feedback Resistor Supply Current vs Supply Voltage 1000 7 VS = ±15 AV = 1 RF = 1.5k 1 VS = ±5V VS = ±15V SUPPLY CURRENT (mA) 10 100 5 25°C 4 125°C 3 2 AV = 2 RL = 150Ω PEAKING ≤ 5dB 0.1 100k 1M 10M FREQUENCY (Hz) 10 100M 1 2 3 4 5 FEEDBACK RESISTOR (kΩ) LT1259/60 • TPC11 0 6 0 COMMON-MODE RANGE (V) –0.5 0.5 V + = 2V TO 18V –1.0 –1.5 –2.0 2.0 1.5 1.0 V – = –2V TO –18V 0.5 V– –50 –25 50 25 75 0 TEMPERATURE (°C) 100 125 6 8 10 12 14 SUPPLY VOLTAGE (±V) V– –50 –25 Settling Time to 10mV vs Output Step 50 25 0 75 TEMPERATURE (°C) 100 125 60 50 40 – 50 – 25 0 25 50 75 100 125 150 TEMPERATURE (°C) LT1259/60 • TPC15 Small-Signal Rise Time 10 VS = ±12V RF = 1.5k 8 OUTPUT STEP (V) 6 4 2 NONINVERTING 0 INVERTING –2 –4 –6 –8 –10 0 100 200 300 400 500 600 700 800 SETTLING TIME (ns) LT1259/60 • TPC17 6 18 70 LT1259/60 • TPC16 LT1259/60 • TPC14 16 80 OUTPUT SHORT-CIRCUIT CURRENT (mA) RL = ∞ ±2V ≤ VS ≤ ±18V 1.0 4 Output Short-Circuit Current vs Junction Temperature V+ –1.0 2 LT1259/60 • TPC13 Input Common-Mode Limit vs Temperature V+ OUTPUT SATURATION VOLTAGE (V) 1 LT1259/60 • TPC12 Output Saturation Voltage vs Temperature –0.5 –55°C 6 LOAD CAPACITANCE (pF) OUTPUT IMPEDANCE (kΩ) 100 VS = ±15V AV = 2 RF = RG = 1.6k RL = 150Ω LT1259/60 G19 LT1259/LT1260 W W SI PLIFIED SCHE ATIC , each amplifier +IN V+ –IN OUT EN V– LT1259/60 • SS U W U U APPLICATIO S I FOR ATIO Feedback Resistor Selection The small-signal bandwidth of the LT1259/ LT1260 are set by the external feedback resistors and the internal junction capacitors. As a result, the bandwidth is a function of the supply voltage, the value of the feedback resistor, the closed-loop gain and the load resistor. The LT1259/LT1260 have been optimized for ±5V supply operation and have a – 3dB bandwidth of 90MHz. See resistor selection guide in Typical AC Performance table. Capacitance on the Inverting Input Current feedback amplifiers require resistive feedback from the output to the inverting input for stable operation. Take care to minimize the stray capacitance between the output and the inverting input. Capacitance on the inverting input to ground will cause peaking in the frequency response (and overshoot in the transient response). See the section on Demo Board Information. Capacitive Loads The LT1259/LT1260 can drive capacitive loads directly when the proper value of feedback resistor is used. The graph of Maximum Capacitive Load vs Feedback Resistor should be used to select the appropriate value. The value shown is for ≤ 5dB peaking when driving a 150Ω load at a gain of 2. This is a worst case condition. The amplifier is more stable at higher gains. Alternatively, a small resistor (10Ω to 20Ω) can be put in series with the output to isolate the capacitive load from the amplifier output. This has the advantage that the amplifier bandwidth is only reduced when the capacitive load is present. The disadvantage is that the gain is a function of the load resistance. Power Supplies The LT1259/LT1260 will operate from single or split supplies from ±2V (4V total) to ±15V (30V total). It is not necessary to use equal value split supplies, however the offset voltage and inverting input bias current will change. The offset voltage changes about 500µV per volt of supply mismatch. The inverting bias current can change as much as 5µA per volt of supply mismatch though typically, the change is about 0.1µA per volt. Slew Rate The slew rate of a current feedback amplifier is not independent of the amplifier gain configuration the way slew rate is in a traditional op amp. This is because both the input stage and the output stage have slew rate limitations. In the inverting mode, and for higher gains in the noninverting mode, the signal amplitude between the input pins is small and the overall slew rate is that of the output stage. For gains less than ten in the noninverting mode, the overall slew rate is limited by the input stage. 7 LT1259/LT1260 U W U U APPLICATIO S I FOR ATIO The input slew rate of the LT1259/LT1260 is approximately 270V/µs and is set by internal currents and capacitances. The output slew rate is set by the value of the feedback resistors and internal capacitances. At a gain of 10 with at 1k feedback resistor and ±15V supplies, the output slew rate is typically 1600V/µs. Larger feedback resistors will reduce the slew rate as will lower supply voltages, similar to the way the bandwidth is reduced. The graph of Maximum Undistorted Output vs Frequency relates the slew rate limitations to sinusoidal input for various gains. looks like a 4.4pF capacitor in parallel with a 75k resistor, excluding feedback resistor effects. These amplifiers are designed to operate with open drain logic: the EN pins have internal pullups and the amplifiers draw zero current when these pins are high. To activate an amplifier, its EN pin is pulled to ground (or at least 2V below the positive supply). The enable pin current is approximately 60µA when activated. Input referred switching transients with no input signal applied are only 35mV positive and 80mV negative with RL = 100Ω. Output Switching Transient Large-Signal Transient Response, AV = 2 EN OUTPUT VS = ±5V VIN = 0V VS = ±15V RF = RG = 1.6k RL = 400Ω LT1259/LT1260 • AI01 Large-Signal Transient Response, AV = 10 LT1259/LT1260 • AI03 RF = RG = 1.6k RL = 100Ω The enable/disable times are very fast when driven from standard 5V logic. The amplifier enables in about 100ns (50% point to 50% point) while operating on ±5V supplies. Likewise the disable time is approximately 40ns (50% point to 50% point) or 75ns to 90% of the final value. The output decay time is set by the output capacitance and load resistor. Amplifier Enable Time, AV = 10 OUTPUT VS = ±15V RF = 1k RG = 110Ω RL = 400Ω EN LT1259/LT1260 • AI02 Enable/Disable The LT1259/LT1260 amplifiers have a unique high impedance, zero supply current mode which is controlled by independent EN pins. When disabled, an amplifier output 8 VS = ±5V VIN = 0.1V RF = 1k RG = 110Ω RL = 150Ω LT1259/LT1260 • AI04 LT1259/LT1260 U W U U APPLICATIO S I FOR ATIO Amplifier Disable Time, AV = 10 Amplifier Enable/Disable Time, AV = 2 EN EN OUTPUT OUTPUT VS = ±5V VIN = 0.1V RF = 1k RG = 110Ω VS = ±5V VIN = 2VPP at 2MHz LT1259/LT1260 • AI05 RL = 150Ω Differential Input Signal Swing The differential input swing is limited to about ±6V by an ESD protection device connected between the inputs. In normal operation, the differential voltage between the RF = RG = 1.6k RL = 100Ω LT1259/LT1260 • AI06 input pins is small, so this clamp has no effect. In the disabled mode however, the differential swing can be the same as the input swing, and the clamp voltage will set the maximum allowable input voltage. U TYPICAL APPLICATIO S 2-Input Video MUX Cable Driver The application on the first page shows a low cost, 2input video MUX cable driver. The scope photo displays the cable output of a 30MHz square wave driving 150Ω. In this circuit the active amplifier is loaded by RF and RG of the disabled amplifier, but in this case it only causes a 1.2% gain error. The gain error can be eliminated by 2-Input Video MUX Switching Response EN A EN B VS = ±5V VIN A = VIN 2 = 2VPP at 2MHz RF = RG = 1.6k RL = 100Ω configuring each amplifier as a unity-gain follower. The switching time between channels is 100ns when both EN A and EN B are driven. 2-Input RGB MUX Cable Driver Demonstration Board A complete 2-input RGB MUX has been fabricated on PC Demo Board #039A. The board incorporates two LT1260s with outputs summed through 75Ω back termination resistors as shown in the schematic. There are several things to note about Demo Board #039A: 1. The feedback resistors of the disabled LT1260 load the enabled amplifier and cause a small (1% to 2%) gain error depending on the values of RF and RG. Configure the amplifiers as unity-gain followers to eliminate this error. 2. The feedback node has minimum trace length connecting RF and RG to minimize stray capacitance. 3. Ground plane is pulled away from RF and RG on both sides of the board to minimize stray capacitance. LT1259/LT1260 • TA03 9 LT1259/LT1260 U TYPICAL APPLICATIO S RGB Demo Board All Hostile Crosstalk 0 ALL HOSTILE CROSSTALK (dB) 4. Capacitors C1 and C6 are optional and only needed to reduce overshoot when EN 1 or EN 2 are activated with a long inductive ground wire. 5. The R, G and B amplifiers have slightly different frequency responses due to different output trace routing to RF (between pins 3 and 4). All amplifiers have slightly less bandwidth in PCB #039 than when measured alone as shown in the Typical AC Performance table. 6. Part-to-part variation can change the peaking by ±0.25dB. VS = ±12V RL = 100Ω RF = RG = 1.6k RS = 10Ω –20 –40 G –60 B R –80 –100 10 FREQUENCY (MHz) 1 100 LT1259/60 • TA06 RGB Demo Board Gain vs Frequency 4 VS = ±12V RL = 150Ω RF = RG = 1.6k GAIN (dB) 2 P-DIP PC Board #039 R 0 G EN2 B R1 –2 EN1 V+ V– U1 R1 R2 R13 –4 G1 –6 1 10 FREQUENCY (MHz) 100 GND C1 R3 R4 R14 C2 R C3 R15 R5 R6 LT1259/60 • TA04 C4 B1 C6 RGB Demo Board Gain vs Frequency 4 R2 VS = ±5V RL = 150Ω RF = RG = 1.1k 2 GAIN (dB) R, B G2 G U2 C5 R16 C7 B R17 C8 R18 R11 R12 (408) 432-1900 LT1260 RGB AMPLIFIER DEMONSTRATION BOARD –2 B2 –4 LT1259/60 • TA07 –6 1 10 FREQUENCY (MHz) 100 LT1259/60 • TA05 10 R7 R8 R9 R10 0 G LT1259/LT1260 U PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted. N Package 14-Lead PDIP (Narrow 0.300) (LTC DWG # 05-08-1510) 0.130 ± 0.005 (3.302 ± 0.127) 0.300 – 0.325 (7.620 – 8.255) 0.045 – 0.065 (1.143 – 1.651) 0.015 (0.380) MIN +0.025 0.325 –0.015 0.005 (0.125) MIN 0.100 ± 0.010 (2.540 ± 0.254) *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) ( 14 13 12 11 10 9 8 1 2 3 4 5 6 7 0.255 ± 0.015* 0.065 (6.477 ± 0.381) (1.651) TYP 0.009 – 0.015 (0.229 – 0.381) +0.635 8.255 –0.381 0.770* (19.558) MAX ) 0.018 ± 0.003 (0.457 ± 0.076) 0.125 (3.175) MIN N14 0695 N Package 16-Lead PDIP (Narrow 0.300) (LTC DWG # 05-08-1510) 0.130 ± 0.005 (3.302 ± 0.127) 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) ( +0.635 –0.381 0.045 – 0.065 (1.143 – 1.651) 0.015 (0.381) MIN 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 0.255 ± 0.015* 0.065 (6.477 ± 0.381) (1.651) TYP +0.025 0.325 –0.015 8.255 0.770* (19.558) MAX ) 0.005 (0.127) MIN 0.100 ± 0.010 (2.540 ± 0.254) 0.125 (3.175) MIN 0.018 ± 0.003 (0.457 ± 0.076) N16 0695 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) S Package 14-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 0.337 – 0.344* (8.560 – 8.738) 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.053 – 0.069 (1.346 – 1.752) 13 14 0.004 – 0.010 (0.101 – 0.254) 12 11 10 8 9 0° – 8° TYP 0.014 – 0.019 (0.355 – 0.483) 0.016 – 0.050 0.406 – 1.270 *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 0.228 – 0.244 (5.791 – 6.197) 0.050 (1.270) TYP 0.150 – 0.157** (3.810 – 3.988) 1 3 2 5 4 S14 0695 7 6 S Package 16-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 0.386 – 0.394* (9.804 – 10.008) 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.053 – 0.069 (1.346 – 1.752) 0.004 – 0.010 (0.101 – 0.254) 16 15 14 13 12 11 10 9 0° – 8° TYP 0.016 – 0.050 0.406 – 1.270 0.014 – 0.019 (0.355 – 0.483) *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 0.050 (1.270) TYP 0.150 – 0.157** (3.810 – 3.988) 0.228 – 0.244 (5.791 – 6.197) 1 2 3 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 4 5 6 7 8 S16 0695 11 LT1259/LT1260 U TYPICAL APPLICATIO Demonstration PC Board Schematic #039 C1* 0.01µF R1 EN 1 EN 2 V+ V– GND R2 1 R 2 R1 + 3 R3 LT1260 4 R4 G + R6 C2 0.1µF R14 75Ω 12 VOUT GREEN 10 + B 8 – C3 0.1µF R15 75Ω 9 VOUT BLUE R5 C4 4.7µF + C6* 0.01µF R7 1 2 3 R9 4 5 G2 R10 R12 C5 4.7µF 16 – R + LT1260 8 R16 75Ω 15 14 C7 0.1µF 13 – G + R17 75Ω 12 11 6 7 B2 + R8 R2 VOUT RED 14 11 6 7 B1 R13 75Ω 15 13 – 5 G1 16 – C8 0.1µF 10 + B – 9 R18 75Ω LT1259/60 • TA08 R11 *OPTIONAL RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1203/LT1205 150MHz Video Multiplexers 2:1 and Dual 2:1 MUXes with 25ns Switch Time LT1204 4-Input Video MUX with Current Feedback Amplifier Cascadable Enable 64:1 Multiplexing LT1227 140MHz Current Feedback Amplifier 1100V/µs Slew Rate, Shutdown Mode LT1252/LT1253/LT1254 Low Cost Video Amplifiers Single, Dual and Quad Current Feedback Amplifiers 12 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 ● (408) 432-1900 FAX: (408) 434-0507● TELEX: 499-3977 ● www.linear-tech.com 125960fas, sn125960 LT/TP 1197 REV A 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1993