Description
Burr Brown Products from Texas Instruments OPA3875 SBOS341B – DECEMBER 2006 – REVISED DECEMBER 2006 Triple 2:1 High-Speed Video Multiplexer FEATURES • • • • • • • • • • • • • 700MHz SMALL-SIGNAL BANDWIDTH (AV = +2) 425MHz, 4VPP BANDWIDTH 0.1dB GAIN FLATNESS to 150MHz 4ns CHANNEL SWITCHING TIME LOW SWITCHING GLITCH: 40mVPP 3100V/µs SLEW RATE 0.025%/0.025° DIFFERENTIAL GAIN, PHASE HIGH GAIN ACCURACY: 2.0V/V ±0.4% DESCRIPTION The OPA3875 offers a very wideband, 3-channel, 2:1 multiplexer in a small SSOP-16 package. Using only 11mA/ch, the OPA3875 provides three, gain of +2, video amplifier channels with > 400MHz large-signal bandwidth (4VPP). Gain accuracy and switching glitch are improved over earlier solutions using a new (patented) input stage switching approach. This technique uses current steering as the input switch while maintaining an overall closed-loop design. Gain matching between each of the 3-channel pairs is also significantly improved using this technique (<0.2% gain mismatch). With >700MHz small-signal bandwidth at a gain of 2, the OPA3875 gives a typical 0.1dB gain flatness to > 150MHz. System power may be reduced using the chip enable feature for the OPA3875. Taking the chip enable line high powers down the OPA3875 to <900µA total supply current. Muxing multiple OPA3875 outputs together, then using the chip enable to select which channels are active, increases the number of possible inputs to the 3-channel outputs. Where a single channel of the OPA3875 is required, consider the OPA875. OPA3875 SELECT 1 75W APPLICATIONS RGB SWITCHING LCD PROJECTOR INPUT SELECT WORKSTATION GRAPHICS TRIPLE ADC INPUT MUX DROP-IN UPGRADE TO LT1675 +5V 75W RGB Channel 0 75W 75W ENABLE 0 0 1 RED OUT GREEN OUT R0 R1 Off G0 G1 Off BLUE OUT B0 B1 Off 75W OPA3875 (Patented) RGB Out 0 X 75W RGB Channel 1 75W OPA3875 RELATED PRODUCTS 75W DESCRIPTION OPA875 OPA4872 OPA3693 Single-Channel OPA3875 Quad 510MHz 4:1 Multiplexer Triple 650MHz Video Buffer 75W -5V Channel Select EN RGB Switching Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2006, Texas Instruments Incorporated OPA3875 www.ti.com SBOS341B – DECEMBER 2006 – REVISED DECEMBER 2006 This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. ORDERING INFORMATION (1) PACKAGE DESIGNATOR DBQ SPECIFIED TEMPERATURE RANGE –45°C to +85°C PACKAGE MARKING OP3875 ORDERING NUMBER OPA3875IDBQ OPA3875IDBQR TRANSPORT MEDIA, QUANTITY Rails, 75 Tape and Reel, 2500 PRODUCT OPA3875 (1) PACKAGE-LEAD SSOP-16 For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. ABSOLUTE MAXIMUM RATINGS Over operating temperature range, unless otherwise noted. OPA3875 Power Supply Internal Power Dissipation Input Voltage Range Storage Temperature Range Lead Temperature (soldering, 10s) Operating Junction Temperature Continuous Operating Junction Temperature ESD Rating: Human Body Model (HBM) Charge Device Model (CDM) Machine Model (MM) 2000 1500 200 V V V ±VS –40 to +125 +260 +150 +140 ±6.5 See Thermal Analysis V °C °C °C °C UNIT V PIN CONFIGURATION Top View OPA3875 SSOP R0 G0 B0 GND GND R1 G1 B1 1 2 3 4 5 6 7 8 x2 x2 x2 16 V+ 15 OUT_R 14 OUT_G 13 OUT_B 12 V11 V10 SEL 9 EN SSOP-16 2 Submit Documentation Feedback OPA3875 www.ti.com SBOS341B – DECEMBER 2006 – REVISED DECEMBER 2006 ELECTRICAL CHARACTERISTICS: VS = ±5V At G = +2, RL = 150Ω, unless otherwise noted. OPA3875 TYP PARAMETER AC PERFORMANCE Small-Signal Bandwidth Large-Signal Bandwidth Bandwidth for 0.1dB Gain Flatness Maximum Small-Signal Gain Minimum Small-Signal Gain SFDR Input Voltage Noise Input Current Noise NTSC Differential Gain NTSC Differential Phase Slew Rate Rise Time and Fall Time CONDITIONS See Figure 1 VO = 200mVPP, RL = 150Ω VO = 4VPP, RL = 150Ω VO = 200mVPP VO = 200mVPP, RL = 150Ω, f = 5MHz VO = 200mVPP, RL = 150Ω, f = 5MHz 10MHz, VO = 2VPP, RL = 150Ω f > 100kHz f > 100kHz RL = 150Ω RL = 150Ω VO = ±2V VO = 0.5V Step VO = 1.4V Step CHANNEL-TO-CHANNEL PERFORMANCE Gain Match Channel to Channel, RL = 150Ω All inputs, RL = 150Ω Output Offset Voltage Mismatch All Hostile Crosstalk Channel-to-Channel Crosstalk CHANNEL AND CHIP-SELECT PERFORMANCE SEL (Channel Select) Swtiching Time EN (Chip Select) Switching Time RL = 150Ω Turn On Turn Off SEL (Channel Select) Switching Glitch EN (Chip-Select) Switching Glitch All Hostile Disable Feedthrough Maximum Logic 0 Minimum Logic 1 EN Logic Input Current SEL Logic Input Current DC PERFORMANCE Output Offset Voltage Average Output Offset Voltage Drift Input Bias Current Average Input Bias Current Drift Gain Error (from 2V/V) INPUT Input Voltage Range Input Resistance Input Capacitance Channel Selected Channel Deselected Chip Disabled ±2.8 1.75 0.9 0.9 0.9 V MΩ pF pF pF typ typ typ typ typ C C C C C VO = ±2V 0.4 1.4 RIN = 0Ω, G = +2V/V RIN = 0Ω, G = +2V/V ±5 ±18 ±2.5 ±14 ±15.8 ±50 ±19.5 ±40 1.5 ±17 ±50 ±20.5 ±40 1.6 mV µV/°C µA nA/°C % max max max max max A B A B A All Inputs to Ground, At Matched Load All Inputs to Ground, At Matched Load 50MHz, Chip Disabled (EN = High) EN, SEL EN, SEL 0V to 4.5V 0V to 4.5V 75 160 4 9 60 40 15 –68 0.8 2.0 100 200 0.8 2.0 125 250 0.8 2.0 150 300 ns ns ns mVPP mVPP dB V V µA µA typ typ typ typ typ typ max min max max C C C C C C B B A A All three outputs f = 50MHz, RL = 150Ω f = 50MHz, RL = 150Ω ±0.05 ±0.1 ±3 -50 –58 ±0.25 ±0.5 ±9 ±0.3 ±0.6 ±10 ±0.35 ±0.7 ±12 % % mV dB dB max max max typ typ A A A C C 700 425 150 2.0 2.0 –68 6.7 3.8 0.025 0.025 3100 460 600 2800 2700 2600 2.02 1.98 –65 7.0 4.2 2.03 1.97 –64 7.2 4.6 2.05 1.95 –63 7.4 4.9 525 390 515 380 505 370 MHz MHz MHz V/V V/V dBc nV/√Hz pA/√Hz % ° V/µs ps ps min min typ max min max max max typ typ min typ typ B B C B B B B B C C B C C +25°C MIN/MAX OVER TEMPERATURE +25°C (2) 0°C to 70°C (3) –40°C to +85°C (3) UNITS MIN/ MAX TEST LEVEL (1) (1) (2) (3) Test levels: (A) 100% tested at +25°C. Over temperature limits set by characterization and simulation. (B) Limits set by characterization and simulation. (C) Typical value only for information. Junction temperature = ambient for +25°C tested specifications. Junction temperature = ambient at low temperature limit; junction temperature = ambient +36°C at high temperature limit for over temperature specifications. Submit Documentation Feedback 3 OPA3875 www.ti.com SBOS341B – DECEMBER 2006 – REVISED DECEMBER 2006 ELECTRICAL CHARACTERISTICS: VS = ±5V (continued) At G = +2, RL = 150Ω, unless otherwise noted. OPA3875 TYP PARAMETER OUTPUT Output Voltage Range Output Current Output Resistance VO = 0V, Linear Operation Chip enabled Chip Disabled, Maximum Chip Disabled, Minumum Output Capacitance POWER SUPPLY Specified Operating Voltage Minimum Operating Voltage Maximum Operating Voltage Maximum Quiescent Current Minimum Quiescent Current Maximum Quiescent Current Power-Supply Rejection Ratio (+PSRR) (–PSRR) THERMAL CHARACTERISTICS Specified Operating Range D Package Thermal Resistance θJA DBQ SSOP-16 Junction-to-Ambient 85 °C/W typ C –40 to +85 °C typ C Chip Selected, VS = ±5V Chip Selected, VS = ±5V Chip Deselected Input-Referred Input-Referred 33 33 0.9 56 55 ±5 ±3.0 ±6.3 34 31 1.2 50 51 ±3.0 ±6.3 35 30 1.4 48 49 ±3.0 ±6.3 36 27 1.5 47 48 V V V mA mA mA dB dB typ min max max min max min min C B A A A A A A Chip Disabled ±3.5 ±70 0.3 800 800 2 912 688 915 685 918 682 ±3.4 ±50 ±3.35 ±45 ±3.3 ±40 V mA Ω Ω Ω pF min min typ max min typ A A C A A C CONDITIONS +25°C MIN/MAX OVER TEMPERATURE +25°C (2) 0°C to 70°C (3) –40°C to +85°C (3) UNITS MIN/ MAX TEST LEVEL (1) 4 Submit Documentation Feedback OPA3875 www.ti.com SBOS341B – DECEMBER 2006 – REVISED DECEMBER 2006 TYPICAL CHARACTERISTICS: VS = ±5V At G = +2 and RL = 150Ω, unless otherwise noted. SMALL-SIGNAL FREQUENCY RESPONSE 7 6 1 Frequency Response Left Scale 0.3 8 7 LARGE-SIGNAL FREQUENCY RESPONSE RL = 150W G = +2V/V Normalized Gain Flatness (dB) 0.2 0.1 0 6 5 4 3 2 1 0 -1 -2 -3 0 100 200 300 400 500 600 700 Frequency (100MHz/div) 800 900 1000 VO = 5VPP VO = 2VPP VO = 4VPP VO = 1VPP Gain (dB) 4 3 2 1 0 1M 10M 100M Frequency (Hz) 1G VO = 500mVPP RL = 150W G = +2V/V Gain Flatness Right Scale -0.1 -0.2 -0.3 -0.4 Figure 1. NONINVERTING PULSE RESPONSE 0.5 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 Time (1ns/div) 100MHz Square-Wave Input Small-Signal 0.4VPP Left Scale RL = 150W G = +2V/V 2.5 2.0 Large-Signal 4VPP Right Scale 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 -2.5 Gain (dB) Figure 2. ALL INPUT DISABLE FEEDTHROUGH vs FREQUENCY -20 Large-Signal Output Voltage (V) Small-Signal Output Voltage (V) -30 -40 Input-Referred EN = +5V Isolation (dB) -50 -60 -70 -80 -90 -100 -110 1M 10M 100M Frequency (Hz) 1G Figure 3. RECOMMENDED RS vs CAPACITIVE LOAD 80 8 7 0.1dB Peaking Targeted 70 60 50 Figure 4. FREQUENCY RESPONSE vs CAPACITIVE LOAD Gain to Capacitive Load (dB) 6 5 4 3 2 1 0 -1 75W 75W x2 CL = 10pF RS

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OPA4872

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