ZXFV201, ZXFV203 QUAD AND TRIPLE VIDEO AMPLIFIER Device description The ZXFV201/203 are quad and triple, high speed amplifiers designed for video and other high speed applications. They feature low differential gain and phase performance. Together with high output drive and slew rate capability, this brings high performance to video applications. The ZXFV203 is ideal for RGB buffer applications, with the ZXFV201 ideal for RGSB applications. Features and benefits · Unity gain bandwidth 300MHz · Slew rate 400V/s Connection diagram · Differential gain 0.01% · Differential phase 0.01⬚ · Output current 40mA · Characterized up to 300pF load · ±5 Volt supply · Supply current 7mA per amplifier · 14 pin SO package Applications · Video gain stages ZXFV201 · CCTV buffer · Video distribution Connection diagram · RGB buffering · Home theatre · Fast ADC signal input drive · Cable driving Ordering Information Part number Container Increment ZXFV201N14TA reel 7” 500 ZXFV201N14TC reel 13” 2500 ZXFV203N14TA reel 7” 500 ZXFV203 ISSUE 3 - DECEMBER 2003 1 SEMICONDUCTORS ZXFV201, ZXFV203 ABSOLUTE MAXIMUM RATINGS Over Operating Free-Air Temperature (Unless Otherwise Stated (1) Supply voltage, V+ to VInput voltage (V-IN, V+IN)* -0.5V to +11V V- -0.5V to V+ +0.5V Differential input voltage, VID ±3V Inverting input current (I-IN) (2) ±5 mA Output current, (continuous, TJ < 110°C) ±60 mA Internal power dissipation See power dissipation derating table Operating free air temperature range, TA -40 to 85°C Storage temperature range -65°C to +150°C Operating ambient junction temperature TJMAX 150°C Notes: (1) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. (2) At high closed loop gains and low gain setting resistors care must be taken if large input signals are applied to the device which cause the output stage to saturate for extended periods of time. (3) The power dissipation of the device when loaded must be designed to keep the device junction temperature below TJMAX. Package Theta-ja Power rating at 25°C SO14 120°C/W 1.04W *During power-up and power-down, these voltage ratings require that signals be applied only when the power supply is connected. ESD: This device is sensitive to static discharge and proper handling precautions are required. ELECTRICAL CHARACTERISTICS ±5V power supplies, Tamb= 25°C unless otherwise stated. Rf = 1k⍀, RL = 150⍀, CL⭐ = 10pF PARAMETER Supply voltage V+ operating range Supply voltage V- operating range Supply current/per channel Input common mode voltage range Input offset voltage Output offset voltage Input bias current, non-inverting input Input resistance Output voltage swing Output drive current Positive PSRR Negative PSRR Bandwidth –3dB Bandwidth –0.1dB Slew rate Rise time Fall time Propagation delay Differential gain Differential phase CONDITIONS TEST MIN TYP MAX UNIT 4.75 -5.25 5.0 5 -5 7.5 ⫾3 1 2 5 2 ⫾3 5.25 -4.75 10 V V mA V mV mV A M⍀ V mA dB dB MHz MHz V/s P P P P P P P I OUT = 40mA P V IN = 3V P ⌬V+ = ±0.25 P ⌬V- = ±0.25 Av= +1, Vout = 200mV pk-pk C Av= +1, Vout = 200mV pk-pk C Av= +1 C Av = +2 Av = +10 C V OUT = ⫾1 V, 10% - 90% C V OUT = ⫾1 V, 10% - 90% C V OUT = ⫾2 V, 50% 3.58MHz (NTSC) and C 4.43MHz (PAL) DC = -714 to C +714 mV, 280mVpp 1.5 40 49 49 57 57 300 30 400 400 400 4.0 3.2 4.0 0.02 0.02 10 20 10 6.5 ns ns ns % deg Test – P = production tested. C = characterised ISSUE 3 - DECEMBER 2003 SEMICONDUCTORS 2 ZXFV201, ZXFV203 Figure 1: Typical video signal application circuit, gain = 2 (overall gain = 1 for 75 load) Figure 2: Pulse response, unity gain, 1V pk-pk, RF = 510 ISSUE 3 - DECEMBER 2003 3 SEMICONDUCTORS ZXFV201, ZXFV203 Figure 3: Graphs of gain and phase vs frequncy (RL=150 ) APPLICATIONS INFORMATION Introduction Note particularly that the inverting input of this current feedback type of amplifier is sensitive to small amounts of capacitance to ground which occur as part of the practical circuit board layout. This capacitance affects bandwidth, frequency response peaking and pulse overshoot. Therefore to minimise this capacitance, the feedback components R2 and R3 of Figure1 should be positioned as close as possible to the inverting input connection. A typical circuit application is shown in Figure 1, above. This is suitable for 75⍀ transmission line connections at both the input and the output and is useful for distribution of wide-band signals such as video via cables. The 75⍀ reverse terminating resistor R4 gives the correct matching condition to a terminated video cable. The amplifier load is then 150⍀ in parallel with the local feedback network. The wide bandwidth of this device necessitates some care in the layout of the printed circuit. A continuous ground plane is required under the device and its signal connection paths, to provide the shortest possible ground return paths for signals and power supply filtering. A double-sided or multi-layer PCB construction is required, with plated-through via holes providing closely spaced low-inductance connections from some components to the continuous ground plane. The frequency response and pulse response will vary according to particular values of resistors and layout capacitance. The response can be tailored for the application to some extent by choice of the value of feedback resistor. Figure 2 shows an oscilloscope display of the pulse response for a practical double sided printed circuit board where RF = 510⍀. For the power supply filtering, low inductance surface mount capacitors are normally required. It has been found that very good RF decoupling is provided on each supply using a 1000pF NPO size 0805 or smaller ceramic surface mount capacitor, closest to the device pin, with an adjacent 0.1uF X7R capacitor. Other configurations are possible and it may be found that a single 0.01uF X7R capacitor on each supply gives good results. However this should be supported by larger decoupling capacitors elsewhere on the printed circuit board. Values of 1 to 10µF are recommended, particularly where the voltage regulators are located more than a few inches from the device. These larger capacitors are recommended to be solid tantalum electrolytic or ceramic types. ISSUE 3 - DECEMBER 2003 SEMICONDUCTORS 4 ZXFV201, ZXFV203 Notes ISSUE 3 - DECEMBER 2003 5 SEMICONDUCTORS ZXFV201, ZXFV203 Notes ISSUE 3 - DECEMBER 2003 SEMICONDUCTORS 6 ZXFV201, ZXFV203 Notes ISSUE 3 - DECEMBER 2003 7 SEMICONDUCTORS ZXFV201, ZXFV203 PACKAGE OUTLINE PACKAGE DIMENSIONS Millimeters Inches DIM Min Max Min Max A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.004 b 0.33 0.51 c 0.19 D 8.55 e Millimeters Inches DIM Min Max Min Max E 3.80 4.00 0.15 0.157 0.01 H 5.80 6.20 0.228 0.244 0.013 0.020 L 0.40 1.27 0.016 0.05 0.25 0.008 0.010 0° 8° 0° 8° 8.75 0.337 0.344 - - - - - - - - - - 1.27 BSC 0.05 BSC © Zetex plc 2003 Europe Americas Asia Pacific Corporate Headquaters Zetex GmbH Streitfeldstraße 19 D-81673 München Germany Zetex Inc 700 Veterans Memorial Hwy Hauppauge, NY 11788 USA Zetex (Asia) Ltd 3701-04 Metroplaza Tower 1 Hing Fong Road, Kwai Fong Hong Kong Zetex plc Fields New Road, Chadderton Oldham, OL9 8NP United Kingdom Telefon: (49) 89 45 49 49 0 Fax: (49) 89 45 49 49 49 [email protected] Telephone: (1) 631 360 2222 Fax: (1) 631 360 8222 [email protected] Telephone: (852) 26100 611 Fax: (852) 24250 494 [email protected] Telephone (44) 161 622 4444 Fax: (44) 161 622 4446 [email protected] These offices are supported by agents and distributors in major countries world-wide. This publication is issued to provide outline information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. The Company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service. For the latest product information, log on to www.zetex.com ISSUE 3 - DECEMBER 2003 SEMICONDUCTORS 8