ZXFBF08 8 Channel Buffer Device APPLICATIONS DEVICE DESCRIPTION The ZXFBF08 is a low cost, high slew rate, octal buffer amplifier. Built using the Zetex CA700 technology, this buffer has a small signal bandwidth of greater than 100MHz and a 1 volt pk-pk bandwidth of greater than 20 MHz. Each channel draws only 1.9mA. The device operates from a ±5 volt supply, which makes it ideal in a majority of applications. This space saving buffer may be used in a wide variety of applications such as, video switching matrix, multi-channel instrumentation equipment, and A/D input buffer, etc. FEATURES AND BENEFITS • Video Switching Matrix input buffer • Instrumentation • Multi-channel A/D input buffer • Multi-isolation buffer PART NUMBER PACKAGE PART MARK ZXFBF08W20 SOIC20W ZXFBF08 ORDERING INFORMATION • 8 Buffers per package • 100MHz bandwidth • Low cost • Low supply current (1.9mA per buffer) • No thermal runaway • 20 pin SOIC package PART NUMBER CONTAINER INCREMENT ZXFBF08W20TC Reel 13” 1000 RELATED PRODUCTS ZXFBF04 4 Channel Buffer ZXFBF05 4 Channel Buffer with high capacitance drive ZXFBF25 4 Channel Buffer with output enable CONNECTION DIAGRAM OUT1 1 20 OUT8 IN1 2 19 IN8 V- 3 18 V+ OUT2 4 17 OUT7 IN2 5 16 IN7 OUT3 6 15 OUT6 IN3 7 14 IN6 V- 8 13 V+ OUT4 9 12 OUT5 IN4 10 11 IN5 ISSUE 2 - OCTOBER 2000 1 ZXFBF08 ABSOLUTE MAXIMUM RATINGS Voltage on any pin Operating temperature range Storage Temperature 20V (relative to V-) 0 to 70°C (de-rated for -40 to 85°C) -55 to 125°C ELECTRICAL CHARACTERISTICS Test Conditions: Temperature =25°C, V+ = 5.00, V- = -5.00V, RL = 1kΩ, CL = 10pF Parameter Conditions Min. -15 Typical Max. Units - 15 mV Offset Voltage V in = 0V Offset Voltage Drift V in = 0V 20 Supply Current All inputs = 0V 15 25 mA Input Bias Current V in = 0V 0.5 2.0 µA Output Voltage R L = 1kΩ R L = 10kΩ DC Gain V in = ± 0.5V, R L = 1kΩ V offset = 0.0V 0.95 0.98 1.00 V/V DC Gain V in = ±0.5V, R L = 1kΩ V offset = 0.25V 0.95 0.99 1.00 V/V Sink Current V in = 0V, V out =0.5V 1.0 2.2 5.0 mA Source Current V in = 0V, V out =-0.5V 6.0 9.0 12.0 mA 10 20 100 MΩ 10 15 0.1 ±1 ±4 Input Resistance Output Resistance Bandwidth 5 20mVp-p, 1.0Vp-p Slew Rate Voltage Noise Differential Gain NTSC Differential Phase NTSC Differential Gain PAL Differential Phase PAL Channel Isolation V/°C 10 – 100 kHz F = 3.58MHz, V in = 0.286Vp-p, DC ∆V in = 0 to 0.714V F = 4.43MHz, V in = 0.286Vp-p, DC ∆V in = 0 to 0.714V V in = 370mVp-p, RL = 1kΩ F = 4 MHz V Ω 100 20 MHz 40 V/µs 15 nV/√Hz 0.1 % 0.15 Degrees 0.1 % 0.15 Degrees -60 dB NOTES Vin=370mV pk-pk, F = 4 MHz Test circuit for measuring channel isolation. Channel Isolation = 20 x LOG10 (Vout / Vin) dB Vout RL = 1kΩ ISSUE 2 - OCTOBER 2000 2 ZXFBF08 PIN DESCRIPTION OUT1 1 20 OUT8 IN1 2 19 IN8 V- 3 18 V+ OUT2 4 17 OUT7 IN2 5 16 IN7 OUT3 6 15 OUT6 IN3 7 14 IN6 V- 8 13 V+ OUT4 9 12 OUT5 IN4 10 11 IN5 OUT 1,2,3,4,5,6,7,8 IN 1,2,3,4,5,6,7,8 V+ V- Buffer outputs. Buffer Inputs. Positive supply pin, +5 volts. Negative supply pin, -5 APPLICATION CIRCUIT DC Coupled Configuration V+ 100nF _ Vout Vin + 1/8 ZXFBF08 100nF V- ISSUE 2 - OCTOBER 2000 3 RL ZXFBF08 APPLICATION CIRCUIT V+ 100nF AC Coupled Configuration _ C Vout Vin + 1/8 ZXFBF08 RL RS 100nF VNOTE. Rs: Source Resistor, provides DC bias for buffer input. Rs 艋 10kΩ Both 100nF decoupling capacitors should be situated close to device supply pins. TYPICAL CHARACTERISTICS -40 V+ = 5V RL = 1k Ω 0.990 -50 Attenation (dB) DC Gain (Vin/Vout) 0.991 0.989 0.988 0.987 -60 -70 -80 -90 0.986 -50 -25 0 25 50 75 100 Temperature (°C) -100 0.1 1 10 Frequency (MHz) DC Differential Gain v Temperature Channel Isolation v Frequency ISSUE 2 - OCTOBER 2000 4 ZXFBF08 TYPICAL CHARACTERISTICS Test Conditions:V+=5V, Temperature=25°C. ISSUE 2 - OCTOBER 2000 5 ZXFBF08 PACKAGING INFORMATION SOIC 20 Lead DIM A B Millimetres Inches Min Max Min Max A 12.65 12.85 0.498 0.506 B 1.27 – 0.05 – C 0.66 – 0.026 – D 0.36 0.46 0.014 0.018 E 7.40 7.60 0.291 0.299 F 2.44 2.64 0.096 0.104 G 0.10 0.30 0.004 0.012 H 0° 7° 0° 7° I 0.23 0.28 0.009 0.011 J 10.11 10.51 0.398 0.414 K 0° 8° 0° 8° L 0.51 1.01 0.02 0.04 R 0.63 0.89 0.025 0.035 a 7°BSC C E R a D 0.51±0.02 @450.51 PIN No.1 G F K L 7°BSC Zetex plc. Fields New Road, Chadderton, Oldham, OL9-8NP, United Kingdom. Telephone: (44)161 622 4422 (Sales), (44)161 622 4444 (General Enquiries) Fax: (44)161 622 4420 Zetex GmbH Streitfeldstraße 19 D-81673 München Germany Telefon: (49) 89 45 49 49 0 Fax: (49) 89 45 49 49 49 Zetex Inc. 47 Mall Drive, Unit 4 Commack NY 11725 USA Telephone: (631) 543-7100 Fax: (631) 864-7630 Zetex (Asia) Ltd. 3701-04 Metroplaza, Tower 1 Hing Fong Road, Kwai Fong, Hong Kong Telephone:(852) 26100 611 Fax: (852) 24250 494 These are supported by agents and distributors in major countries world-wide © Zetex plc 2000 Internet:http://www.zetex.com 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. 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