Document
ZXFBF08
8 Channel Buffer Device
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 • • • • • • 8 Buffers per package 100MHz bandwidth Low cost Low supply current (1.9mA per buffer) No thermal runaway 20 pin SOIC package APPLICATIONS • • • • Video Switching Matrix input buffer Instrumentation Multi-channel A/D input buffer Multi-isolation buffer
PART NUMBER ZXFBF08W20
PACKAGE SOIC20W
PART MARK ZXFBF08
ORDERING INFORMATION
PART NUMBER ZXFBF08W20TC CONTAINER Reel 13” INCREMENT 1000
RELATED PRODUCTS ZXFBF04 4 Channel Buffer ZXFBF05 4 Channel Buffer with high capacitance drive
CONNECTION DIAGRAM
ZXFBF25 4 Channel Buffer with output enable
OUT1
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
OUT8
IN1 VOUT2 IN2 OUT3 IN3 VOUT4
IN4
IN8 V+ OUT7 IN7 OUT6 IN6 V+ OUT5
IN5
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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 Offset Voltage Offset Voltage Drift Supply Current Input Bias Current Output Voltage DC Gain DC Gain Sink Current Source Current Input Resistance Output Resistance Bandwidth Slew Rate Voltage Noise Differential Gain NTSC Differential Phase NTSC Differential Gain PAL Differential Phase PAL Channel Isolation 10 – 100 kHz F = 3.58MHz, V in = 0.286Vp-p, DC ∆ V in = 0 to 0.714V 20mVp-p, 1.0Vp-p Conditions V in = 0V V in = 0V All inputs = 0V V in = 0V R L = 1k Ω R L = 10k Ω V in = ± 0.5V, R L = 1k Ω V offset = 0.0V V in = ±0.5V, R L = 1k Ω V offset = 0.25V V in = 0V, V out =0.5V V in = 0V, V out =-0.5V 0.95 0.95 1.0 6.0 10 5 0.1 Min. -15 Typical 20 15 0.5 ±1 ±4 0.98 0.99 2.2 9.0 20 10 100 20 40 15 0.1 0.1 5 0.1 F = 4.43MHz, V in = 0.286Vp-p, DC ∆ V in = 0 to 0.714V V in = 370mVp-p, RL = 1k Ω F = 4 MHz 0.15 -60 1.00 1.00 5.0 12.0 100 15 25 2.0 Max. 15 Units mV V/°C mA µA V V/V V/V mA mA MΩ Ω MHz V/ µs nV/ √ Hz % Degrees % Degrees dB
NOTES Test circuit for measuring channel isolation.
Channel Isolation = 20 x LOG10 (Vout / Vin) dB
Vin=370mV pk-pk, F = 4 MHz
Vout
RL = 1k Ω
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ZXFBF08
PIN DESCRIPTION
OUT1
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
OUT8
IN1 VOUT2 IN2 OUT3 IN3 VOUT4
IN4
IN8 V+ OUT7 IN7 OUT6 IN6 V+ OUT5
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
RL
V-
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ZXFBF08
APPLICATION CIRCUIT AC Coupled Configuration
V+
100nF
_ C Vin RS
100nF
Vout +
1/8 ZXFBF08
RL
VNOTE.
Rs: Source Resistor, provides DC bias for buffer input. Rs ഛ 10kΩ Both 100nF decoupling capacitors should be situated close to device supply pins.
TYPICAL CHARACTERISTICS
0.991 -40
V+ = 5V RL = 1k Ω
DC Gain (Vin/Vout)
Attenation (dB)
-25 0 25 50 75 100
0.990 0.989 0.988 0.987 0.986 -50
-50 -60 -70 -80 -90 -100 0.1
1
10
Temperature (°C)
Frequency (MHz)
DC Differential Gain v Temperature
Channel Isolation v Frequency
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ZXFBF08
TYPICAL CHARACTERISTICS
Test Conditions:V+=5V, Temperature=25°C. ISSUE 2 - OCTOBER 2000 5
ZXFBF08
PACKAGING INFORMATION
SOIC 20 Lead
DIM
Millimetres Min Max 12.85 – – 0.46 7.60 2.64 0.30 7° 0.28 10.51 8° 1.01 0.89
Inches Min 0.498 0.05 0.026 0.014 0.291 0.096 0.004 0° 0.009 0.398 0° 0.02 0.025 7°BSC Max 0.506 – – 0.018 0.299 0.104 0.012 7° 0.011 0.414 8° 0.04 0.035
A B C
A B
12.65 1.27 0.66 0.36 7.40 2.44 0.10 0° 0.23 10.11 0° 0.51 0.63 7°BSC
R E
C
a D 0.51±0.02 @450.51
D E F
PIN No.1
G
Zetex GmbH Streitfeldstraße 19 D-81673 München Germany Telefon: (49) 89 45 49 49 0 Fax: (49) 89 45 49 49 49
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.
ISSUE 1 - APRIL 2000
F
K L
G H I J K L R a
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 Inc. 47 Mall Driv.