SL6140 Mitel Networks Corporation, SL6140 Datasheet

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SL6140

Manufacturer Part Number
SL6140
Description
400MHz Wideband AGC Amplifier
Manufacturer
Mitel Networks Corporation
Datasheet

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Features
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Applications
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Description
The SL6140 is an integrated broadband AGC amplifier,
designed on an advanced bipolar process.
amplifier provides over 15dB of linear gain into 50Ω at
400MHz. Gain control is also provided with over 70dB
of dynamic range. The SL6140 offers over 45dB of
voltage gain with an R
400MHz Bandwidth (R
High voltage Gain 45dB (R
70dB Gain Control Range
High Output Level at Low Gain
Surface Mount Plastic Package
Low Cost
RF/IF Amplifier
High Gain Mixers
Video Amplifiers
INPUT
INPUT
AGC
R AGC
L
of 1kΩ.
L
=50Ω)
10n
10n
L
=1kΩ)
6
5
4
Figure 1 Typical Application
The
3
SL6140
2
7
+VCC
The SL6140 (Figure 3) is a high gain amplifier with an
AGC control capable of reducing the gain of the amplifier
by over 70dB. The gain is adjustable by applying a
voltage to the AGC input via an external resistor (R
the value of which adjusts the curve of gain reduction
versus control voltage (see Figure 4). As the output
stage of the amplifier is an open collector the maximum
voltage gain is determined by R
of 1kΩ the single ended voltage gain is 45dB and with a
load resistance of 50Ω the voltage gain is 15dB (20log
V
resistance is the bandwidth: 25MHz for R
compared with 400MHz for R
give either the required bandwidth or voltage gain for the
circuit.
Figure 7 through to 10 show the typical S parameters for
the device. Figures 11 and 12 show the typical variation
in 3rd order intercept performance with AGC.
In any application, the substrate should be connected to
the most negative point in the circuit, usually to the same
point as pin 3.
SL6140/NA/MP
SL6140/NA/MPTC Tape and Reel
DS2159
OUT
1.0 F
400MHz Wideband AGC Amplifier
/V
IN
). Another parameter that depends on the load
Ordering Information
8
1
Industrial temperature range
miniature plastic package
R L
Issue no 5.0
+VCC
R L
L
= 50Ω. R
L
. With load resistance
10n
10n
July 1999
SL6140
L
is chosen to
OUTPUT
OUTPUT
L
= 1kΩ, as
SL6140
AGC
10
),
1

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SL6140 Summary of contents

Page 1

... Wideband AGC Amplifier DS2159 SL6140/NA/MP SL6140/NA/MPTC Tape and Reel The SL6140 (Figure high gain amplifier with an AGC control capable of reducing the gain of the amplifier by over 70dB. The gain is adjustable by applying a voltage to the AGC input via an external resistor (R the value of which adjusts the curve of gain reduction versus control voltage (see Figure 4) ...

Page 2

... Thermal Resistance +18V Chip-to-ambient +5V SL6140 V Chip-to-case CC -55°C to +150°C SL6140 -40°C to +85°C at 200mW +150°C MP8 ) = 10KOHms 22KOHm L AGC Conditions Units No input signal mA No input signal mA mA See Figure 4 & Note 1 dB (VAGC = 0V to 10V 1kΩ ...

Page 3

... AGC 5 I/P 470 2k 4 INPUT 6 66 INPUT 5k 1.1k 470 X 2 180 180 470 5k 1.1k 2.1k Figure 3 Full Circuit Diagram of SL6140 7k 12.1k 1 1.4k 45 2.8k 200 200 5.6k 1.9k 200 SUBSTRATE 7 3 GROUND SL6140 OUTPUT OUTPUT 2.8k 3 ...

Page 4

... SL6140 (dB p- Figure 5 Max Differential O/P Voltage v. Gain Reduction 4 R AGC =5. AGC VOLTAGE Figure 4 Gain Reduction v. AGC Voltage ...

Page 5

... 0 =1kΩ =50Ω 10 FREQUENCY (MHz) Figure 6 Voltage Gain v. Frequency Ω Figure 7 Input Impedance 50 100 System SL6140 1000 5 ...

Page 6

... SL6140 Figure 9 Reverse Transmission Coefficient S 6 Figure 8 Output Impedance 50 Ω System SL6140 12 ...

Page 7

... Figure 10 Forward Transmission Coefficient S Figure 11 3rd Order Intercept Point Against Gain Reduction At 250.0MHz and 254.0MHz SL6140 SL6140 12 7 ...

Page 8

... SL6140 Figure 12 3rd Order Intercept Point Against Gain Reduction At 100.0MHz and 104.0MHz VARIABLE CAPS 3-25pF L1 7 TURNS # 18 SWG 8mm DIA 16mm LONG L2 6 TURNS # 16 SWG 14mm DIA 19mm LONG 8 1nF 1nF Figure 13 50MHz Noise Figure Test Circuit +12V ...

Page 9

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Page 10

North America Tel: +1 (770) 486 0194 Fax: +1 (770) 631 8213 Information relating to products and services furnished herein by Mitel Corporation or its subsidiaries (collectively “Mitel”) is believed to be reliable. However, Mitel assumes no liability for errors ...

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