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Intersil
Intersil
Description : Wideband Variable-Gain Amplifier with Gain of 10

The EL4452 is a complete Variable Gain circuit. It offers wide bandwidth and excellent linearity, while including a powerful output voltage Amplifier, drawing modest current. The Higher Gain and lower input noise makes the EL4452 ideal for use in AGC systems.

Features
• Complete Variable-Gain Amplifier complete with output Amplifier
• Compensated for Gain ≥ 10
• 50MHz signal bandwidth
• 50MHz Gain-control bandwidth
• Low 29nV/√Hz input noise
• Operates on ±5V to ±15V supplies
• All inputs are differential
• > 70dB attenuation @ 5MHz

Applications
• AGC Variable-Gain Amplifier
• IF Amplifier
• Transducer Amplifier

Elantec
Elantec -> Intersil
Description : Wideband Variable-Gain Amplifier with Gain of 10

General Description
The EL4452 is a complete Variable-Gain circuit. It offers wide bandwidth and excellent linearity, while including a powerful output voltage Amplifier, drawing modest current. The Higher Gain and lower input noise makes the EL4452 ideal for use in AGC systems.

Features
• Complete Variable-Gain Amplifier complete with output Amplifier
• Compensated for Gain ≥10
• 50 MHz signal bandwidth
• 50 MHz Gain-control bandwidth
• Low 29 nV/√Hz input noise
• Operates on ±5V to ±15V supplies
• All inputs are differential
• > 70 dB attenuation @ 5 MHz

Applications
• AGC Variable-Gain Amplifier
• IF Amplifier
• Transducer Amplifier

Intersil
Intersil
Description : Wideband Variable-Gain Amplifier, Gain of 2

The EL4451 is a complete Variable Gain circuit. It offers wide bandwidth and excellent linearity while including a powerful output voltage Amplifier, drawing modest supply current.
The EL4451 operates on ±5V to ±15V supplies and has an analog input range of ±2V, making it ideal for video signal processing. AC characteristics do not change appreciably over the ±5V to ±15V supply range.

Features
• Complete Variable-Gain Amplifier with output Amplifier, requires no extra components
• Excellent linearity of 0.2%
• 70MHz signal bandwidth
• Operates on ±5V to ±15V supplies
• All inputs are differential
• 400V/µs slew rate
• > 70dB attenuation @ 4MHz

Applications
• Leveling of varying inputs
Variable filters
• Fading
• Text insertion into video

ELANTE-ElectronicC
Elantec -> Intersil
Description : Wideband Variable-Gain Amplifier, Gain of 2

General Description
The EL4451C is a complete Variable Gain circuit. It offers wide bandwidth and excellent linearity while including a powerful output voltage Amplifier, drawing modest supply current.

Features
• Complete Variable-Gain Amplifier with output Amplifier, requires no extra components
• Excellent linearity of 0.2%
• 70 MHz signal bandwidth
• Operates on ±5V to ±15V supplies
• All inputs are differential
• 400V/μs slew rate
• > 70dB attenuation @ 4 MHz

Applications
• Leveling of varying inputs
Variable filters
• Fading
• Text insertion into video

Elantec
Elantec -> Intersil
Description : Wideband Variable-Gain Amplifier, Gain of 2

General Description
The EL4451C is a complete Variable Gain circuit. It offers wide bandwidth and excellent linearity while including a powerful output voltage Amplifier, drawing modest supply current.
The EL4451C operates on ±5V to ±15V supplies and has an analog input range of ±2V, making it ideal for video signal processing. AC characteristics do not change appreciably over the g5V to ±15V supply range.

Features
• Complete Variable-Gain Amplifier with output Amplifier, requires no extra components
• Excellent linearity of 0.2%
• 70 MHz signal bandwidth
• Operates on ±5V to ±15V supplies
• All inputs are differential
• 400V/μs slew rate
• >70dB attenuation @ 4 MHz

Applications
• Leveling of varying inputs
Variable filters
• Fading
• Text insertion into video

 

Part Name(s) : TDA9901TS TDA9901
Philips
Philips Electronics
Description : Wideband differential digital controlled Variable Gain Amplifier

GENERAL DESCRIPTION
The TDA9901 is a Wideband, low noise Amplifier with differential inputs and outputs. The TDA9901 incorporates an AGC function with digital control. The TDA9901 is optimized for fast switching between different Gain settings, preserving small phase and amplitude error.

FEATURES
• 130 MHz, −3 dB small signal bandwidth
• Digitally controlled Gain
• TTL/CMOS compatible digital inputs (3.3 or 5 V)
• TTL single ended or differential clock input with PECL compatibility
• 24 dB Gain control range
• Five steps of 6 dB plus 6 dB fixed Gain
• 30 dB Gain maximum
High impedance differential inputs
• Low impedance differential outputs
High power supply rejection
• 125 nV/√Hz output voltage noise density at 30 dB Gain
• Fast Gain settling
• Dual control modes: transparent or latched.

APPLICATIONS
• Linear AGC systems
• IF Amplifier in IF conversion systems (e.g. base stations or satellite receivers)
• Instrumentation
• Multi-purpose Amplifier
• Driver for differential ADCs (e.g. TDA8768).

Description : Wideband, Low Power, Linear-in-dB, Variable Gain Amplifier

General Description
The LMH6505 is a Wideband DC coupled voltage controlled Gain stage followed by a High speed current feedback operational Amplifier which can directly drive a low impedance load. The Gain Adjustment range is 80 dB for up to 10 MHz which is accomplished by varying the Gain control input voltage, VG.
Maximum Gain is set by external components, and the Gain can be reduced all the way to cutoff. Power consumption is 110 mW with a speed of 150 MHz and a Gain control bandwidth (BW) of 100 MHz. Output referred DC offset voltage is less than 55 mV over the entire Gain control voltage range. Device-to-device Gain matching is within ±0.5 dB at maximum Gain. Furthermore, Gain is tested and guaranteed over a wide range. The output current feedback op amp allows High frequency large signals (Slew Rate = 1500 V/μs) and can also drive a heavy load current (60 mA) guaranteed. Near ideal input characteristics (i.e. low input bias current, low offset, low pin 3 resistance) enable the device to be easily configured as an inverting Amplifier as well.

Features
VS = ±5V, TA = 25°C, RF = 1 kΩ, RG = 100Ω, RL = 100Ω,
AV = AVMAX = 9.4 V/V, Typical values unless specified.
■ −3 dB BW 150 MHz
Gain control BW 100 MHz
Adjustment range (<10 MHz) 80 dB
Gain matching (limit) ±0.50 dB
■ Supply voltage range 7V to 12V
■ Slew rate (inverting) 1500 V/μs
■ Supply current (no load) 11 mA
■ Linear output current ±60 mA
■ Output voltage swing ±2.4V
■ Input noise voltage 4.4 nV/√Hz
■ Input noise current 2.6 pA/√Hz
■ THD (20 MHz, RL = 100Ω, VO = 2 VPP) −45 dBc

Applications
Variable attenuator
■ AGC
■ Voltage controlled filter
■ Video imaging processing

Part Name(s) : TDA9901TS TDA9901
NXP
NXP Semiconductors.
Description : Wideband differential digital controlled Variable Gain Amplifier

General description
The TDA9901 is a Wideband, low-noise Amplifier with differential inputs and outputs. The TDA9901 incorporates an Automatic Gain Control (AGC) function with digital control. The TDA9901 is optimized for fast switching between different Gain settings, preserving small phase and amplitude error.

Features
■ 130 MHz, −3 dB small signal bandwidth
■ Digitally controlled Gain
■ Transistor-Transistor Logic (TTL) and CMOS compatible digital inputs (3.3 V or 5 V)
■ TTL single-ended or differential clock input with Positive Emitter-Coupled Logic (PECL) compatibility
■ 24 dB Gain control range
■ Four steps of 6 dB plus 6 dB fixed Gain
■ 30 dB Gain maximum
High impedance differential inputs
■ Low impedance differential inputs
High power supply rejection
■ 125 nV/√Hz output voltage noise density at 30 dB Gain
■ Fast Gain settling
■ Dual control modes: transparent or latched

Applications
■ Linear AGC systems
■ Wireless infrastructure
■ Fixed network
■ Instrumentation
■ Multipurpose Amplifier
■ Driver for differential ADCs (e.g. ADC1206S040/055/070 and ADC1006055/070)

Part Name(s) : SA5209D SA5209N SA5209
NXP
NXP Semiconductors.
Description : Wideband Variable Gain Amplifier

DESCRIPTION
The SA5209 represents a breakthrough in monolithic Amplifier design featuring several innovations. This unique design has combined the advantages of a High speed bipolar process with the proven Gilbert architecture.
The SA5209 is a linear broadband RF Amplifier whose Gain is controlled by a single DC voltage. The Amplifier runs off a single 5 volt supply and consumes only 40mA. The Amplifier has High impedance (1kΩ) differential inputs. The output is 50Ω differential. Therefore, the 5209 can simultaneously perform AGC, impedance transformation, and the balun functions.
The dynamic range is excellent over a wide range of Gain setting.
Furthermore, the noise performance degrades at a comparatively slow rate as the Gain is reduced. This is an important feature when building linear AGC systems.

FEATURES
Gain to 1.5GHz
• 850MHz bandwidth
High impedance differential input
• 50Ω differential output
• Single 5V power supply
• 0 - 1V Gain control pin
• >60dB Gain control range at 200MHz
• 26dB maximum Gain differential
• Exceptional VCONTROL / VGain linearity
• 7dB noise figure minimum
• Full ESD protection
• Easily cascadable

APPLICATIONS
• Linear AGC systems
• Very linear AM modulator
• RF balun
• Cable TV multi-purpose Amplifier
• Fiber optic AGC
• RADAR
• User programmable fixed Gain block
• Video
• Satellite receivers
• Cellular communications

Philips
Philips Electronics
Description : Wideband Variable Gain Amplifier

DESCRIPTION
The NE5209 represents a breakthrough in monolithic Amplifier design featuring several innovations. This unique design has combined the advantages of a High speed bipolar process with the proven Gilbert architecture.
The NE5209 is a linear broadband RF Amplifier whose Gain is controlled by a single DC voltage. The Amplifier runs off a single 5 volt supply and consumes only 40mA. The Amplifier has High impedance (1kΩ) differential inputs. The output is 50Ω differential. Therefore, the 5209 can simultaneously perform AGC, impedance transformation, and the balun functions.
The dynamic range is excellent over a wide range of Gain setting.
Furthermore, the noise performance degrades at a comparatively slow rate as the Gain is reduced. This is an important feature when building linear AGC systems.

FEATURES
Gain to 1.5GHz
• 850MHz bandwidth
High impedance differential input
• 50Ω differential output
• Single 5V power supply
• 0 - 1V Gain control pin
• >60dB Gain control range at 200MHz
• 26dB maximum Gain differential
• Exceptional VCONTROL / VGain linearity
• 7dB noise figure minimum
• Full ESD protection
• Easily cascadable

APPLICATIONS
• Linear AGC systems
• Very linear AM modulator
• RF balun
• Cable TV multi-purpose Amplifier
• Fiber optic AGC
• RADAR
• User programmable fixed Gain block
• Video
• Satellite receivers
• Cellular communications

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