LMH6502 - Wideband, Low Power, Linear-in-dB Variable Gain Amplifier
Datasheet Packaging Samples & Pricing Reliability Design Tools Models Knowledge Base

Features

VS = ±5V, TA = 25°C, RF = 1k, RG = 174, RL = 100, AV = AV(MAX) = 10 Typical values unless specified.

-3dB BW

130MHz

Gain control BW

100MHz

Adjustment range (typical over temp)

70dB

Gain matching (limit)

±0.6dB

Slew rate

1800V/µs

Supply current (no load)

27mA

Linear output current

±75mA

Output voltage (RL = 100)

±3.2V

Input voltage noise

7.7nV/

Input current noise

2.4pA/

THD (20MHz, RL = 100, VO = 2VPP)

-53dBc

Replacement for CLC520

  

General Description

The LMH™6502 is a wideband DC coupled differential input voltage controlled gain stage followed by a high-speed current feedback Op Amp which can directly drive a low impedance load. More...


Applications

•Variable attenuator
•AGC
•Voltage controller filter
•Video imaging processing
  Typical Application
click for larger image


ParametersValues
Gain Adjust Range 70 dB
Analog Control BW 100 MHz
Signal Channel BW 130 MHz
Supply Min 5 Volt
Supply Max 12 Volt
Gain Control Interface Voltage
Slew Rate 1800 Volts/usec
Supply Current 27 mA
PowerWise Rating 2 208 uA/MHz
Output Current 90 mA
Offset Voltage max, 25C 300 mV
Max Input Bias Current 20000 nA
Voltage Noise 7.7 nV/root(Hz)
HD 2nd -55 dB
HD 3rd -57 dB
Diff Gain 0.34 dB
Diff Phase 0.1 %
Special Features Differential Input
Function VGA
Temperature Min -40 deg C
Temperature Max 85 deg C


Typical Performance

click for larger image


 
Additional Resources
Design Tools


Connection Diagram

*click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LMH6502 Wideband, Low Power, Linear-in-dB Variable Gain Amplifier 941
Kbytes		 25-Jun-04 Download
LMH6502 Wideband, Low Power, Linear-in-dB Variable Gain Amplifier (Japanese)
 549 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LMH6502MASOIC NARROW14NOPB
STD		1
1		260
235		RoHS Download Full productionLMH6502.MOD
Samples with Eval Board
Buy Now 		1K+$3.48rail
of
55		NSUZXYTTE#
LMH6502MA
6 weeks500
LMH6502MAXSOIC NARROW14NOPB1260RoHS Download Full productionLMH6502.MOD
 
Buy Now 		1K+$3.48reel
of
2500		NSUZXYTTE#
LMH6502MA
8 weeks3000
LMH6502MTTSSOP14NOPB1260RoHS Download Full productionLMH6502.MOD
 
Buy Now 		1K+$3.48rail
of
94		NSUZXYTT
LMH65
02MT
6 weeks500
LMH6502MTXTSSOP14NOPB1260RoHS Download Full productionLMH6502.MOD
 
Buy Now 		1K+$3.48reel
of
2500		NSUZXYTT
LMH65
02MT
8 weeksN/A

General Description

The LMH™6502 is a wideband DC coupled differential input voltage controlled gain stage followed by a high-speed current feedback Op Amp which can directly drive a low impedance load. Gain adjustment range is more than 70dB for up to 10MHz.

Maximum gain is set by external components and the gain can be reduced all the way to cut-off. Power consumption is 300mW with a speed of 130MHz. Output referred DC offset voltage is less than 350mV over the entire gain control voltage range. Device-to-device Gain matching is within ±0.6dB at maximum gain. Furthermore, gain at any VG is tested and the tolerance is guaranteed. The output current feedback Op Amp allows high frequency large signals (Slew Rate = 1800V/µs) and can also drive heavy load current (75mA). Differential inputs allow common mode rejection in low level amplification or in applications where signals are carried over relatively long wires. For single ended operation, the unused input can easily be tied to ground (or to a virtual half-supply in single supply application). Inverting or non-inverting gains could be obtained by choosing one input polarity or the other.

To provide ease of use when working with a single supply, VG range is set to be from 0V to +2V relative to pin 11 potential (ground pin). In single supply operation, this ground pin is tied to a "virtual" half supply.

LMH6502 gain control is linear in dB for a large portion of the total gain control range. This makes the device suitable for AGC circuits among other applications. For linear gain control applications, see the LMH6503 datasheet. The LMH6502 is available in the SOIC-14 and TSSOP-14 package.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LMH6502MAVIP 100128010011550004327734403
LMH6502MAXVIP 100128010011550004327734403
LMH6502MTVIP 100128010011550004327734403
LMH6502MTXVIP 100128010011550004327734403

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools

TitleSize in Kbytes Date Click link below to Download    
CLC730033 SOIC-14 Evaluation Board - Included with LMH6502MA Sample Order 325 Kbytes 2-Feb-04 View Online Download  

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Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1808: Application Note 1808 LMH730033 Evaluation Board 683
Kbytes		 3-Mar-08 Download

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[Information as of 7-Nov-2009]