LMH6503MA/NOPB National Semiconductor, LMH6503MA/NOPB Datasheet - Page 18

• Manufacturer Part Number: LMH6503MA/NOPB
• Description: IC AMP VARIABLE GAIN 14-SOIC
• Manufacturer: National Semiconductor
• Series: LMH®r

Specifications of LMH6503MA/NOPB

• Amplifier Type: Variable Gain
• Number Of Circuits: 1
• Slew Rate: 1800 V/µs
• -3db Bandwidth: 135MHz
• Current - Input Bias: 11µA
• Current - Supply: 37mA
• Current - Output / Channel: 90mA
• Voltage - Supply, Single/dual (±): 5 V ~ 12 V, ±2.5 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• For Use With: CLC730033 - EVAL BOARD AMP FOR 14-SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Gain Bandwidth Product: -
• Voltage - Input Offset: -
• Other names: *LMH6503MA; LMH6503MA

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Application Circuits
FOUR-QUADRANT MULTIPLIER
Applications requiring multiplication, squaring or other non-
linear functions can be implemented with four-quadrant mul-
tipliers. The LMH6503 implements a four-quadrant multiplier
as illustrated in Figure 11:
FREQUENCY SHAPING
Frequency shaping and bandwidth extension of the
LMH6503 can be accomplished using parallel networks con-
nected across the R
Figure 12 schematic will effectively extend the LMH6503’s
bandwidth.
FIGURE 11. Four Quadrant Multiplier
FIGURE 12. Frequency Shaping
G
ports. The network shown in the
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2
The LMH6503 Variable-Gain Amplifier placed into a feed-
back loop provides signal processing function such as in a
2nd order tunable bandpass filter. The center frequency of
the 2nd order bandpass shown in Figure 13 is adjusted
through the use of the LMH6503’s gain control voltage, V
The integrators implemented with two sections of a
LMH6682, provide the coefficients for the transfer function.
nd
ORDER TUNABLE BANDPASS FILTER
FIGURE 13. Tunable Bandpass Filter
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G
.