LMH6503 is a wideband, low power, linear variable gain amplifier with features such as wide gain adjustment range and low offset voltage.
The LMH6503 is a DC‑coupled differential‑input voltage‑controlled gain stage followed by a high‑speed current‑feedback op‑amp that can directly drive low‑impedance loads. Gain can be set from a maximum of over 70 dB down to cut‑off, with linear V/V control from –1 V to +1 V relative to the gain‑control pin.
Key specifications include a –3 dB bandwidth of 135 MHz, gain‑control bandwidth of 100 MHz, slew rate of 1800 V/µs, and the ability to source up to 75 mA output current. The device is offered in SOIC‑14 and TSSOP‑14 packages and is intended for applications such as variable attenuators, AGC, voltage‑controlled filters, and multipliers.
| -3 dB Bandwidth | 135 MHz |
|---|---|
| Gain‑Control Bandwidth | 100 MHz |
| Gain Adjustment Range | 70 dB |
| Slew Rate | 1800 V/µs |
| Supply Current (no load) | 37 mA |
| Maximum Output Current | 75 mA |
| Output Voltage (R_L=100 Ω) | 3.2 V |
| Input Voltage Noise | 6.6 nV/√Hz |
| Input Current Noise | 2.4 pA/√Hz |
The gain can be adjusted over a typical range of 70 dB.
The device has a slew rate of 1800 V/µs.
The no‑load supply current is 37 mA.
It is offered in SOIC‑14 and TSSOP‑14 packages.