LM6172IN

The LM6172IN Circuit contains two very fast voltage-feedback operational amplifiers with low distortion and low current consumption. The circuit uses complementary bipolar technology (also used in current-feedback amplifiers).
The LM6172 offers a wide range of supply voltages, which can be both symmetric and asymmetric: ±15V (or 0 to 30V) for applications requiring a wide range of output voltage changes, or ±3V (or 0 to 6V) for applications in portable devices, for example.

Selected Properties [for V_CC =±15V and Ta = 25°C]

• Number of amplifiers: 2;
• Common-mode input voltage range: ±13.5V;
• Output voltage swing: ±13.2V;
• Input offset voltage: 0.4mV;
• Temperature drift of offset voltage: 6µV/°C;
• Input bias current: 1.2µA;
• Input offset current: 20nA;
• Current consumption: 2.3mA per amplifier;
• Output current: 90mA;
• Gain-bandwidth product (GBW): 160MHz;
• Bandwidth: 100MHz;
• Output slew rate (SR): 3000V/µs;
• Settling time: 65ns;
• Noise voltage density at input: 12nV/√Hz;
• Supply voltage:
  • Symmetric: ±2.75 to ±18V;
  • Asymmetric: 5.5 to 36V;
• Operating temperature: -40 to 85°C;
• Package type: PDIP08.

Typical Applications: Pulse technology, TV systems, buffer for A/D and D/A converters, peak detector.

Pinout:

Practical Notes from the Manufacturer:

• If the amplifier is used with a capacitive load, there is a risk of the circuit oscillating and causing unwanted output oscillations. It is recommended to increase the phase margin by adding a 50Ω resistor in series with the amplifier output.
• If a very fast pulse is applied to the amplifier input, output overshoot may occur. It is recommended to limit the speed by adding a 1kΩ resistor in series with the amplifier input.
• When designing the PCB, it is recommended to follow high-frequency circuit design rules. Pay attention to proper trace routing, power decoupling, impedance matching, and grounding.