Overview
The LM6172IN is a dual high-speed, low power, low distortion, voltage feedback amplifier produced by Texas Instruments (formerly National Semiconductor). It is unity-gain stable and offers excellent DC and AC performance. With a 100 MHz unity-gain bandwidth, 3000 V/μs slew rate, and 50 mA of output current per channel, the LM6172IN is designed for high-speed, high-precision, and wide-dynamic-range applications. It operates on ±15V power supplies for systems requiring large voltage swings and is also specified for ±5V power supplies for low-voltage applications such as portable video systems.
Key Specifications
| Parameter | Conditions | Typical Value | Units |
|---|---|---|---|
| Unity-Gain Bandwidth | - | 100 MHz | - |
| Slew Rate | AV = +2, VIN = 13 VPP | 3000 V/μs | - |
| Supply Current per Channel | - | 2.3 mA | - |
| Output Current per Channel | - | 50 mA | - |
| Input Offset Voltage | TJ = 25°C, V+ = +15V, V− = −15V, VCM = 0V, RL = 1 kΩ | 0.4 mV | - |
| Input Bias Current | TJ = 25°C, V+ = +15V, V− = −15V, VCM = 0V, RL = 1 kΩ | 1.2 μA | - |
| Common Mode Rejection Ratio (CMRR) | VCM = ±10V | 70 dB | - |
| Supply Voltage Range | - | 5.5V to 36V | - |
| Junction Temperature Range | - | −40°C to +85°C | - |
Key Features
- Easy-to-use voltage-feedback topology
- High slew rate of 3000 V/μs
- Wide unity-gain bandwidth of 100 MHz
- Low supply current of 2.3 mA per channel
- High output current of 50 mA per channel
- Specified operation at ±15V and ±5V power supplies
- Ultra-low voltage noise
- High-speed voltage feedback amplifier
Applications
- Scanner I-to-V converters
- ADSL/HDSL drivers
- Multimedia broadcast systems
- Video amplifiers
- NTSC, PAL, and SECAM systems
- ADC/DAC buffers
- Pulse amplifiers and peak detectors
- Ultrasound equipment
Q & A
- What is the unity-gain bandwidth of the LM6172IN?
The unity-gain bandwidth of the LM6172IN is 100 MHz.
- What is the slew rate of the LM6172IN?
The slew rate of the LM6172IN is 3000 V/μs.
- How much supply current does each channel of the LM6172IN consume?
Each channel of the LM6172IN consumes 2.3 mA of supply current.
- What is the output current capability of the LM6172IN per channel?
The output current capability of the LM6172IN is 50 mA per channel.
- What are the specified power supply voltages for the LM6172IN?
The LM6172IN is specified for operation at ±15V and ±5V power supplies.
- What are some common applications of the LM6172IN?
The LM6172IN is commonly used in scanner I-to-V converters, ADSL/HDSL drivers, multimedia broadcast systems, video amplifiers, and more.
- How does the LM6172IN handle capacitive loads?
The LM6172IN can handle capacitive loads by using external components such as series resistors and feedback capacitors to reduce overshoot and undershoot.
- What is the junction temperature range for the LM6172IN?
The junction temperature range for the LM6172IN is −40°C to +85°C.
- What is the common mode rejection ratio (CMRR) of the LM6172IN?
The CMRR of the LM6172IN is 70 dB when VCM = ±10V.
- How can the settling time of the LM6172IN be reduced?
The settling time of the LM6172IN can be reduced by placing a series resistor (e.g., 1 kΩ) at the input to decrease the slew rate and by using a feedback capacitor to increase stability.
