Overview
The LMH6639MFX/NOPB is a high-speed, voltage feedback operational amplifier produced by Texas Instruments. This device is notable for its rail-to-rail output drive capability and low current consumption, making it suitable for a variety of applications requiring high bandwidth and low power. The LMH6639 employs TI’s patented VIP10 process, ensuring a bandwidth of 190MHz at a supply current of only 3.6mA. It features an input common mode voltage range that extends to 0.2V below the negative supply rail and to within 1V of the positive supply rail, making it a versatile single-supply op-amp.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| −3dB Bandwidth (AV = +1) | 130 | 190 | MHz | ||
| Supply Current (No Load) | VS = 5V | 3.6 | mA | ||
| Supply Current (Off Mode) | 400 | μA | |||
| Output Resistance (Closed Loop, 1MHz) | RF = 10kΩ, AV = −1 | 0.186 | Ω | ||
| Slew Rate | 172 | V/μs | |||
| Settling Time | 33 | nsec | |||
| Input Common Mode Voltage | −0.2 | 4 | V | ||
| Output Voltage Swing | 40mV from Rails | ||||
| Linear Output Current | 110 | mA | |||
| Total Harmonic Distortion | f = 5MHz, VO = 2VPP, AV = +2 | −60 | dBc | ||
| Differential Gain | NTSC, AV = +2 | 0.12 | % | ||
| Differential Phase | NTSC, AV = +2 | 0.045 | ° |
Key Features
- Rail-to-rail output drive capability
- High bandwidth of 190MHz at a supply current of 3.6mA
- Input common mode voltage range extending to 0.2V below the negative supply rail and to within 1V of the positive supply rail
- Low total harmonic distortion of −60dBc and excellent differential gain and phase specifications
- No output phase reversal with common mode voltage range exceeded
- Excellent overdrive recovery and off isolation of −70dB at 1MHz
- Protection for input transistors using anti-parallel diodes and a series resistor
- Shutdown feature with low current consumption in off mode
Applications
- Active Filters
- CD/DVD ROM
- ADC Buffer Amplifier
- Portable Video
- Current Sense Buffer
- Multiplexing applications due to fast on and off times and excellent overdrive recovery
Q & A
- What is the bandwidth of the LMH6639MFX/NOPB?
The LMH6639MFX/NOPB has a bandwidth of 190MHz at a gain of +1. - What is the typical supply current of the LMH6639MFX/NOPB?
The typical supply current is 3.6mA. - What is the slew rate of the LMH6639MFX/NOPB?
The slew rate is 172V/μs. - Does the LMH6639MFX/NOPB have a shutdown feature?
Yes, it has a shutdown feature with a low current consumption of 400μA in off mode. - What is the total harmonic distortion of the LMH6639MFX/NOPB?
The total harmonic distortion is −60dBc at f = 5MHz, VO = 2VPP, and AV = +2. - What are the differential gain and phase specifications?
The differential gain is 0.12% and the differential phase is 0.045° for NTSC, AV = +2. - What kind of protection does the LMH6639MFX/NOPB have for its input transistors?
The input transistors are protected by anti-parallel diodes and a series resistor connected across the inputs. - What are some common applications of the LMH6639MFX/NOPB?
Common applications include active filters, CD/DVD ROM, ADC buffer amplifiers, portable video, and current sense buffers. - What is the package type of the LMH6639MFX/NOPB?
The package type is SOT-23-6. - Is the LMH6639MFX/NOPB RoHS compliant?
Yes, the LMH6639MFX/NOPB is RoHS compliant.
