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OPA2991 ACTIVE Dual, 40-V, 4.5-MHz, low-power operational amplifier Pin-to-pin upgrade with improved performance: lower Vos(0.75mV) and noise(10nV/√Hz), higher slew rate(21V/us) and output current(75mA)

Product details

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 7 Rail-to-rail In to V+ GBW (typ) (MHz) 2 Slew rate (typ) (V/µs) 3.4 Vos (offset voltage at 25°C) (max) (mV) 2 Iq per channel (typ) (mA) 0.312 Vn at 1 kHz (typ) (nV√Hz) 40 Rating Catalog Operating temperature range (°C) -40 to 85 Offset drift (typ) (µV/°C) 6 Input bias current (max) (pA) 60 CMRR (typ) (dB) 90 Iout (typ) (A) 0.045 Architecture FET Input common mode headroom (to negative supply) (typ) (V) 3 Input common mode headroom (to positive supply) (typ) (V) 1 Output swing headroom (to negative supply) (typ) (V) 1.3 Output swing headroom (to positive supply) (typ) (V) -1.3
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 7 Rail-to-rail In to V+ GBW (typ) (MHz) 2 Slew rate (typ) (V/µs) 3.4 Vos (offset voltage at 25°C) (max) (mV) 2 Iq per channel (typ) (mA) 0.312 Vn at 1 kHz (typ) (nV√Hz) 40 Rating Catalog Operating temperature range (°C) -40 to 85 Offset drift (typ) (µV/°C) 6 Input bias current (max) (pA) 60 CMRR (typ) (dB) 90 Iout (typ) (A) 0.045 Architecture FET Input common mode headroom (to negative supply) (typ) (V) 3 Input common mode headroom (to positive supply) (typ) (V) 1 Output swing headroom (to negative supply) (typ) (V) 1.3 Output swing headroom (to positive supply) (typ) (V) -1.3
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6
  • 2× Bandwidth (2 MHz) of the TL06x and TL03x Operational Amplifiers
  • Low Supply Current ... 290 µA/Ch Typ
  • On-chip Offset Voltage Trimming for Improved DC Performance
  • High Output Drive, Specified into 100- Loads
  • Lower Noise Floor Than Earlier Generations of Low-Power BiFETs
  • 2× Bandwidth (2 MHz) of the TL06x and TL03x Operational Amplifiers
  • Low Supply Current ... 290 µA/Ch Typ
  • On-chip Offset Voltage Trimming for Improved DC Performance
  • High Output Drive, Specified into 100- Loads
  • Lower Noise Floor Than Earlier Generations of Low-Power BiFETs

The TLE206x series of low-power JFET-input operational amplifiers doubles the bandwidth of the earlier generation TL06x and TL03x BiFET families without significantly increasing power consumption. Texas Instruments Excalibur process also delivers a lower noise floor than the TL06x and TL03x. On-chip zener trimming of offset voltage yields precision grades for dc-coupled applications. The TL206x devices are pin-compatible with other TI BiFETs; they can be used to double the bandwidth of TL06x and TL03x circuits, or to reduce power consumption of TL05x, TL07x, and TL08x circuits by nearly 90%.

BiFET operational amplifiers offer the inherently-higher input impedance of the JFET-input transistors, without sacrificing the output drive associated with bipolar amplifiers. This makes them better suited for interfacing with high-impedance sensors or very low-level ac signals. They also feature inherently better ac response than bipolar or CMOS devices having comparable power consumption. The TLE206x family features a high-output-drive circuit capable of driving 100- loads at supplies as low as ±5 V. This makes them uniquely suited for driving transformer loads in modems and other applications requiring good ac characteristics, low power, and high output drive.

Because BiFET operational amplifiers are designed for use with dual power supplies, care must be taken to observe common-mode input voltage limits and output swing when operating from a single supply. DC biasing of the input signal is required and loads should be terminated to a virtual ground node at mid-supply. Texas Instruments TLE2426 integrated virtual ground generator is useful when operating BiFET amplifiers from single supplies.

The TLE206x are fully specified at ±15 V and ±5 V. For operation in low-voltage and/or single-supply systems, Texas Instruments LinCMOS families of operational amplifiers (TLC- and TLV-prefixes) are recommended. When moving from BiFET to CMOS amplifiers, particular attention should be paid to slew rate and bandwidth requirements, and output loading. The Texas Instrument TLV2432 and TLV2442 CMOS operational amplifiers are excellent choices to consider.

The TLE206x series of low-power JFET-input operational amplifiers doubles the bandwidth of the earlier generation TL06x and TL03x BiFET families without significantly increasing power consumption. Texas Instruments Excalibur process also delivers a lower noise floor than the TL06x and TL03x. On-chip zener trimming of offset voltage yields precision grades for dc-coupled applications. The TL206x devices are pin-compatible with other TI BiFETs; they can be used to double the bandwidth of TL06x and TL03x circuits, or to reduce power consumption of TL05x, TL07x, and TL08x circuits by nearly 90%.

BiFET operational amplifiers offer the inherently-higher input impedance of the JFET-input transistors, without sacrificing the output drive associated with bipolar amplifiers. This makes them better suited for interfacing with high-impedance sensors or very low-level ac signals. They also feature inherently better ac response than bipolar or CMOS devices having comparable power consumption. The TLE206x family features a high-output-drive circuit capable of driving 100- loads at supplies as low as ±5 V. This makes them uniquely suited for driving transformer loads in modems and other applications requiring good ac characteristics, low power, and high output drive.

Because BiFET operational amplifiers are designed for use with dual power supplies, care must be taken to observe common-mode input voltage limits and output swing when operating from a single supply. DC biasing of the input signal is required and loads should be terminated to a virtual ground node at mid-supply. Texas Instruments TLE2426 integrated virtual ground generator is useful when operating BiFET amplifiers from single supplies.

The TLE206x are fully specified at ±15 V and ±5 V. For operation in low-voltage and/or single-supply systems, Texas Instruments LinCMOS families of operational amplifiers (TLC- and TLV-prefixes) are recommended. When moving from BiFET to CMOS amplifiers, particular attention should be paid to slew rate and bandwidth requirements, and output loading. The Texas Instrument TLV2432 and TLV2442 CMOS operational amplifiers are excellent choices to consider.

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Technical documentation

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Type Title Date
* Data sheet TLE206xx: Excalibur JFET-Input High-Output-Drive uPower Op Amps datasheet (Rev. B) 05 May 2004
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note TLE206x/TLE206xA/TLE206xB EMI Immunity Performance 09 Jun 2013

Design & development

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Simulation tool

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SOIC (D) 8 View options

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