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Courtesy/Thanks to: Texas Instruments

Description: - Direct Upgrades to TL07x and TL08x BiFET Operational Amplifiers
- Faster Slew Rate (20 V/µs Typ) Without
Increased Power Consumption
- On-Chip Offset-Voltage Trimming for
Improved DC Performance and Precision
Grades Are Available (1.5 mV, TL051A)

The TL05x series of JFET-input operational amplifiers offers improved dc and ac characteristics over the TL07x
and TL08x families of BiFET operational amplifiers. On-chip Zener trimming of offset voltage yields precision
grades as low as 1.5 mV (TL051A) for greater accuracy in dc-coupled applications. Texas Instruments improved
BiFET process and optimized designs also yield improved bandwidth and slew rate without increased power
consumption. The TL05x devices are pin-compatible with the TL07x and TL08x and can be used to upgrade
existing circuits or for optimal performance in new designs.
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 TL05x family was designed to offer higher precision and better ac response than the TL08x, with the low
noise floor of the TL07x. Designers requiring significantly faster ac response or ensured lower noise should
consider the Excalibur TLE208x and TLE207x families of BiFET operational amplifiers.
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
The TL05x 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-prefix) are recommended. When moving
from BiFET to CMOS amplifiers, particular attention should be paid to the slew rate and bandwidth
requirements, and also the output loading.


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   Datasheet for the TL05x, TL051, TL052, TL054
Used in
Function Generator using XR2206
   Function Generator
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