TL05x, TL05xA
ENHANCED-JFET LOW-OFFSET
OPERATIONAL AMPLIFIERS
SLOS178A – FEBRUARY 1997 - REVISED FEBRUARY 2003
Direct Upgrades to TL07x and TL08x BiFET
Operational Amplifiers
On-Chip Offset-Voltage Trimming for
Improved DC Performance and Precision
Grades Are Available (1.5 mV, TL051A)
Faster Slew Rate (20 V/µs Typ) Without
Increased Power Consumption
TL051
D OR P PACKAGE
(TOP VIEW)
TL052
D, P, OR PS PACKAGE
(TOP VIEW)
TL054
D, DB, N, OR NS PACKAGE
(TOP VIEW)
1OUT
1IN–
1IN+
4OUT
4IN–
4IN+
OFFSET N1
IN–
NC
V
OUT
1OUT
1IN–
1IN+
V
1
2
3
4
5
6
7
14
13
12
11
10
9
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
CC+
2OUT
2IN–
2IN+
CC+
IN+
V
V
V
OFFSET N2
V
CC+
CC–
CC–
CC–
2IN+
2IN–
2OUT
3IN+
3IN–
3OUT
8
description/ordering information
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
supplies.
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.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2003, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
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