Enhanced JFET Low-Power Precision Operational Amplifier - TL031

TL031 (ACTIVE)

Enhanced JFET Low-Power Precision Operational Amplifier

Description

The TL03x series of JFET-input operational amplifiers offer improved dc and ac characteristics over the TL06x family of low-power BiFET operational amplifiers. On-chip zener trimming of offset voltage yields precision grades as low as 1.5 mV (TL031A) for greater accuracy in dc-coupled applications. The Texas Instruments improved BiFET process and optimized designs also yield improved bandwidths and slew rates without increased power consumption. The TL03x devices are pin-compatible with the TL06x 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 higher input impedance makes the TL3x amplifiers better suited for interfacing with high-impedance sensors or very low-level ac signals. These devices also feature inherently better ac response than bipolar or CMOS devices having comparable power consumption.

The TL03x family has been optimized for micropower operation, while improving on the performance of the TL06x series. Designers requiring significantly faster ac response should consider the Excalibur™ TLE206x family of low-power 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 midsupply. The TI TLE2426 integrated virtual-ground generator is useful when operating BiFET amplifiers from single supplies.

The TL03x devices are fully specified at ±15 V and ±5 V. For operation in low-voltage and/or single-supply systems, the TI LinCMOS families of operational amplifiers (TLC prefix) are recommended. When moving from BiFET to CMOS amplifiers, particular attention should be paid to slew rate, bandwidth requirements, and output loading.

The C-suffix devices are characterized for operation from 0°C to 70°C. The I-suffix devices are characterized for operation from –40°C to 85°C. The M-suffix devices are characterized for operation over the full military temperature range of –55°C to 125°C.

Features

  • Direct Upgrades for the TL06x Low-Power BiFETs
  • Low Power Consumption . . . 6.5 mW/Channel Typ
  • On-Chip Offset-Voltage Trimming for Improved DC Performance (1.5 mV, TL031A)
  • Higher Slew Rate and Bandwidth Without Increased Power Consumption
  • Available in TSSOP for Small Form-Factor Designs

Excalibur is a trademark of Texas Instruments.

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Parametrics Compare all products in General Purpose Amplifier

 
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
GBW (Typ) (MHz)
Slew Rate (Typ) (V/us)
CMRR (Min) (dB)
Vn at 1kHz (Typ) (nV/rtHz)
Vos (Offset Voltage @ 25C) (Max) (mV)
IIB (Max) (pA)
Iq per channel (Max) (mA)
Offset Drift (Typ) (uV/C)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TL031 TL032 TL032A TL034 TL034A
1     2     2     4     4    
10     10     10     10     10    
30     30     30     30     30    
1.1     1.1     1.1     1.1     1.1    
5.1     5.1     5.1     5.1     5.1    
75     75     75     75     75    
41     41     41     43     43    
1.5     1.5     0.8     4     1.5    
200     200     200     200     200    
0.28     0.28     0.28     0.28     0.28    
5.9     10.8     10.8     12     12    
Catalog     Military     Catalog     Military     Catalog    
0 to 70
-40 to 85    
-40 to 85
0 to 70    
-40 to 85
0 to 70    
-40 to 85
0 to 70    
-40 to 85
0 to 70    
8PDIP
8SOIC    
8PDIP
8SO
8SOIC    
8PDIP
8SOIC    
14PDIP
14SO
14SOIC
14TSSOP    
14PDIP
14SOIC    
0.25 | 1ku       1.35 | 1ku       2.97 | 1ku    

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TL051   Enhanced JFET Precision Operational Amplifier   OPERATIONAL AMPLIFIER - GENERAL PURPOSE AMPLIFIER    
TL061   Low-Power JFET-Input General-Purpose Operational Amplifier   OPERATIONAL AMPLIFIER - GENERAL PURPOSE AMPLIFIER    
TL071   Low-Noise JFET-Input General-Purpose Operational Amplifier   OPERATIONAL AMPLIFIER - GENERAL PURPOSE AMPLIFIER    
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