TLE207xY

Features:

Direct Upgrades to TL05x, TL07x, and TL08x BiFET Operational Amplifiers
Greater Than 2× Bandwidth (10 MHz) and 3× Slew Rate (45 V/ms) Than TL07x
Ensured Maximum Noise Floor 17 nV//Hz
On-Chip Offset Voltage Trimming for Improved DC Performance
Wider Supply Rails Increase Dynamic Signal Range to ±19 V

Application

input characteristics
The TLE207x, TLE207xA, and TLE207xB are specified with a minimum and a maximum input voltage that if exceeded at either input could cause the device to malfunction. Because of the extremely high input impedance and resulting low bias current requirements, the TLE207x, TLE207xA, and TLE207xB are well suited for low-level signal processing; however, leakage currents on printed-circuit boards and sockets can easily exceed bias current requirements and cause degradation in system performance. It is good practice to include guard rings around inputs (see Figure 70). These guards should be driven from a low-impedance source at the same voltage level as the common-mode input.

TLE2071 input offset voltage nulling
The TLE2071 series offers external null pins that can be used to further reduce the input offset voltage. The circuit of Figure 71 can be connected as shown if the feature is desired. When external nulling is not needed, the null pins may be left unconnected.
macromodel information
Macromodel information provided was derived using PSpiceE PartsE model generation software. The Boyle macromodel (see Note 4) and subcircuit Figure 72 were generated using the TLE207x typical electrical and operating characteristics at TA = 25°C. Using this information, output simulations of the following key parameters can be generated to a tolerance of 20% (in most cases):
Unity-gain frequency
Common-mode rejection ratio
DC output resistance
AC output resistance
Short-circuit output current limit
Maximum positive output voltage swing
Maximum negative output voltage swing
Slew rate
Quiescent power dissipation
Input bias current
Open-loop voltage amplification

Specifications

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC+ (see Note 1) :19 V
Supply voltage, VCC (see Note 1) :19 V
Differential input voltage range, VID (see Note 2):VCC+ to VCC
Input voltage range, VI (any input):VCC+ to VCC
Input current, II (each input):±1 mA
Output current, IO (each output) :±80 mA
Total current into VCC+ :160 mA
Total current out of VCC : 160 mA
Duration of short-circuit current at (or below) 25°C (see Note 3) :unlimited
Continuous total dissipation :See Dissipation Rating Table
Operating free-air temperature range, TA: C suffix :0°C to 70°C
                                                                    I suffix:40°C to 85°C
                                                                   M suffix:55°C to 125°C
Storage temperature range:65°C to 150°C
Case temperature for 60 seconds: FK package :260°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: DW or N package:260°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package :300°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values, except differential voltages, are with respect to the midpoint between VCC+ and VCC.
             2. Differential voltages are at the noninverting input with respect to the inverting input.
             3. The output may be shorted to either supply. Temperatures and/or supply voltages must be limited to ensure that the maximum dissipation rate is not exceeded.


Description

The TLE207xY series of JFET-input operational amplifiers more than double the bandwidth and triple the slew rate of the TL07x and TL08x families of BiFET operational amplifiers. Texas Instruments Excalibur process yields a typical noise floor of 11.6 nV//Hz, 17-nV//Hz ensured maximum, offering immediate improvement in noise-sensitive circuits designed using the TL07x. The TLE207xY also has wider supply voltage rails, increasing the dynamic signal range for BiFET circuits to ±19 V. On-chip zener trimming of offset voltage yields precision grades for greater accuracy in dc-coupled applications. The TLE207x are pin-compatible with lower performance BiFET operational amplifiers for ease in improving performance in existing 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 TLE207xY family of BiFET amplifiers are Texas Instruments highest performance BiFETs, with tighter input offset voltage and ensured maximum noise specifications. Designers requiring less stringent specifications but seeking the improved ac characteristics of the TLE207x should consider the TLE208x operational amplifier family.
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 TLE207xY 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-prefix) are recommended. When moving from BiFET to CMOS amplifiers, particular attention should be paid to slew rate and bandwidth requirements and output loading.