TLE2142-Q1_15 Datasheet, PDF (1/25 Pages) Texas Instruments – Excalibur™ LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIER

TLE2142-Q1
www.ti.com....................................................................................................................................................................................................... SLOS628 – JULY 2009
Excalibur™ LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIER
FEATURES
1
•2 Qualified for Automotive Applications
• Low Noise
– 10 Hz: 15 nV/√Hz
– 1 kHz: 10.5 nV/√Hz
• 10000-pF Load Capability
• 20-mA Short-Circuit Output Current (Min)
• 27-V/µs Slew Rate (Min)
• High Gain-Bandwidth Product: 5.9 MHz
• Single or Split Supply: 4 V to 44 V
• Fast Settling Time
– 340 ns to 0.1%
– 400 ns to 0.01%
• Large Output Swing:
V_CC– + 0.1 V to V_CC+ – 1 V
D PACKAGE
(TOP VIEW)
1OUT 1
1IN- 2
1IN+ 3
V_CC- 4
8 V_CC+
7 2OUT
6 2IN-
5 2IN+
DESCRIPTION/ORDERING INFORMATION
The TLE2142 device is a high-performance, internally compensated operational amplifier built using the Texas
Instruments complementary bipolar Excalibur™ process. It is a pin-compatible upgrade to standard industry
products.
The design incorporates an input stage that simultaneously achieves low audio-band noise of 10.5 nV/√Hz with a
10-Hz 1/f corner and symmetrical 40-V/µs slew rate typically with loads up to 800 pF. The resulting low distortion
and high power bandwidth are important in high-fidelity audio applications. A fast settling time of 340 ns to 0.1%
of a 10-V step with a 2-kΩ/100-pF load is useful in fast actuator/positioning drivers. Under similar test conditions,
settling time to 0.01% is 400 ns.
The device is stable with capacitive loads up to 10 nF, although the 6-MHz bandwidth decreases to 1.8 MHz at
this high loading level. As such, the TLE2142 is useful for low-droop sample-and-holds and direct buffering of
long cables, including 4-mA to 20-mA current loops.
The special design also exhibits an improved insensitivity to inherent integrated circuit component mismatches as
is evidenced by a 500-µV maximum offset voltage and 1.7-µV/°C typical drift. Minimum common-mode rejection
ratio and supply-voltage rejection ratio are 85 dB and 90 dB, respectively.
Device performance is relatively independent of supply voltage over the ±2-V to ±22-V range. Inputs can operate
between V_CC– – 0.3 V to V_CC+ – 1.8 V without inducing phase reversal, although excessive input current may flow
out of each input exceeding the lower common-mode input range. The all-npn output stage provides a nearly
rail-to-rail output swing of V_CC– + 0.1 V to V_CC+ – 1 V under light current-loading conditions. The device can
sustain shorts to either supply, because output current is internally limited, but care must be taken to ensure that
maximum package power dissipation is not exceeded.
The TLE2142 can also be used as a comparator. Differential inputs of V_CC± can be maintained without damage
to the device. Open-loop propagation delay with TTL supply levels is typically 200 ns. This gives a good
indication as to output stage saturation recovery when the device is driven beyond the limits of recommended
output swing.
The TLE2142 device is available in industry-standard 8-pin small-outline (D) packages. The device is
characterized for operation from –40°C to 125°C.
1
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.
Excalibur is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated