TLE2142中文资料德州仪器数据手册PDF规格书

1FEATURES

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/ms 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:

VCC– + 0.1 V to VCC+ – 1 V

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/ms 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-mV maximum offset voltage and 1.7-mV/°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 VCC– – 0.3 V to VCC+ – 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 VCC– + 0.1 V to VCC+ – 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 VCC± 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.