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TLC2142IP Scheda tecnica(PDF) 2 Page - Texas Instruments

Il numero della parte TLC2142IP
Spiegazioni elettronici  EXCALIBUR LOW-NOISE HIGH-SPEED PRECISION DUAL OPERATIONAL AMPLIFIERS
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
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TLC2142IP Scheda tecnica(HTML) 2 Page - Texas Instruments

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TLE2142, TLE2142A, TLE2142Y
EXCALIBUR LOW-NOISE HIGH-SPEED
PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS064B – DECEMBER 1990 – REVISED AUGUST 1994
5–2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
The design incorporates a patent-pending input stage that simultaneously achieves low audio-band noise of
10.5 nV/
√Hz, with a 6-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-k
Ω/100-pF load is useful in fast actuator/positioning drivers. Under
similar test conditions, settling time to 0.01% is 400 ns.
The devices are 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 and TLE2142A are 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 inherit integrated circuit component mismatches
as is evidenced by a 750-
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 VCC– –0.3 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 to VCC+ –1 V under light current-loading conditions. The device
can sustain shorts to either supply since output current is internally limited, but care must be taken to ensure
that maximum package power dissipation is not exceeded.
Both versions can also be used as comparators. 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.
Both the TLE2142 and TLE2142A are available in a wide variety of packages, including both the
industry-standard 8-pin small-outline version and chip form for high-density system applications. The C-suffix
devices are characterized for operation from 0
°C to 70°C, I-suffix devices from –40°C to 105°C, and M-suffix
devices over the full military temperature range of – 55
°C to 125°C.
1
2
3
4
8
7
6
5
1OUT
1IN –
1IN +
VCC –
VCC+
2OUT
2IN –
2IN +
D, JG, OR P PACKAGE
(TOP VIEW)
32
1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
NC
2OUT
NC
2IN –
NC
NC
1IN –
NC
1IN +
NC
FK PACKAGE
(TOP VIEW)
NC – No internal connection


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