TL461 Datasheet, PDF (3/4 Pages) Texas Instruments – PRECISION SERIES REFERENCE

TL461
PRECISION SERIES REFERENCE
SLVS263 – NOVEMBER 1999
electrical characteristics at 25°C free-air temperature, V_in = V_out + 2.5 V, I_out = 0
(unless otherwise noted)
PARAMETER
VO
Output voltage
TL461-33
TL461-05
TEST CONDITIONS
TA
25°C
25°C
MIN
3.284
4.975
TYP MAX
3.3 3.317
5 5.025
UNIT
V
α_Vout
Output voltage temperature
coefficient (see Note 2)
Tmin < Tj < Tmax –40°C to 85°C
10
30 ppm/°C
nVO
Line regulation
7.5 V < Vin < 20 V
Iout = 100 µA
25°C
–40°C to 85°C
25°C
–40°C to 85°C
3.1 6.3
mV
8.1
2.2
3
4
nVO
Load regulation sourcing
Iout = 10 mA
25°C
–40°C to 85°C
14
27
mV
35
Iout = 20 mA
25°C
–40°C to 85°C
22
40
50
Dropout voltage
IO
Output current
Reverse leakage
Quiescent current
Iout = 10 mA
Vout = GND
Vin = –15 V
–40°C to 85°C
25°C
–40°C to 85°C
25°C
–40°C to 85°C
1.4 V
40
mA
0.5
10 µA
125 180
µA
225
Standby current
–40°C to 85°C
50 µA
ENABLE bias current
ENABLE = 0.8 V
7
–40°C to 85°C
µA
ENABLE = 2 V
0.05
Output noise voltage (see Note 3)
Long-term stability of output voltage (see Note 4)
0.1 Hz < f < 10 Hz
10 Hz < f < 1 kHz
25°C
25°C
20
µVpp
20
µVrms
70
ppm/√k
Hz
NOTES: 2. Temperature coefficient is measured by dividing the change in output voltage by the specified temperature range.
Ť Ť ǒ Ǔ + ǒ Ǔ a ppm
Vout _°C
DVout
Vout at 25°C
DT_A
10⁶
Maximum Vout
Minimum Vout
∆Vout
∆TA
Where:
∆_aTVAouist
the recommended operating free-air temperature range of the device.
can be positive or negative, depending on whether minimum Vout or
maximum
Vout,
respectively,
occurs at the lower temperature.
3. Peak-to-peak noise is measured with a single high-pass filter at 0.1 Hz and two-pole low-pass filter at 10 Hz. The unit is enclosed
in a still-air environment to eliminate thermocouple effects on the leads. The test time is 10 seconds. RMS noise is measured with
a single high-pass filter at 10 Hz and a two-pole low-pass filter at 1 kHz. The resulting output is full-wave rectified, then integrated
for a fixed period, making the final reading an average rather than RMS. A correction factor of 1.1 converts from average to RMS.
A second correction of 0.88 corrects for the nonideal bandpass of the filters.
4. Long-term stability typically has a logarithmic characteristic. Therefore, stability changes after 1000 hours tend to be much smaller
than before that time. Total drift in the second thousand hours is normally less than one third of that of the first thousand hours, with
a continuing trend toward reduced drift with time. Significant improvement in long-term drift can be realized by preconditioning the
device with a 100-hour to 200-hour, 125°C burn-in. Long-term stability also is affected by differential stresses between the device
and the board material that are created during board assembly.
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