TL461

PRECISION SERIES REFERENCE

SLVS263 – NOVEMBER 1999

3

POST OFFICE BOX 655303

electrical characteristics at 25

(unless otherwise noted)

PARAMETER

TEST CONDITIONS

TA

MIN

TYP

MAX

UNIT

VO

Output voltage

TL461-33

25

°C

3.284

3.3

3.317

V

VO

Output voltage

TL461-05

25

°C

4.975

5

5.025

V

αV

out

Output voltage temperature

coefficient (see Note 2)

Tmin < Tj < Tmax

–40

°C to 85°C

10

30

ppm/

°C

Line regulation

7 5V<Vi <20V

25

°C

3.1

6.3

mV

nVO

Line regulation

7.5 V < Vin < 20 V

–40

°C to 85°C

8.1

mV

I

t = 100 µA

25

°C

2.2

3

Iout = 100 µA

–40

°C to 85°C

4

nVO

Load regulation sourcing

I

t =10mA

25

°C

14

27

mV

nVO

Load regulation sourcing

Iout = 10 mA

–40

°C to 85°C

35

mV

I

t =20mA

25

°C

22

40

Iout = 20 mA

–40

°C to 85°C

50

Dropout voltage

Iout = 10 mA

–40

°C to 85°C

1.4

V

IO

Output current

Vout = GND

25

°C

40

mA

Reverse leakage

Vin = –15 V

–40

°C to 85°C

0.5

10

µA

Quiescent current

25

°C

125

180

µA

Quiescent current

–40

°C to 85°C

225

µA

Standby current

–40

°C to 85°C

50

µA

ENABLE bias c rrent

ENABLE = 0.8 V

40

°Cto85°C

7

µA

ENABLE bias current

ENABLE = 2 V

–40

°C to 85°C

0.05

µA

Output noise voltage (see Note 3)

0.1 Hz < f < 10 Hz

25

°C

20

µVpp

Output noise voltage (see Note 3)

10 Hz < f < 1 kHz

25

°C

20

µVrms

Long-term stability of output voltage (see Note 4)

25

°C

70

ppm/

√k

Hz

NOTES:

2. Temperature coefficient is measured by dividing the change in output voltage by the specified temperature range.

Maximum Vout

Minimum Vout

∆TA

∆Vout

a

Vout

ppm

°C +

DV

out

Vout at 25°C

DT

A

Where:

∆TA is 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.

aV

out

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.