LM185-2.5 查看數據表（PDF） - Linear Technology

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LM185-2.5

Micropower Voltage Reference

Linear Technology 

LM185-2.5/

LM285-2.5/LM385-2.5

ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. (Note 2)

SYMBOL PARAMETER

CONDITIONS

LM185-2.5/285-2.5

MIN TYP MAX

LM385-2.5/385B-2.5

MIN TYP MAX

UNITS

VZ

Reverse Breakdown Voltage

TA = 25°C, 20µA ≤ IR ≤ 20mA

LM185-2.5/285-2.5

2.462 2.500 2.538

V

LM385-2.5

2.425 2.500 2.575

V

LM385B-2.5 (Note 3)

2.462 2.500 2.538

V

∆VZ

Average Temperature Coefficient 20µA ≤ IR ≤ 20mA (Note 3)

20

∆Temp

20

ppm/°C

IMIN

Minimum Operating Current

∆VZ

Reverse Breakdown Voltage

∆IR

Change With Current

rZ

Reverse Dynamic Impedance

en

∆VZ

∆Time

Wide Band Noise (RMS)

Long Term Stability

TMIN ≤ TA ≤ TMAX

q

20µA ≤ IR ≤ 1mA

TA = 25°C

TMIN ≤ TA ≤ TMAX

q

1mA ≤ IR ≤ 20mA

TA = 25°C

TMIN ≤ TA ≤ TMAX

q

IR = 100µA (Note 4)

TA = 25°C

TMIN ≤ TA ≤ TMAX

q

10Hz ≤ f ≤ 10kHz, IR = 100µA

TA = 25°C ± 0.1°C, IR = 100µA

8

20

1.0

1.5

10

20

0.2 0.6

1.5

120

20

8 20

2.0

2.5

20

25

0.4 1.0

1.5

120

20

µA

mV

mV

mV

mV

Ω

Ω

µV

ppm/kHr

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: All specifications are for TA = 25°C unless otherwise noted. For the

LM185-2.5 TMIN = – 55°C and TMAX = 125°C. For LM285-2.5, TMIN = –

40°C and TMAX = 85°C. For LM385-2.5, TMIN = 0°C and TMAX = 70°C.

Note 3: For very low initial tolerance, consult LT1004 data sheet. The

LT1004 is a low cost, pin for pin substitution device. For guaranteed

temperature coefficient consult the LT1034-2.5 data sheet.

Note 4: Guaranteed but not tested.

3

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