LM3915 datasheet(4/25 Pages) NSC

4 / 25 page

Electrical Characteristics (Notes 2, 4) (Continued)

Parameter

Conditions (Note 2)

Min

Typ

Max

Units

SUPPLY CURRENT

Standby Supply Current

(All Outputs Off)

+ = +5V, I

L(REF) = 0.2 mA

+ = +20V, I

L(REF) = 1.0 mA

2.4

4.2

6.1

9.2

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which

guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit

is given, however, the typical value is a good indication of device performance.

Note 2: Unless otherwise stated, all specifications apply with the following conditions:

3VDC ≤ V

+ ≤ 20 VDC

−0.015V

≤ VRLO ≤ 12 VDC

TA = 25˚C, IL(REF) = 0.2 mA, pin 9 connected to pin 3 (bar mode).

3VDC ≤ VLED ≤ V

VREF,VRHI,VRLO ≤ (V

+ − 1.5V)

For higher power dissipations, pulse testing is used.

−0.015V

≤ VRHI ≤ 12 VDC

≤ VIN ≤ V+ − 1.5V

Note 3: Accuracy is measured referred to 0 dB = + 10.000 VDC at pin 5, with + 10.000 VDC at pin 6, and 0.000 VDC at pin 4. At lower full scale voltages, buffer and

comparator offset voltage may add significant error. See table for threshold voltages.

Note 4: Pin 5 input current must be limited to ±3 mA. The addition of a 39k resistor in series with pin 5 allows ±100V signals without damage.

Note 5: Bar mode results when pin 9 is within 20 mV of V+. Dot mode results when pin 9 is pulled at least 200 mV below V+. LED #10 (pin 10 output current) is

disabled if pin 9 is pulled 0.9V or more below VLED.

Note 6: The maximum junction temperature of the LM3915 is 100˚C. Devices must be derated for operation at elevated temperatures. Junction to ambient thermal

resistance is 55˚C/W for the molded DIP (N package).

Threshold Voltage (Note 3)

Output

Min

Typ

Max

Output

Min

Typ

Max

−27

0.422

0.447

0.531

−12

2.372

2.512

2.819

−24

0.596

0.631

0.750

−9

3.350

3.548

3.825

−21

0.841

0.891

1.059

−6

4.732

5.012

5.309

−18

1.189

1.259

1.413

−3

6.683

7.079

7.498

−15

1.679

1.778

1.995

9.985

10.015

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