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Texas Instruments LM385DRG4-2-5 — Analog & Data Acquisition
Texas Instruments

LM385DRG4-2-5 Shunt Voltage Reference, 2.5V Fixed, ±3%

MPNLM385DRG4-2-5
Obsolete

Texas Instruments LM385DRG4-2-5 shunt voltage reference, fixed 2.5V output, ±3% tolerance, 20 mA output, 8-SOIC surface mount, 0°C to 70°C.

$0.5700Ref. price · indicative, final on quote
LM385DRG4-2-5 datasheet
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
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Specifications

LM385DRG4-2-5 Technical Specifications
ParameterValue
Output typeFixed
Mounting typeSurface Mount
Reference typeShunt
Voltage - output (Min (Fixed))2.5V
Current - output20 mA
Current - cathode20 µA
Operating temperature0°C ~ 70°C (TA)
PackageTape & Reel (TR) Cut Tape (CT)
Tolerance±3%
Case8-SOIC (0.154\", 3.90mm Width)
Noise - 10Hz to 10kHz120µVrms
Temperature coefficient20ppm/°C Typical

Product details

Shunt reference, 2.5V fixed — the BOM-fit anchor

The 8-SOIC package fits standard surface-mount assembly lines.

120 µVrms noise — the quiet side of a shunt reference

For a 2.5 V reference that is 48 ppm of the output — adequate for 8-bit to 10-bit ADC references or general-purpose comparator thresholds. The temperature coefficient is 20 ppm/°C typical, which keeps drift manageable across the commercial temperature range.

No official successor part is listed on the record, so any replacement must be evaluated for pin-compatibility and electrical fit.

Frequently asked questions

Is LM385DRG4-2-5 obsolete?

Yes, the LM385DRG4-2-5 is listed as Obsolete. It is no longer manufactured by Texas Instruments, but existing stock can be sourced through independent channels.

Can LM385DRG4-2-5 be used as a 2.5V reference?

Yes. The LM385DRG4-2-5 is a fixed 2.5 V shunt reference. It requires a cathode resistor to set the bias current above 20 µA and below the 20 mA maximum. The ±3% tolerance and 20 ppm/°C drift define the accuracy budget for the design.