It delivers a ±0.8% initial tolerance and a typical temperature coefficient of 20 ppm/°C, making it a straightforward choice for a precision bias or ADC reference in commercial-temperature equipment — think benchtop instruments, power-supply monitoring, or general-purpose data-acquisition boards where the ambient stays between 0°C and 70°C. The shunt topology means it behaves like a two-terminal Zener: you bias it through a resistor from a higher supply, and the reference draws whatever cathode current it needs to regulate the output. The minimum cathode current is 20 µA, and the maximum output current is 20 mA — that window sets the resistor value and the load budget. Stay above 20 µA through the device and the output holds 2.5 V within tolerance; pull more than 20 mA from the output and regulation drops out.
LT1004CDRG4-2-5 Shunt Voltage Reference, 2.5V ±0.8% 8-SOIC
Texas Instruments LT1004CDRG4-2-5, shunt voltage reference, 2.5V fixed output, ±0.8% tolerance, 20 µA min cathode current, 20 mA output, 8-SOIC surface mount, 0°C to 70°C.
Specifications
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting | Surface Mount |
| Reference type | Shunt |
| Voltage - output (Min (Fixed)) | 2.5V |
| Output current | 20 mA |
| Current - cathode | 20 µA |
| Operating temperature | 0°C ~ 70°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Tolerance | ±0.8% |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Noise - 10Hz to 10kHz | 120µVrms |
| Temperature coefficient | 20ppm/°C Typical |
Product details
Frequently asked questions
Is LT1004CDRG4-2-5 obsolete?
No. The lifecycle status is Active, with RoHS3 compliance. There is no last-time-buy or discontinuation notice on this part.
What is the cathode current (Imin) for LT1004?
The minimum cathode current is 20 µA. The device regulates the output at 2.5 V as long as the current through it stays above that threshold and below the 20 mA maximum output.
How to use LT1004CDRG4-2-5 in a circuit?
Connect a resistor from a positive supply (e.g., 5 V) to the cathode (the output pin). The anode goes to ground. The resistor value is chosen so that the current through the LT1004 is between 20 µA and 20 mA at all load conditions. The output is the cathode node — it holds at 2.5 V relative to ground.