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About this part

The Analog Devices ADR4540BRZ-R7 4.096 V Voltage Reference, Lot of 270 is made by Analog Devices and identified by manufacturer part number ADR4540BRZ-R7.

This listing is for the exact part number stated above. Compare the part number, condition and photos with your equipment before ordering.

Condition

This item is listed as New – Open Box. Unused. Packaging opened or missing.

The photos are part of the description — check them for labels, connectors, markings and any visible wear.

What's included

1 × Analog Devices ADR4540BRZ-R7 4.096 V Voltage Reference, Lot of 270.

Only the items listed here or clearly shown in the photos are included. Cables, manuals, mounting hardware and accessories are not included unless stated.

Identification & compatibility

Check the manufacturer (Analog Devices), the part number (ADR4540BRZ-R7) and the photos against your equipment. If you are not sure this is the right part, contact us before you order.

Price match

Found an identical item for less at a fixed price elsewhere? Contact us before you buy with the details, and we will review it.

Important information

Product information is based on what is available for this specific item. Where specifications or compatibility are critical to your application, confirm them before purchase.

Brand
Analog Devices
Part number
ADR4540BRZ-R7
Model
ADR4540BRZ-R7
Manufacturer
Analog Devices
Type
Ultralow noise, high accuracy series voltage reference
Output voltage
4.096 V
Initial output voltage error
±0.02% max (B grade)
Temperature coefficient
2 ppm/°C max, −40°C to +125°C (B grade)
Output noise (0.1 Hz to 10 Hz)
2.7 µV p-p typical
Input voltage
4.2 V to 15 V
Quiescent current
700 µA typical, 950 µA max
Output current
+10 mA source / −10 mA sink
Long-term drift
25 ppm, 1000 hours at 60°C
Package
8-lead SOIC_N (R-8), RoHS (Z)
Date code (label)
JUL-2017
Quantity (label)
270 pieces

Analog Devices ADR4540BRZ-R7, 270 pieces on a part reel. 4.096 V precision voltage reference, B grade: ±0.02% max initial error and 2 ppm/°C max drift. 8-lead SOIC. The reel carries a Digi-Key label (P/N ADR4540BRZ-R7DKR-ND, date code JUL-2017) and a stock label reading Qty 270.

Is this a full 1,000-piece reel?

No. Analog Devices ships the -R7 suffix on 1,000-piece reels. This one came from Digi-Key as a cut reel (DKR on their part number), and the quantity label on it reads 270.

ADR4540BRZ or ADR4540ARZ: which grade is this?

B grade, the tighter one. ADR4540BRZ is ±0.02% and 2 ppm/°C. The ADR4540ARZ is ±0.04% and 4 ppm/°C. Same pinout, same 8-lead SOIC_N package.

What input voltage does the ADR4540 need?

Analog Devices specifies the 4.096 V part with VIN from 4.2 V to 15 V. Dropout is 300 mV max at 2 mA. Quiescent current is 950 µA max, and the output sources or sinks up to 10 mA.

Ships from
Israel
Tracking
Included on every order

Import duties and taxes may apply in your country and are paid by the buyer on delivery.

Returns
Not accepted

Return terms differ from item to item — this item's own policy is shown above.

Whatever it says, an item that arrives faulty or not as described is covered: tell us within 30 days of delivery and we will refund or replace it.

Consumers in the EU, the UK and Israel keep their legal right to cancel within 14 days. Full details and the return request form are on our Returns and warranty page.

Read the full returns & warranty policy

Questions about this part

How many ADR4540BRZ-R7 are on the reel?

The stock label on the reel reads Qty 270.

What does R7 mean in ADR4540BRZ-R7?

Tape and reel packing. ADR4540BRZ without the suffix ships in tubes of 98, the -R7 on 1,000-piece reels.

How does a precision voltage reference work?

It holds a fixed output, here 4.096 V, steady over input, load and temperature changes. An ADC or DAC uses that voltage as the yardstick for every conversion, so its error goes straight into the measurement.

Why 4.096 V?

With a 12-bit converter, 4.096 V divides into exactly 1 mV per step, which makes the math easy.

Which other voltages are in the ADR45xx family?

ADR4520 is 2.048 V, ADR4525 is 2.5 V, ADR4530 is 3.0 V, ADR4533 is 3.3 V and ADR4550 is 5.0 V. Only the ADR4540 is on this reel.

What temperature range is it rated for?

−40°C to +125°C.

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