Mfr Part #:

U4082B

Mfr Name: Atmel

The Atmel U4082B is a low-voltage voice-switched speakerphone IC designed for hands-free operation. It offers features like adjustable gain and a mute function.

✓ Total Stock: 12,914 pcs

$ Price Range: $0.28

U4082B Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	12,914 pcs On Request	12914 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

U4082B Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Atmel
Function	Mute Function
Mounting Type	Surface Mount
Operating Voltage	3V
SVHC Present	Not Present
Supply Current	5.5mA

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U4082B Description

Short technical summary and product information.

The Atmel U4082B is a versatile, low-voltage voice-switched speakerphone integrated circuit designed for hands-free operation. It operates within a voltage range of 3V to 6.5V and includes a significant attenuator gain range of 52 dB between transmit and receive functions. The device incorporates an adjustable microphone amplifier gain, a mute function, and a chip disable feature for active/standby modes. It also features an on-board filter and a dial tone detector.

This IC is compatible with the U4083B speaker amplifier and supports fast channel switching for quasi-duplex operation, ensuring proper performance even in noisy surroundings. The U4082B is available in a SO28 package and is suitable for applications requiring efficient voice switching and amplification.

Key electrical features include four-point signal sensing for improved sensitivity and a monitoring system for background noise levels. The device can be powered by a low supply or via a telephone line, typically drawing 5.5 mA. Stand-alone operation is possible with a coupling transformer or in conjunction with a handset speech network.

U4082B Quick Information

Product Type: Voice-Switched Speakerphone IC

Canonical Name: U4082B Voice-Switched Speakerphone IC

Subcategory: Power Management ICs

U4082B Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

U4082B Estimated Pricing

Qty	Low	High
1+	$0.28	$0.28

Estimated market price range - modelled values for guidance only, not live distributor offers.

U4082B Features

Low-voltage operation from 3V to 6.5V.
52 dB attenuator gain range.
Adjustable microphone amplifier gain.
Mute and chip disable functions.
SO28 package for surface mounting.

U4082B Applications

Hands-free speakerphone systems.
Telecommunication devices.
Voice-activated applications.
Noise-canceling audio circuits.

U4082B FAQs

5 frequently asked questions generated from this part’s specifications.

What is the operating voltage range of the U4082B?

3V to 6.5V.

What package does the U4082B come in?

SO28 surface mount package.

What is the typical supply current of the U4082B?

5.5 mA.

Does the U4082B have a mute function?

Yes, it includes a mute function.

What is the attenuator gain range of the U4082B?

52 dB between transmit and receive.