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AT42QT2161-MMU The AT42QT2161-MMU is a capacitive touch sensor from Atmel supporting up to 16 button and slider inputs. It features an I2C interface, 10-bit resolution, and 11 LED driver channels, operating from 1.8V to 5.5V.
Mfr Part #:

AT42QT2161-MMU

Available from 1 distributors
Mfr Name: Atmel
Atmel
The AT42QT2161-MMU is a capacitive touch sensor from Atmel supporting up to 16 button and slider inputs. It features an I2C interface, 10-bit resolution, and 11 LED driver channels, operating from 1.8V to 5.5V.
✓ Total Stock: 5,600 pcs

AT42QT2161-MMU Available from 1 distributor

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
5,600 pcs
On Request
5600 pcs On Request 1 On Request On Request 1102+ On Request On Request
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AT42QT2161-MMU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Interface
LED Driver Channels
Mounting Type
Number of Inputs
Operating Temperature
Proximity Detection
Resolution
Supplier Device Package
Type
Voltage
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AT42QT2161-MMU Description

Short technical summary and product information.

The AT42QT2161-MMU is a capacitive touch sensor IC from Atmel designed for button and slider applications. It supports up to 16 touch inputs and includes 11 LED driver channels for backlighting or indication.

 

The device communicates via an I2C interface and offers 10-bit resolution for touch sensing. It operates over a wide voltage range of 1.8V to 5.5V and draws only 1.14mA typical current. The operating temperature range is -40°C to 85°C.

 

The sensor is housed in a 28-VFQFN exposed pad package (supplier package 28-VQFN 4x4mm) and is surface mountable. It does not include proximity detection. The part is RoHS3 compliant and has MSL level 1 (unlimited).

AT42QT2161-MMU Quick Information

Product Type: Capacitive Touch Sensor with Buttons and Slider
Canonical Name: AT42QT2161-MMU Capacitive Touch Sensor, 16 Inputs, I2C, 28-VQFN
Subcategory: Sensor, Capacitive Touch

AT42QT2161-MMU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

AT42QT2161-MMU Features

  • Supports up to 16 touch inputs.
  • I2C interface with 10-bit resolution.
  • Includes 11 LED driver channels.
  • Operates from 1.8V to 5.5V.
  • Surface mount 28-VQFN package.

AT42QT2161-MMU Applications

  • Used in capacitive touch button panels.
  • Ideal for slider control interfaces.
  • Suitable for consumer electronics with LED indicators.
  • Can be used in industrial control keypads.

AT42QT2161-MMU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the AT42QT2161-MMU?

1.8V to 5.5V.

What package is the AT42QT2161-MMU available in?

28-VFQFN Exposed Pad (supplier package 28-VQFN 4x4mm).

What is the operating temperature range?

-40°C to 85°C.

How many touch inputs does the AT42QT2161-MMU support?

Up to 16.

What interface does the AT42QT2161-MMU use?

I2C.

How many LED driver channels are included?

11.

What is the typical current consumption?

1.14mA.

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