WT32i
WT32i Bluetooth Audio Module
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Americas
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Americas, Asia, Australia, Europe
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Worldwide
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Americas, China, Hong Kong
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Worldwide
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Worldwide
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Worldwide
Product Overview
WT32i is an audio specific Bluetooth 3.0 module with excellent radio frequency performance and enhanced audio features, enabling a best in class Bluetooth audio experience. In addition to a certified Bluetooth radio and software stack, WT32i also contains a DSP, stereo audio codec, and battery charger making it ideal for fixed and portable audio applications. WT32i includes Bluegiga's iWRAP6 Bluetooth stack software which implements A2DP, AVRCP v.1.5 profiles and supports aptX® and AAC audio codecs for stereo audio applications. For hands-free applications iWRAP6 software also supports HFP v.1.6, HSP, MAP and PBAP and CVC® echo cancellation software. For data communications to Android and iOS applications iWRAP6 also implements Bluetooth Serial Port Profile (SPP) and Apple iAP profiles. WT32i is an ideal solution for developers who want to quickly integrate the latest Bluetooth audio technologies without the time and costs typically involved with a Bluetooth audio chipset design.
Key Benefits
- Excellent Radio Performance
- Up to 200 meter range (between two WT32i's)
- A2DP streaming up to 50 meters with typical smartphone
- Wide Bluetooth Profile Support
- Enables wide range of uses cases
- Differentiation from simple Bluetooth speakers
- Superior audio features
- Integrated Bluetooth audio profiles
- On-board DSP and 16-bit stereo codec
- aptX®, AAC, WBS
- Optional CVC® echo cancellation
- Bluetooth and Regulatory Qualifications
- Proven interoperability
- Minimal qualification costs
- Field upgradable firmware
Specifications
Radio features:
- Bluetooth 3.0
- Bluetooth class 1 radio
- Transmit power: +6.5 dBm
- Receiver sensitivity: -90 dBm
- Integrated chip antenna or U.FL connector
Hardware features:
- UART host interfaces
- 802.11 co-existence interface
- 10 software programmable IO pins
- Li-Ion and Li-Poly battery charger
- Operating voltage: 1.8V to 3.6V
- Temperature range: -40° C to +85°C
- Dimensions: 35.75 x 14.50 x 2.6mm
Audio features:
- Integrated DSP
- 16-bit stereo codec
- 44.1kHz ADC, 48kHz DAC
- Analog, I2S, PCM, SPDIF, and microphone interfaces
- Optional aptX® and AAC stereo audio codecs
- Optional CVC® echo cancellation
- Wide Band Speech
Qualifications:
- Bluetooth
- CE
- FCC
- IC
- Japan
- South-Korea
Software:
- Bluegiga's iWRAP6 Bluetooth stack
- A2DP, AVRCP 1.5, HFP 1.6, and HSP
- SPP and Apple iAP1 and iAP2
- PBAP, MAP, HID, DI, OBEX, DUN and HDP
- ASCII commands over UART
Documentation and Software
Download data sheets, SDKs / software releases, app notes, example applications, reference designs training material, user guides, reference designs, videos and more. Download our side-by-side product comparison guide.
The WT32i development kit is designed to evaluating the WT32i Bluetooth Audio Module and prototyping Bluetooth stereo and mono audio applications.
WT32i Development Kit Contents:
- Evaluation board for WT32i Bluetooth Audio module containing
- WT32i-A Bluetooth module with integrated chip antenna
- USB or battery power supply
- ON/OFF button when used with the built-in battery
- USB to UART bridge
- USB interface
- Audio features:
- Reference design for the WT32i’s internal audio codec with by-passable external audio power amplifier (PA)
- 3.5mm stereo audio inputs and outputs
- Dual RCA analogue audio inputs and outputs
- 3.5mm microphone input
- On-board silicon microphone
- External audio codec (TLV320AIC32IRHB) connected to the WT32i’s I2S interface
- Dual RCA analogue audio inputs and outputs for the external codec
- 3.5mm stereo audio inputs and outputs for the external codec
- 5 push buttons with indicator LEDs connected to WT32i’s GPIOs
- 850mA rechargeable Li-Ion battery with charger connected to the USB power supply
- Current test points for each power supply and for the board in total
- Module IO’s available via a pin header
- I2C expansion connector for the WT32i’s I2C interface
- USB cable
- Firmware programming cable
