IS2025
The IS2025 stereo audio chip is a compact, highly integrated, CMOS single-chip RF and baseband IC for Bluetooth v4.1 + EDR 2.4GHz applications. This chip is fully compliant with Bluetooth specifications and is completely backward-compatible with Bluetooth 3.0, 2.0 or 1.2 systems. It incorporates Bluetooth 1M/2M/3Mbps RF, single-cycle 8bit MCU, TX/RX modem, 5-port memory controller, task/hopping controller, UART interface, and Microchip’s own Bluetooth software stack to achieve the required BT v4.1 with EDR functions.
For delivering superior audio and voice quality, it also integrates a DSP co-processor, a PLL, and a CODEC dedicated for voice and audio applications. For voice, not only basic CVSD encoding and decoding but also enhanced noise reduction and echo cancellation are implemented by the built-in DSP to achieve better quality in both sending and receiving sides. For the enhanced audio applications, SBC/AAC_LC decoding functions can be also carried out by DSP to satisfy Bluetooth A2DP requirements.
In addition, to minimize the external components required for portable devices, a battery voltage sensor, battery charger, a switching regulator and LDO are integrated to reduce system BOM cost for various Bluetooth applications. As the market of portable/wireless speakers demand is increasing, a stereo 2 channels 2.3W class-D amplifier which provides up to 100dB SNR is also built-in to reduce BOM cost and PCB area.
Features- Compliant with Bluetooth Specification v.4.1 (EDR) in 2.4 GHz ISM band
- Supports the following profiles:
HFP 1.6
HSP 1.1
A2DP 1.2
AVRCP 1.5
SPP 1.0
PBAP 1.0
- HFP 1.6
- HSP 1.1
- A2DP 1.2
- AVRCP 1.5
- SPP 1.0
- PBAP 1.0
- 16MHz main clock input
- Built-in internal ROM for program memory
- Support to connect to two hosts ( phones,
tablets…) with HFP or A2DP profiles simultaneously
- Adaptive Frequency Hopping (AFH) avoids occupied RF channels
- Fast Connection supported
- Fully-certified Bluetooth 4.1 (EDR) system in 2.4 GHz ISM band
- Combined TX/RX RF terminal simplifies external matching and reduces external antenna switches
- Max. +4dBm output power with 20 dB level control from register control
- Built-in T/R switch for Class 2/3 application
- To avoid temperature variation, temperature sensor with temperature calibration is utilized into bias current and gain control
- Fully integrated synthesizer has been created. There requires no external VCO, varactor diode, resonator and loop filter
- Crystal oscillation with built-in digital trimming for temperature/process variations
- Noise suppression
- Echo suppression
- SBC and optional AAC decoding
- Packet loss concealment
- Built-in four languages (Chinese/ English/ Spanish/ French) voice prompts and 20 events for each one
- 20 bit DAC and 16 bit ADC codec
- 98dB SNR DAC playback
- Built-in 2 channel 2.3W class-D amplifier for a 4Ω speaker
- Built-in Lithium-ion battery charger (up to 350mA)
- Integrate 3V, 1.8V configurable switching regulator and LDO
- Built-in ADC for battery monitor and voltage sense.
- A line-in port for external audio input
- Two LED drivers
- High speed HCI-UART (Universal Asynchronous Receiver Transmitter) interface (up to 921600bps)
- 8 x 8 mm2 68QFN package
| Parameter|
Parameter Name
Value
| Value | |
Bluetooth Classic-Data/SPP
Yes
|
Yes
| |
Bluetooth Classic-Audio
Yes
|
Yes
| |
Audio Channels
Stereo
|
Stereo
| |
Analog Audio Out
Yes
|
Yes
| |
MIC-in
2
|
2
| |
Line-in
Yes
|
Yes
| |
I2C
1
|
1
| |
TX Power
+4dBm
|
+4dBm
| |
GPIO
10
|
10
| |
Pin Count
68
|
68
| |
Package Type
QFN
|
QFN
| |
Package Size
8 x 8 mm
|
8 x 8 mm
| |
Min Temp Range
-20C
|
-20C
| |
Max Temp Range
70C
|
70C
| |
Op Voltage Min
3.0V
|
3.0V
| |
Op Voltage Max
4.25V
|
4.25V
|
|
Documents
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| IS2025S-203 | | 0.334000 | 68 | VQFN | 8x8x0.9mm | Matte Tin | e3 |  |  |
| IS2025S-203-TRAY | | 0.865385 | 68 | VQFN | 8x8x0.9mm | Matte Tin | e3 | | |
| IS2025S-002 | | 0.334000 | 68 | VQFN | 8x8x0.9mm | Matte Tin | e3 | | |
| IS2025S-002-TRAY | | 0.865385 | 68 | VQFN | 8x8x0.9mm | Matte Tin | e3 | | |
