IS1685S

Datasheet IS1685S Noise Reduction Mono Headset IC with A2DP streaming 1. General Description ISSC IS1685S is a compact, high integration, ultra-low cost, CMOS single-chip RF + baseband IC for Bluetooth v3.0(EDR) (Enhanced Data Rate) 2.4GHz applications. This chip is fully compliant with Bluetooth specification and completely backward-compatible with Bluetooth 1.1, 1.2, 2.0 or 2.1 systems. It incorporates Bluetooth 1M/2M/3Mbps RF, single-cycle 8051, TX/RX modem, memory controller, task/hopping controller, UART interface, and ISSC Bluetooth software stack to achieve the required Bluetooth v3.0(EDR) functions. The IS1685S is designed to support high quality voice application, an audio engine and a high performance mono CODEC are integrated for this purpose. The audio engine provides the A-law/μ-law/CVSD encoding/decoding and also the enhanced noise reduction and echo supression to offer the best voice quality in the both sending and receiving sides. In addition, to minimize the external components required for portable devices, a power manager unit including the Li-ion battery charger, a switching regulator and LDOs are integrated to reduce BOM cost for various Bluetooth applications. The device incorporates built-in self-test (BIST) and auto-calibration functions to simplify production test. 4F, No.8, Dusing Rd., Hsinchu Science Park, Hsinchu city 30078, Taiwan, R.O.C Phone: 886-3-577-8385 Fax: 886-3-577-8501 Version: 1.0 3/11/2013 Preliminary Datasheet IS1685S 2. Features S...