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| Datasheet File OCR Text: |
| A7121 Preliminary Typical Applications Wireless digital audio Wireless Mouse and Keyboard 2.4GHz ISM Band Communication System 2.4GHz GFSK Transceiver Wireless game pad Wireless toy General Description A7121 is a monolithic CMOS integrated circuit for wireless applications in 2.4GHz ISM band. The device is provided in a 32-lead plastic QFN5X5 packaging and is designed as a complete GFSK transceiver up to 3Mbps data rate. The chip features a fully programmable frequency synthesizer with integrated VCO circuitry. Features 2400MHz~2484MHz worldwide license free frequency band Up to 79 selectable channels 2.2 V - 2.8 V voltage supply Programmable output power up to 0dBm Channel switching time < 200us 1 or 3Mbps high speed data rate -20 C to 85 C operating temperature -87dBm sensitivity Direct / FIFO mode operation Modem interface for low speed, low cost microcontroller Low IF architecture with few external components Pin Configurations SP I _ TXD SP I _RXD 26 SP I _ CS BP _ LP F SP I _ CLK BP _ DS VDD _ D 25 32 RSS I 31 30 29 28 27 BP _ L I M 2 BP _ L I M1 BP _ BPF V DD _ A RF I RFO V DD _ VCO BP _ VCO 1 2 3 4 5 6 7 24 23 22 RX _ C L K RX _ SYN CD _ TXEN TRXD TXD F _ CL K REST EN MS0 A7121 10 11 12 13 14 15 BB _CL K 16 21 20 19 18 17 8 9 VDD _ P L L QFN Package Top View PRELIMINARY (Mar. 2005, Version 0.6) F P _ RDY MS 1 CPO XS VT XI 1 AMIC Technology, Corp. A7121 Application Circuit Important Notice: AMIC reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice. AMIC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in lifesupport applications, devices or systems or other critical applications. Use of AMIC products in such applications is understood to be fully at the risk of the customer. PRELIMINARY (Mar. 2005, Version 0.6) 2 AMIC Technology, Corp. |
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