TH7122ENE-BAA-000-RE
TH7122ENE-BAA-000-RE Datasheet
TH7122
| Part | Datasheet |
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TH7122ENE-BAA-000-RE |
TH7122ENE-BAA-000-RE (pdf) |
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TH7122ENE-BAA-000-TR |
TH7122ENE-BAA-000-TR |
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| TH7122 27 to 930MHz FSK/FM/ASK Transceiver Single chip solution with only a few external components Stand-alone fixed-frequency user mode Programmable multi-channel user mode Low current consumption in active mode and very low standby current PLL-stabilized RF VCO LO with internal varactor diode Lock detect output in programmable user mode On-chip AFC for extended input frequency acceptance range Ordering Code 3wire bus serial control interface FSK/ASK mode selection FSK for digital data or FM for analog signal reception RSSI output for signal strength indication and ASK reception Peak detector for ASK detection Switchable LNA gain for improved dynamic range Automatic PA turn-on after PLL lock ASK modulation achieved by PA on/off keying 32-pin Low profile Quad Flat Package LQFP Product Code TH7122 Temperature Code E Package Code NE Option Code BAA-000 BAA-000 Packing Form Code RE TR Legend Temperature Code Package Code Packing Form: E for Temperature Range -40°C to 85°C NE for LQFP RE for Reel, TR for Tray Ordering example: TH7122ENE-BAA-000-RE Application Examples General bi-directional half duplex digital data RF signaling or analog signal communication Remote Keyless Entry RKE Low-power telemetry systems Alarm and security systems Wireless access control Garage door openers Networking solutions Active RFID tags Remote controls Home and building automation Pin Description LF VEE_PLL TNK_LO VCC_PLL FS1/LD VEE_DIG FS0/SDEN OUT_PA IN_LNA VEE_LNA OUT_LNA GAIN_LNA IN_MIX VEE_IF OUT_MIX 24 25 17 16 TH7122 RE/SCLK VCC_DIG ASK/FSK IN_DTA FSK_SW RO VEE_RO IN_IFA VCC_IF IN_DEM INT2/PDO INT1 OUT_DEM RSSI OUT_DTA The TH7122 is a single chip FSK/FM/ASK transceiver IC. It is designed to operate in low-power multichannel programmable or single-channel stand-alone, half-duplex data transmission systems. It can be used for applications in automotive, industrial-scientific-medical ISM , short range devices SRD or similar applications operating in the frequency range of 300 MHz to 930 MHz. In programmable user mode, the transceiver can operate down to 27 MHz by using an external VCO varactor diode. Page 1 of 45 Data Sheet Nov/15 TH7122 27 to 930MHz FSK/FM/ASK Transceiver Table of Content 1 Theory of Operation General 4 Technical Data Overview 4 Note on ASK 4 Block 5 User Mode Features 5 2 Pin Definitions and Descriptions 3 Functional Description PLL Frequency Synthesizer 11 Reference Oscillator 12 Reference Divider 12 Feedback Divider 12 Frequency Resolution and Operating Frequency 12 Phase-Frequency Detector 13 Lock Detector 13 Voltage Controlled Oscillator with external Loop Filter 14 Loop Filter 14 Receiver Part 14 LNA 15 Mixer 15 IF Amplifier 15 ASK Demodulator 15 FSK Demodulator 16 Transmitter Part 16 Power Amplifier 16 Output Power Adjustment 17 Modulation Schemes 17 ASK Modulation 17 FSK Modulation 18 Crystal Tuning 18 4 Description of User Stand-alone User Mode Operation 19 Frequency Selection 19 Operation Mode 19 Modulation Type 20 LNA Gain Mode 20 Programmable User Mode 20 Serial Control Interface Description 20 |
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