AS3933 Datasheet | ams

Description The AS3933 is a 3-channel low power ASK receiver that is able to generate a wake-up upon detection of a data signal which uses a LF carrier frequency between 15-150 k Hz. The integrated correlator can be used for detection of a programmable 16-bit or 32-bit Manchester wake-up pattern. The device can operate using one, two, or three active channels. The AS3933 provides a digital RSSI value for each active channel, it supports a programmable data rate and Manchester decoding with clock recovery. The AS3933 offers an internal Clock Generator, which is either derived from a crystal oscillator or the internal RC oscillator. The user can decide to use the external clock generator instead. The programmable features of AS3933 enable to optimize its settings for achieving a longer distance while retaining a reliable wake-up generation. The sensitivity level of AS3933 can be adjusted in presence of a strong field or in noisy environments. Antenna tuning is greatly simplified, as the automatic tuning feature ensures perfect matching to the desired carrier frequency. The device is available in 16-pin TSSOP and 16-LD QFN (4x4mm) packages, and Do W (dice on wafer). Ordering Information and Content Guide appear at end of datasheet. Figure 1: Added Value of Using AS3933 Key Benefits & Features The benefits and features of AS3933, 3D Low Frequency Wake-Up Receiver are listed below: Benefits - Enables low power active tags - Selectable carrier frequency - One, two, or three channel operation - Highly resistant to false wake-ups - Improved immunity to false wake-ups - Allows frequency only detection - Improved range with best-in-class sensitivity Features - 3-channel ASK wake-up receiver - Carrier frequency range 15 - 150 k Hz - 1-D, 2-D, or 3-D wake-up pattern detection - 32-bit programmable wake-up pattern - Supporting doubling of wake-up pattern - Wake-up without pattern detection selectable - Wake-up sensitivity 80μVRMS (typ.) ams Datasheet [v1-08] 2015-Sep-02 Page...