Item specifics
Description
AS3933-BTST Product Overview
The AS3933-BTST is an industry-leading 3-channel low-power ASK wake-up receiver from AMS, available in a TSSOP-16 package. The AS3933-BTST is specifically designed for remote wake-up applications in battery-powered systems. The AS3933-BTST supports a wide carrier frequency range of 15-150kHz, making it flexible for various applications including active RFID, high-value asset tracking, Real-Time Location Systems (RTLS), wireless sensor networks, access control, and Passive Keyless Entry (PKE) systems. The AS3933-BTST operates from 2.4V to 3.6V with a temperature range of -40℃ to +85℃.
AS3933-BTST Core Features
3-Channel ASK Wake-Up Receiver： The AS3933-BTST supports one, two, or three independent channels for 1D, 2D, or 3D wake-up pattern detection, providing reliable support for 3D antenna operation.
Ultra-Low Power Design： The AS3933-BTST's typical current consumption in 3-channel listening mode is only 2.3µA, with operating current of 6.1µA, significantly extending battery life.
Industry-Leading Wake-Up Sensitivity： The AS3933-BTST's typical sensitivity of 80µVrms is outstanding among similar devices, optimising BOM cost and wake-up range. Sensitivity levels are adjustable via SPI interface in strong RF fields or noisy environments.
Programmable Wake-Up Pattern： The AS3933-BTST supports 16-bit or 32-bit programmable Manchester wake-up patterns. Supports programmable data rate and Manchester decoding with clock recovery. Provides digital RSSI (Received Signal Strength Indicator) values for each active channel.
Built-In Automatic Antenna Tuning： The AS3933-BTST is the first in its class to offer a built-in automatic antenna tuner, automatically tuning the antenna to the desired carrier frequency for perfect matching.
Flexible Communication Interface： The AS3933-BTST supports SPI interface for register configuration, threshold setting, and event reading, facilitating integration with MCUs.
Wide Operating Temperature Range： The AS3933-BTST operates from -40°C to +85°C, meeting industrial-grade requirements.
AS3933-BTST Applications
The AS3933-BTST is widely used in active RFID tags and Real-Time Location Systems (RTLS) ; wireless sensor networks and access control systems; vehicle keyless entry and passive keyless start systems; operator identification and access control systems; high-value asset tracking; industrial or consumer sensor nodes requiring long-term standby and periodic wake-up; and electronic shelf labels (ESL) for battery-powered remote wake-up systems.
AS3933-BTST Key Advantages
Industry-Leading Sensitivity Combined with Ultra-Low Power： The AS3933-BTST achieves an excellent balance between 80µVrms high sensitivity and 2.3µA ultra-low power consumption, making it ideal for remote wake-up while extending battery life.
Flexible 1D/2D/3D Wake-Up with 3 Channels： The AS3933-BTST supports 1D, 2D, or 3D wake-up pattern detection, flexibly adapting to different antenna configurations and application scenarios while enhancing immunity to false wake-ups.
Built-In Automatic Antenna Tuning Simplifies Design： The AS3933-BTST’s built-in automatic antenna tuning ensures perfect matching to the desired carrier frequency, significantly simplifying antenna design and debugging, reducing BOM cost.
Programmable Wake-Up Patterns Enhance Noise Immunity： The AS3933-BTST’s 16/32-bit programmable Manchester wake-up patterns, combined with a false wake-up counter, effectively eliminate false triggers, maintaining reliable wake-up functionality in complex electromagnetic environments.
Wide Frequency Range Covers Mainstream LF Applications： The AS3933-BTST’s wide frequency range of 15-150kHz covers mainstream LF wake-up frequency bands such as 125kHz, providing flexibility for various LF sensing and wake-up applications.
TSSOP-16 Package Facilitates Production Assembly： The AS3933-BTST is available in a standard TSSOP-16 package, which facilitates production assembly and thermal management, suitable for high-volume production.
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RFQ
1. What is AS3933-BTST?
AS3933-BTST is a 3-channel low-power ASK wake-up receiver from AMS. It generates a wake-up signal upon detecting a data signal with a carrier frequency between 15-150 kHz, primarily used for remote wake-up in battery-powered systems.
2. What are the key specifications of AS3933-BTST?
Frequency Range: 15 kHz ~ 150 kHz
Supply Voltage: 2.4V ~ 3.6V
Current Consumption: 2.3 µA typical in 3-channel listening mode; ~8.3 µA in active mode
Wake-up Sensitivity: 80 µVrms typical
Data Rate: Manchester 0.5 ~ 4 kbit/s
Operating Temperature: -40°C ~ +85°C
Interface: SPI serial peripheral interface
3. What package does AS3933-BTST use?
The AS3933-BTST uses a 16-pin TSSOP package (Thin Shrink Small Outline Package). The supplier device package is 16-TSSOP, with a width of 0.173" (4.40mm). The device is also available in a QFN-16 (4x4mm) package. Moisture Sensitivity Level is MSL 3 (168 hours) .
4. What applications is AS3933-BTST suitable for?
The AS3933-BTST is widely used in:
Active RFID tags and Real-Time Location Systems (RTLS)
Passive Keyless Entry (PKE / RKE) systems
Wireless sensor networks and access control
Operator identification and gate access systems
High-value asset tracking and tracking in harsh conditions
5. What development tools support AS3933-BTST?
The official AS3933 Demo Kit is available, demonstrating 3D wake-up pattern detection, false wake-up readout, current measurement in different modes, and SPI communication access. Design resources can be obtained from the ScioSense website.
6. What is the operating temperature range of AS3933-BTST?
The AS3933-BTST's operating temperature range is -40°C to +85°C. This industrial-grade device is suitable for harsh environments.
7. What are the key features of AS3933-BTST?
1D/2D/3D wake-up pattern detection: Supports 1, 2, or 3 independent channels
Programmable 32-bit Manchester wake-up pattern
Automatic antenna tuning: Automatically matches the desired carrier frequency, simplifying antenna design
Digital RSSI output: Provides RSSI value for each active channel
Adjustable sensitivity: Can be adjusted in strong field or noisy environments
False wake-up counter and periodic forced wake-up (1s ~ 2h)
Flexible clock source: Supports 32.768 kHz crystal, internal RC oscillator, or external clock
8. What interfaces and protocols does AS3933-BTST support?
Main Interface: SPI serial peripheral interface for register configuration and data communication
Protocols: ISO 15693, EPC, ISO 14443, NFC
Modulation: ASK (Amplitude Shift Keying)
Encoding: Supports programmable data rate and Manchester decoding with clock recovery
9. What are the alternative models for AS3933-BTST?
GC3933 is a domestic alternative from Shanghai Guoxin, offering a complete replacement for AS3933-BTST. GC3933 features the same 15-150kHz frequency range, 3-channel low-frequency wake-up reception, and automatic antenna tuning. SI3933 is also available as a compatible option.
10. What are the design considerations when using AS3933-BTST?
Antenna: Requires 1, 2, or 3 LC resonators depending on the number of channels used
Clock Selection: Choose between 32.768 kHz crystal oscillator, internal RC oscillator, or external clock
Power Supply: Operating voltage range 2.4V ~ 3.6V, suitable for 3V battery operation
Package: TSSOP-16, height 1.20mm, surface mount type (SMT)
RoHS Compliance: RoHS compliant