TN100 STMICROELECTRONICS | Alldatasheet
Document overview
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Technical content
Features
■ Single-chip solution for ISM 2.45 GHz RF transceiver ■ Built-in ranging capability for link distance estimation ■ Modulation technique: chirp spread spectrum (CSS) ■ FDMA support: 7 channels, 3 non-overlapping ■ Data rates: 2, 1 Mbps; 500, 250, 125, 62.5, 31.25 kbps ■ Adjustable output power from -33 dBm to 0d B m ■ Receiver sensitivity: -97 dBm @ 250 kbps, FEC, and BER=10-3 ■ In-band carrier-to-interference C/I = 0 to 3 dB @ 250 kbps & C=-80 dBm ■ Supports external power amplifier to increase output power ■ High precision ranging: 2 m indoors and 1 m outdoors ■ Supply voltage range from 2.3 V to 2.7 V ■ Current consumption: 27 mA (RX), 30 mA (TX) @ 0 dBm ■ Standby current with active RTC: 2 µA ■ RSSI sensitivity: -95 dBm ■ 32.768 kHz clock available for external µC ■ Integrated fast SPI interface (32 Mbps) ■ Integrated MAC controller with FEC, CRC checking ■ CSMA/CA, FDMA, and TDMA modes ■ Automatic retransmission and acknowledgement ■ Automatic address matching ■ Industrial temperature range from -40°C to +85°C ■ QFN48 package
1 Description
The TN100 transceiver is a highly integrated mixed signal chip that uses the wireless communication technology CSS (chirp spread spectrum) developed by Nanotron Technologies. With its unique ranging capability, TN100 can measure the link distance between two nodes. Thus, TN100 supports location awareness applications including location based services (LBS) and asset tracking (2D/3D RTLS). Ranging is performed during regular data communication and does not require additional infrastructure, power, and/or bandwidth. For an even better ranging accuracy, a high precision mode is provided. SDS-TWR algorithm (symmetrical double-sided two-way ranging) allows superior accuracy even with the use of low cost crystals for the oscillators. The TN100 transceiver IC is designed to build up robust, short distance wireless networks operating in the 2.45 GHz ISM band with extremely low power consumption over a wide range of operating temperatures. The TN100 supports 7-frequency channels with 3 non-overlapping channels. This provides support for multiple physically independent networks and improved coexistence performance with existing 2.4 GHz wireless technologies. Data rates are selectable between 31.25 kbps and 2 Mbps. Due to the chip's unique chirp pulse, adjustment of the antenna is not critical. This significantly simplifies the system's installation and maintenance ("pick-and- place"). The TN100 transceiver includes a sophisticated MAC controller with CSMA/CA and TDMA support as well as forward error correction (FEC) and 128-bit hardware encryption. It also provides scrambling, automatic address matching, and packet retransmission, thus minimizing the requirements for microcontroller and software. Through its high-speed standard SPI interface, the TN100 can be interfaced with a wide range of external micro-controllers. It includes a 4 kbits frame buffer which allows even very slow microcontrollers to work with the transceiver. This means that several receive and transmit frames can be stored simultaneously in the buffers. This solution eliminates the problems of different peak data rates between air and microcontroller interfaces. Target applications for the TN100 include:
- Asset tracking
- Enabling 2D/3D real-time location systems
- Security
- Industrial monitoring and control
- Medical applications
2 Pin assignment
This section provides a brief overview of the location and function of each pin. Figure 1. QFN48 package top view Table 1. Pin descriptions
1 TestCom LF signal Test pin for analogue signals
2 VSSA Supply Power supply for analog parts
3 VSSA Supply Power supply for analog parts
4 VDDA Supply Power supply for analog parts
5 Xtal32kP Analog IO Crystal 32768 Hz, input from external 32768
6 Xtal32kN Analog IO Crystal 32768 Hz
7 VSSD Supply Power supply for digital parts
10 VSSD Supply Power supply for digital parts
11 POnReset Digital input Power on reset line
13 SpiClk Digital input SPI clock
14 SpiSSn Digital input SPI slave selected
15 SpiTxD Digital output SPI transmit data (MISO)
16 SpiTxD Digital Input SPI receive data (MOSI)
17 VDDD Supply Power supply for digital parts
18 D0 Digital IO Digital input or output line 0
19 D1 Digital IO Digital input or output line 1
20 D2 Digital IO Digital input or output line 2
21 D3 Digital IO Digital input or output line 3
22 VDDD Supply Power supply for digital parts
24 VSSD Supply Power supply for digital parts
25 VDDD Supply Power supply for digital parts
26 VSSD Supply Power supply for digital parts
27 Tx/Rx Digital output Output signal to distinguish between transmit
28 VDDD Supply Power supply for digital parts
29 VSSD Supply Power supply for digital parts
30 Test Digital IO Pin for digital tests
31 RRef Analog IO Pin for external reference resistor
32 VDDA Supply Power supply for analog parts
33 TestRxP LF Signal Test pin for RX signals
34 TestRxN LF Signal Test pin for RX signals inverted
35 VSSA Supply Power supply for analog parts
36 VDDA Supply Power supply for analog parts
37 VDDA Supply Power supply for analog parts
38 VSSA Supply Power supply for analog parts
39 RxN RF input Differential receiver input (inverted)
40 RxP RF input Differential receiver input
41 VSSA Supply Power supply for analog parts
42 VSSA Supply Power supply for analog parts
Table 1. Pin descriptions (continued)
43 TxN RF output Differential transmitter output (inverted)
44 TxP RF output Differential transmitter output
45 VSSA Supply Power supply for analog parts
46 VBalun Supply
47 VDDA Supply Power supply for analog parts
48 VDDA Supply Power supply for analog parts
3 Ordering information
range Package Packing Marking TN100Q -40°C to +85°C QFN48 Tube TN100Q TN100QT -40°C to +85°C QFN48 tape & reel TN100QT
4 Revision history
Table 2. Document revision history 15-Dec-2006 1 Initial release.