TX6004

TX6004 RFM | Alldatasheet

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Technical content

RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 E-mail: info@rfm.com Page 1 of 6 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 http://www.rfm.com ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. TX6004-070805 Designed for Short-Range Wireless Data Communications Supports RF Data Transmission Rates Up to 115.2 kbps

3 V, Low Current Operation plus Sleep Mode

Stable, Easy to Use, Low External Parts Count Complies with Directive 2002/95/EC (RoHS) The TX6004 hybrid transmitter is ideal for short-range wireless data applications where robust operation, small size, low power consumption and low cost are required. All critical RF functions are contained in the hybrid, simplifying and speeding design- in. The TX6004 includes provisions for both on-off keyed (OOK) and amplitude-shift keyed (ASK) modulation. The TX6004 employs SAW filtering to suppress output harmonics, facilitating compliance with FCC 15.249 and similar regulations. Rating Value Units Power Supply and All Input/Output Pins -0.3 to +4.0 V Non-Operating Case Temperature -50 to +100 Soldering Temperature (10 seconds / 5 cycles max.) 260

914.00 MHz

Electrical Characteristics

913.80 914.20 MHz Modulation Types OOK & ASK OOK Data Rate kbps ASK Data Rate 115.2 kbps Transmitter Performance Peak RF Output Power, 250 µA TXMOD Current PO 1.5 dBm Peak Current, 250 µA TXMOD Current ITP mA OOK Turn On/Turn Off Times tON/tOFF µs ASK Output Rise/Fall Times tTR/tTF 1.1/1.1 µs 2nd - 4th Harmonic Outputs -50 dBm 5th - 10th Harmonic Outputs -55 dBm Non-harmonic Spurious Outputs -50 dBm Sleep Mode Current IS 0.7 µA Sleep to Transmit Switch Time tTOR µs Transmit to Sleep Switch Time tRTO µs Control Input Logic Low Level 200 mV Control Input Logic High Level Vcc - 300 mV Power Supply Voltage Range VCC 2.2 3.7 Vdc Operating Ambient Temperature TA -40 +85

RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 E-mail: info@rfm.com Page 2 of 6 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 http://www.rfm.com ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. TX6004-070805 Notes: 1. Do not allow the voltage applied to a control input pin to exceed Vcc + 200 mV. CAUTION: Electrostatic Device. Observe precautions when handling. Item Symbol OOK ASK ASK Units Notes Nominal NRZ Data Rate DRNOM 2.4 19.2 115.2 kbps see page 1 Minimum Signal Pulse SPMIN 416.67 52.08 8.68 µs single bit Maximum Signal Pulse SPMAX 1666.68 208.32 34.72 µs 4 bits of same value TXMOD Resistor RTXM 4.7 4.7 4.7 K ±5%, for 0 dBm output DC Bypass Capacitor CDCB 4.7 4.7 4.7 µF tantalum RF Bypass Capacitor 1 CRFB1 pF ±5% NPO RF Bypass Capacitor 2 CRFB2 100 100 100 pF ±5% NPO RF Bypass Bead LRFB Fair-Rite Fair-Rite Fair-Rite vendor 2506033017YO or equivalent Series Tuning Inductor LAT nH 50 ohm antenna Shunt Tuning/ESD Inductor LESD 100 100 100 nH 50 ohm antenna Transmitter Set-Up, 3.0 Vdc, -40 to +85 °C Modulation Input TOP VIEW GND CNT RL0 CNT RL1 P WIDTH P RATE THLD THLD RREF GND2 TX MOD RX DATA LPF ADJ CMP IN BB OUT PK DET AGC CAP VCC VCC RFIO GND1 + 3 VDC Transmitter OOK Configuration + 3 VDC R TXM C RFB2 C DCB L AT LESD C RFB1 L RFB T/S Modulation Input TOP VIEW GND CNT RL0 CNT RL1 P WIDTH P RATE THLD THLD RREF GND2 TX MOD RX DATA LPF ADJ CMP IN BB OUT PK DET AGC CAP VCC VCC RFIO GND1 + 3 VDC Transmitter ASK Configuration + 3 VDC R TXM C RFB2 C DCB L AT L ESD C RFB1 L RFB T/S

RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 E-mail: info@rfm.com Page 4 of 6 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 http://www.rfm.com ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. TX6004-070805 The transmitter RF output power is proportional to the input current to the TXMOD pin. A series resistor is used to adjust the peak transmitter output power. 1.5 dBm of output power requires about 450 µA of input current. Transmitter Mode Control The three transmitter operating modes – transmit ASK, transmit OOK, and power-down (sleep), are controlled by the Modulation & Bias Control func- tion, and are selected with the CNTRL1 and CNTRL0 control pins. Setting CNTRL1 high and CNTRL0 low place the unit in the ASK transmit mode. Setting CNTRL1 low and CNTRL0 high place the unit in the OOK transmit mode. Setting CNTRL1 and CNTRL0 both low place the unit in the power- down mode. (Note that the resistor driving TXMOD must also be low in the power-down mode to minimize power-down current.) CNTRL1 and CNTRL0 are CMOS compatible inputs. These inputs must be held at a log- ic level; they cannot be left unconnected. Turn-On Timing The maximum time required for either the OOK or ASK transmitter mode to become operational is 5 ms after the supply voltage reaches 2.2 Vdc. The total turn-on time to stable transmitter operation for a 10 ms power supply rise time is 15 ms. Sleep and Wake-Up Timing The maximum transition time from either transmit mode to the sleep mode (tTOS and tTAS) is 10 µs after CNTRL1 and CNTRL0 are both low (1 µs fall time). The maximum time required to switch from the sleep mode to either trans- mit mode (tSTO and tSTA) is 16 µs. Most of this time is due to the start-up of the transmitter oscillator. Dimension mm Inches Min Nom Max Min Nom Max A 9.881 10.033 10.135 .389 .395 .400 B 6.731 6.858 6.985 .265 .270 .275 C 1.778 1.930 2.032 .070 .076 .080 D 1.651 1.778 1.905 .065 .070 .075 E 0.381 0.508 0.635 .015 .020 .025 F 0.889 1.016 1.143 .035 .040 .045 G 3.175 3.302 3.429 .125 .130 .135 H 1.397 1.524 1.651 .055 .060 .065 C D E F G A B H SM-20H PCB Pad Layout Dimensions in inches. .09 .370 0.000 0.000 .065 .105 .145 .185 .225 .265 .305 .345 .090 .435 .1225 .1625 .1475 .1875 .220 .310 Transmitter Pin Out RFIO NC NC NC NC NC NC NC NC TXMOD NC NC NC GND1 VCC1 GND2 VCC2 GND3 CNTRL0 CNTRL1

RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 E-mail: info@rfm.com Page 5 of 6 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 http://www.rfm.com ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. TX6004-070805 Pin Descriptions Pin Name

Description

GND1 is the RF ground pin. GND2 and GND3 should be connected to GND1 by short, low-inductance traces. VCC1 VCC1 is the positive supply voltage pin for the transmitter output amplifier and the transmitter base-band circuitry. VCC1 is usually connected to the positive supply through a ferrite RF decoupling bead which is bypassed by an RF capacitor on the supply side. See the description of VCC2 (Pin 16) for additional information. NC No connection. Printed circuit board pad may be grounded or floating. NC No connection. Printed circuit board pad may be grounded or floating. NC No connection. Printed circuit board pad may be grounded or floating. NC No connection. Printed circuit board pad may be grounded or floating. NC No connection. Printed circuit board pad may be grounded or floating. TXMOD The transmitter RF output voltage is proportional to the input current to this pin. A series resistor is used to adjust the peak transmitter output voltage. 1.5 dBm of output power requires 450 µA of input current. In the ASK mode, minimum output power occurs when the modulation driver sinks about 10 µA of current from this pin. In the OOK mode, input signals less than 220 mV completely turn the transmitter oscillator off. Internally, this pin appears to be a diode in series with a small resistor. Peak transmitter output power PO for a 3 Vdc supply voltage is approximately: PO = 7*(ITXM)2, where PO is in mW, and the peak modulation current ITXM is in mA A ±5% resistor value is recommended. In the OOK mode, this pin is usually driven with a logic-level data input (unshaped data pulses). OOK modulation is practical for data pulses of 200 µs or longer. In the ASK mode, this pin accepts analog modulation (shaped or unshaped data pulses). ASK modulation is practical for data pulses 8.7 µs or longer. This pin must be low in the power-down (sleep) mode. Please refer to the ASH Transceiver Designer’s Guide for additional information on modulation techniques. NC No connection. Printed circuit board pad may be grounded or floating. GND2 GND2 is an IC ground pin. It should be connected to GND1 by a short, low inductance trace. NC No connection. Printed circuit board pad may be grounded or floating. NC No connection. Printed circuit board pad may be grounded or floating. NC No connection. Printed circuit board pad may be grounded or floating. NC No connection. Printed circuit board pad may be grounded or floating. NC No connection. Printed circuit board pad may be grounded or floating. VCC2 VCC2 is the positive supply voltage pin for the transmitter oscillator. Pin 16 must be bypassed with an RF capacitor, and must also be bypassed with a 1 to 10 µF tantalum or electrolytic capacitor. Power supply voltage ripple should be limited to 10 mV peak-to-peak. See the ASH Transceiver Designer’s Guide for additional information. CNTRL1 CNTRL1 and CNTRL0 select the transmit modes. CNTRL1 high and CNTRL0 low place the unit in the ASK transmit mode. CNTRL1 low and CNTRL0 high place the unit in the OOK transmit mode. CNTRL1 and CNTRL0 both low place the unit in the power-down (sleep) mode. CNTRL1 is a high-impedance input (CMOS compatible). An input voltage of 0 to 300 mV is interpreted as a logic low. An input voltage of Vcc - 300 mV or greater is interpreted as a logic high. An input voltage greater than Vcc + 200 mV should not be applied to this pin. A logic high requires a maximum source current of 40 µA. A logic low requires a maximum sink current of 25 µA (1 µA in sleep mode). This pin must be held at a logic level; it cannot be left unconnected. CNTRL0 CNTRL0 is used with CNTRL1 to control the operating modes of the transmitter. See the description of CNTRL1 for more information. GND3 GND3 is an IC ground pin. It should be connected to GND1 by a short, low inductance trace. RFIO RFIO is the transmitter RF output pin. This pin is connected directly to the SAW filter transducer. Antennas presenting an impedance in the range of 35 to 72 ohms resistive can be satisfactorily matched to this pin with a series matching coil and a shunt matching/ESD protection coil. Other antenna impedances can be matched using two or three components. For some impedances, two inductors and a capacitor will be required. A DC path from RFIO to ground is required for ESD pro- tection.

RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 E-mail: info@rfm.com Page 6 of 6 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 http://www.rfm.com ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. TX6004-070805 Note: Specifications subject to change without notice. 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 ITXM in mA VTXM vs ITXM 0.86 0.88 0.90 0.92 0.94 0.96 0.98 1.00 VTXM in V 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.125 0.250 0.375 0.500 0.625 0.750 0.875 1.000 2.7 V 3.5 V RF Output Power vs ITXM ITXM in mA Output Power in mW