TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 D D D D D D Wide VHF/UHF Frequency Range 200 MHz to 450 MHz for World-Wide Remote Control Frequency Compatibility High Receiver Sensitivity . . . –103 dBm at 315 MHz Accepts Baseband Data Rates From 500 Hz to 10 kHz Manchester-Decoded and Raw Baseband Outputs for Easy Interface to Serial Data Decoders and Microcontrollers TRF (Tuned Radio Frequency) Design Eliminates Local Oscillator (No Emissions) and Reduces Many Government Type Approvals (Including FCC) Adjustable Internal Sampling Clock Set By External Components D D D D Internal Amplifier and Comparator for Amplification and Shaping of Low-Level Input Signals With Average-Detecting Autobias Adaptive Threshold Circuitry for Improved Sensitivity Minimum External Component Count and Surface-Mount Packaging for Extremely Small Circuit Footprint – Typically Replaces More Than 40 Components in an Equivalent Discrete Solution No Manual Alignment When Using SAW Filters Advanced Submicron BiCMOS Process Technology for Minimum Power Consumption description The TRF1400 VHF/UHF RZ ASK remote control receiver is specifically designed for RZ ASK (return-to-zero amplitude-shift keyed) communications systems operating in the 200-MHz to 450-MHz band. This device is targeted for use in automotive and home security systems, garage door openers, remote utility metering, and other low-power remote control and telemetry systems. A complete RZ ASK receiver solution on a chip, the TRF1400 requires only a minimum of external components for operation. This significantly reduces the complexity and footprint of new designs compared with current discrete receiver designs. The TRF1400 requires no manual alignment when using external SAW (surface acoustic wave) filters. For a lower-cost solution, the device is also compatible with external LC components. DW PACKAGE (TOP VIEW) LPF AGND RFIN3 AVCC AGND AVCC AGND OFFSET AGND OSCR OSCC DVCC 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 RFOUT2 LNA2T RFIN2 AGND RFOUT1 LNA1T RFIN1 AGND DOUT TRIG BBOUT DGND The TRF1400 also includes several on-chip features that normally require additional circuitry in a receiver system design. These include two low-noise front-end amplifiers, an RF amplifier/comparator for detection and shaping of input signals, and a demodulated RZ ASK baseband TTL-level output that readily interfaces to self-synchronizing devices. Also included is on-chip Manchester decoding logic that provides a specially formatted TTL data output, synchronized with a trigger output, for easy interface to any microcontroller using Manchester-encoded data. These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 1998, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 description (continued) The TRF1400 VHF/UHF RZ ASK remote control receiver is available in a 24-pin SOIC (DW) package, and is characterized for operation over the temperature range of – 40°C to 85°C. The DW package is available taped and reeled; add R suffix to device type when ordering (e.g., TRF1400DWR). functional block diagram LPF AGND RFIN3 AVCC AGND AVCC AGND OFFSET 24 1 2 LNA2 23 RFOUT2 LNA2T 3 22 21 4 5 20 Six Log-Detecting RF Amp Stages 6 LNA1 7 19 18 Summing Amp RFIN2 AGND RFOUT1 LNA1T RFIN1 8 17 AGND Auto Level AGND OSCR 9 Manchester Decoding Logic + – Comparator 10 16 15 DOUT TRIG Clock OSCC DVCC 2 14 11 12 13 SCLK POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 BBOUT DGND TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 Terminal Functions TERMINAL NAME NO. I/O DESCRIPTION AGND 2, 5, 7, 9, 17, 21 Analog ground for all internal analog circuits. AGND is not internally connected to digital ground (DGND). All analog signals are referenced to AGND. AVCC 4, 6 BBOUT 14 DGND 13 DOUT 16 DVCC 12 Positive power supply voltage for all digital circuits. DVCC is 4.5 V to 5.5 V. For best noise performance, DVCC should connect to AVCC at the power supply, not at the TRF1400 device. LNA1T 19 Low-noise amplifier (LNA) 1 ground termination. LNA1T should be connected to AGND through a parallel resistor-capacitor bias network. If left unconnected, LNA1 is disabled. LNA2T 23 Low-noise amplifier (LNA) 2 ground termination. LNA2T should be connected to AGND through a parallel resistor-capacitor bias network. If left unconnected, LNA2 is disabled. Positive power supply voltage for all analog circuits — 4.5 V to 5.5 V O Baseband data output. BBOUT is the demodulated envelope of the recovered RF signal and is active with any received ASK signal coding format. Digital ground for all internal logic circuits. DGND is not internally connected to analog ground (AGND). O Data output. Data appearing at DOUT is a binary, TTL representation of the baseband data, and is only meaningful when Manchester-encoded ASK data is received. DOUT is active high and is internally pulled down. LPF 1 Connection for external low-pass capacitor used in the average-detecting adaptive threshold circuitry. OFFSET 8 Connection for external offset resistor. A resistor (1 MΩ suggested) sets the internal threshold detector offset voltage. Lowering the value of this resistor decreases device sensitivity. OSCC 11 Internal oscillator frequency-setting capacitor. A capacitor, connected between OSCC and ground, in conjunction with a resistor connected between OSCR and OSCC, determines the speed of the internal clock oscillator (SCLK). The SCLK signal is used for processing the demodulated incoming data stream and controls the Manchester decoding and timing recovery logic sections of the device. The internal oscillator must be set to 10 times the received Manchester data rate for valid TRIG and DOUT, or to 5 times the received baseband data rate. OSCR 10 Internal oscillator frequency-setting resistor. A resistor, connected between OSCR and OSCC, in conjunction with a capacitor connected between OSCC and ground determines the speed of the internal oscillator (SCLK). The SCLK signal is used for processing the demodulated incoming data stream and controls the Manchester decoding and timing recovery logic sections of the device. The internal oscillator must be set to 10 times the received Manchester data rate for valid TRIG and DOUT, or to 5 times the received baseband data rate. RFIN1 18 I RF input to first low-noise, high-gain amplifier stage RFIN2 22 I RF input to second low-noise, high-gain amplifier stage RFIN3 3 I RF input to the detecting RF amplifier stages. Filtered RF in the form of AM RZ ASK data at frequencies between 200 MHz and 450 MHz, at a baud rate between 500 Hz and 10 kHz can be applied to RFIN3 for detection and decoding. RFOUT1 20 O RF output of the first low-noise, high-gain amplifier RFOUT2 24 O RF output of the second low-noise, high-gain amplifier. Typically, the input of an external SAW or LC filter is connected to RFOUT2. TRIG 15 O Trigger output. TRIG pulses to indicate each new received data cell and is only meaningful when Manchester-encoded ASK data is received. TRIG is active high and is internally pulled down. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, AVCC, DVCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.6 to 6 V Input voltage range, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.6 to 6 V Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 mW Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 85°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C ESD protection, all terminals: human body model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV machine model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 V JEDEC latchup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mA or 11 V † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: Voltage values are with respect to GND. recommended operating conditions MIN NOM MAX UNIT Supply voltage, VCC 4.5 5.5 V Input frequency, fin 200 450 MHz Operating free-air temperature, TA – 40 85 °C Minimum permissible AM modulation of RF envelope applied to RF Input, measured at –101 dBm 25% electrical characteristics as measured in the test circuit detailed in Figures 1 through 6 with fin = 315 MHz over recommended ranges of supply voltage and operating free-air temperature, typical values are at VCC = 5 V and TA = 25°C (unless otherwise noted) current consumption PARAMETER ICC Average supply current from VCC TYP MAX I/O pins terminated with typical loads, Signal applied with a 5-kHz baseband data rate TEST CONDITIONS MIN 2.7 3.5 I/O pins terminated with typical loads, Signal applied with a 2.5-kHz Manchester data rate 2.7 3.5 I/O pins terminated with typical loads, no data input 2.5 UNIT mA digital interface PARAMETER VOH VOL High-level output voltage Low-level output voltage TEST CONDITIONS DOUT TRIG DOUT, TRIG, BBOUT MIN IOH = 3.2 mA IOL = – 3.2 mA MAX VCC – 0.5 UNIT V 0.5 V VSWR (voltage standing-wave ratio), ripple rejection PARAMETER TEST CONDITIONS MIN TYP VSWR into 50 Ω at RFIN1, RFOUT1, RFIN2, RFOUT2, RFIN3 With external LC matching network 2:1 Ripple rejection at BBOUT while maintaining BER = 1/100 (see Note 2) 1 MHz injected at AVCC and DVCC, Carrier level = – 50 dBm 6% VCC MAX UNIT V/V NOTE 2: BER (bit error rate = errors/number of bits) is qualified by integration of logic-level pulses (> 50% high = 1, < 50% low = 0). (See the System Design Considerations Using the TRF1400 RF Telemetry Receivers Application Report, TI literature number SLWA005, for more BER information.) 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 RF sensitivity/overload PARAMETER TEST CONDITIONS MIN RF input level (average) at test board RF input required for BER 1/100 at 5 kHz baseband data rate rate, 2.5 kHz Manchester data rate (see Note 2) VCC = 5 V, TA = 25°C, fin = 315 MHz,, external SAW preselector bandpass filter (see Note 3) Overload signal level at fc with BER 1/100 at 5 kHz baseband data rate, 2.5 kHz Manchester data rate (see Note 2) VCC = 5 V, fin = 315 MHz TA = 25°C, TYP MAX UNIT – 103 – 101 dBm – 20 dBm NOTES: 2. BER (bit error rate = errors/number of bits) is qualified by integration of logic-level pulses (> 50% high = 1, < 50% low = 0). 3. The SAW bandpass filter must have a rejection level greater than or equal to 50 dB at ± 0.5 fc, an insertion loss of less than or equal to 3 dB, and a – 3 dB passband width of 0.2% fc, where fc is the passband center frequency of the SAW filter. oscillator (internal clock) PARAMETER Sample clock frequency, SCLK (5× baseband data rate, 10× Manchester data rate) MIN MAX 2.5 50 UNIT kHz ± 5% Frequency spread (process variation, temperature, VCC), not including external component tolerance timing requirements over recommended ranges of supply voltage and operating free-air temperature RF input data (see Figure 7) MIN tr tf MAX UNIT Rise time at RFIN1 0.1 tw3 µs Fall time at RFIN1 0.1 tw3 µs received data Baseband data frequency, AM RZ ASK Manchester data frequency, AM RZ ASK MIN MAX 0.5 10 kHz 0.25 5 kHz ± 8% Pulse period tolerance for synchronization, valid TRIG and DOUT data Pulse duty cycle for synchronization, valid TRIG and DOUT data tx Dead time between wakeup time and frame start time (for synchronization valid, TRIG and DOUT data) (see Figure 8) tw3 Duration, modulated RF carrier (see Figure 9) UNIT 49% 51% 38 ÷ SCLK 317 ÷ SCLK ms 100 2000 µs switching characteristics over recommended ranges of supply voltage and operating free-air temperature device latency for BBOUT, TRIG, DOUT (see Figure 9) PARAMETER MIN Delay time between power applied and output signal at BBOUT TYP MAX UNIT 10 ms 10 µs td1 Delay time between BBOUT ↑ and TRIG ↑ 2.5 ÷ SCLK µs td2 Delay time between DOUT ↑ and TRIG ↑ 0.5 ÷ SCLK µs Demodulation delay time across device (RF Input to BBOUT) RF carrier (see Figure 9) PARAMETER MIN TYP MAX UNIT tw0 tw1 Duration, logic 0 data cell 2 tw3 µs Duration, logic 1 data cell 2 tw3 µs tw2 Duration, trigger pulse 0.5 ÷ SCLK µs POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 PARAMETER MEASUREMENT INFORMATION TRF1400 electrical characteristics are measured with the device connected in the circuit shown in Figure 1. As with any RF design, the successful integration of the device into a circuit board relies heavily on the layout of the board and the quality of the external components. Figures 2 through 6 show the layout of the circuit board used to obtain the TRF1400 electrical characteristics. Table 1 lists the parts required to complete the test circuit, which demonstrates TRF1400 performance at 315 MHz. Specified component tolerances (and Q where applicable) should be observed during the selection of parts. Tables 2 through 4 give S parameters for each of the RF signal processing blocks. A complete set of Gerber photoplotter files for the circuit board can be obtained from any TI Field Sales Office. R8 RF Input DOUT Buzzer + R11 C20 C9 LED C1 C8 L1 TRIG Optional C19 L4 C2 C4 R2 R6 R1 16 15 13 TRF1400 (U1) 1 2 3 4 5 6 7 8 9 10 R3 C10 C11 11 R4 R5 C12 DVCC OSCC OSCR AGND OFFSET C17 AGND AVCC AGND AVCC RFIN3 LPF L3 AGND SAW Filter C6 14 TRIG 17 DOUT AGND 18 AGND 19 C18 RFIN1 20 LNA1T 21 RFOUT1 22 RFIN2 23 LNA2T 24 RFOUT2 L2 BBOUT R7 C3 DGND C7 BBOUT C5 12 C15 C16 R10 AVCC C13 C14 (Short) R9 Optional E1 S1 E2 H1 H2 (Jumpers) Vcc1 B1X Figure 1. TRF1400 Test Circuit for 315-MHz Operation 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 DVCC TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 PARAMETER MEASUREMENT INFORMATION NOTE A: Circuit board material is 62 mil G–10 with 1-oz copper, dielectric constant = 4.5 Figure 2. TRF1400 Test Circuit Board Layout — Top Side Figure 3. TRF1400 Test Circuit Board Layout — Bottom Side Figure 4. TRF1400 Test Circuit Board Solder Mask — Top Side POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 PARAMETER MEASUREMENT INFORMATION Figure 5. TRF1400 Test Circuit Board Solder Mask — Bottom Side Figure 6. TRF1400 Test Circuit Board Silk Screen 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 PARAMETER MEASUREMENT INFORMATION ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ Table 1. TRF1400 315-MHz Test Circuit Parts List DESIGNATORS DESCRIPTION VALUE MANUFACTURER MANUFACTURER P/N C1 Capacitor 4 pF Murata GRM40C0G040C050V C2, C3 Capacitor 22 pF Murata GRM40C0G220J050BD C4, C7 Capacitor 100 pF Murata GRM40C0G101J050BD C5 Capacitor 5 pF Murata GRM40C0G050D050BD C6 Capacitor 1.5 pF Murata GRM40C0G1R5C050BD C8 Capacitor 3 pF Murata GRM40C0G030C050BD C9 Capacitor 18 pF Murata GRM40C0G180J050BD C10 Capacitor 0.047 µF Murata GRM40X7R473K050 C11, C12, C17, C19 Capacitor 2200 pF Murata GRM40X7R222K050BD C13, C18, C20 Capacitor 0.022 µF Murata GRM40X7R223K050BL Panasonic ECS–T1AY475R C14, C16 C15 4.7 µF @ 6.3 V Capacitor, Tantalum† Murata GRM40C0G221J050BD E1 Capacitor 2-Pin Connector 3M 2340–6111–TN E2 2-Pin Connector 3M 2340–6111–TN E3 6-Pin Connector 3M 2340–6111–TN H1, H2 Header Shunts 3M 929952–10 F1 SAW Filter L1 Inductor L2 L3 220 pF, 5% RFM 1211 RFM RFM 1211 47 nH Coilcraft 0805HS470TMBC Inductor 82 nH Coilcraft 0805HS820TKBC Inductor 120 nH Coilcraft 0805HS121TKBC L4 Inductor 39 nH Coilcraft 0805HS390TMBC Johnson 142–0701–201 P1 RF SMA Connector R1 Resistor 1.2 KΩ R2 Resistor 1.2 KΩ R3 Resistor 3 MΩ R4 Resistor 130 KΩ, 1% R5 Resistor 0Ω R6, R8 Resistor 1K Ω R7 Resistor 100 Ω R9 Resistor 680 Ω R10 Resistor short R11 Resistor 330 Ω S1 Switch NKK G-12AP Vcc1 Batttery Clip Keystone 1061 B1X Battery, Lithium Panasonic CR2016 TI TRF1400 U1 3.3-V Coin Cell (2 ea.) Receiver IC TRF1400 † Tantalum capacitors are rated at 6.3 Vdc minimum. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 PARAMETER MEASUREMENT INFORMATION 90% RFIN1 10% tf tr Fall Time Rise Time Figure 7. RFIN1 Rise and Fall Times ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ Table 2. TRF1400 LNA1 S Parameters FREQ (MHz) |S11| ∠ S11 |S21| 300 0.9541 –25.6217 4.7618 304 0.9555 –25.8350 4.7299 310 0.9569 –26.7244 315 0.9474 318 0.9543 390 ∠ S21 |S12| ∠ S12 |S22| ∠ S22 105.1213 0.0042 135.6601 0.6699 –17.8126 103.9028 0.0041 82.5760 0.6722 –17.5588 4.6670 102.3880 0.0033 74.4905 0.6670 –18.0246 –26.9720 4.6271 100.8973 0.0024 108.9183 0.6760 –17.9033 –27.3058 4.6075 99.8886 0.0028 95.0878 0.6724 –17.9506 0.9391 –32.3782 3.8948 81.7216 0.0044 –108.3656 0.6911 –20.9576 418 0.9341 –34.8677 3.6575 75.8867 0.0019 165.4227 0.6965 –22.0900 434 0.9270 –35.8675 3.5286 72.4715 0.0043 113.6352 0.6991 –22.8623 NOTE 4: Input at RFIN1, output at RFOUT1, ZO = 50 Ω, Rbias = 1.2 kΩ 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 PARAMETER MEASUREMENT INFORMATION ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁ Á ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁ Table 3. TRF1400 LNA2 S Parameters FREQ (MHz) |S11| ∠ S11 |S21| 300 0.9607 –26.6188 4.8712 304 0.9655 –27.1490 310 0.9554 –27.4384 315 0.9612 318 390 ∠ S21 |S12| ∠ S12 |S22| ∠ S22 100.9061 0.0078 122.6680 0.6534 –24.4258 4.8380 99.8060 0.0057 65.9066 0.6555 –24.5020 4.7870 97.8264 0.0030 137.0205 0.6567 –25.1169 –27.8929 4.7239 96.5227 0.0014 31.2221 0.6572 –24.8942 0.9615 –28.4482 4.7065 95.5964 0.0047 109.2950 0.6571 –25.0606 0.9461 –33.8905 3.9755 76.2949 0.0054 48.3449 0.6803 –28.0870 418 0.9389 –35.8847 3.7411 69.8410 0.0041 –119.9136 0.6811 –29.5353 434 0.9406 –36.8175 3.6130 66.0262 0.0046 102.9654 0.6839 –30.4657 NOTE 5: Input at RFIN2, output at RFOUT2, ZO = 50 Ω, Rbias = 1.2 kΩ Table 4. TRF1400 RSSI S Parameters FREQ. (MHz) |S11| ∠ S11 300 0.7937 –23.6001 304 0.7895 –24.0484 310 0.7923 –24.4377 315 0.7931 –24.5069 318 0.7934 –24.8835 390 0.7851 –30.0440 418 0.7736 –31.2657 434 0.7805 –32.5896 NOTE 6: Input at RFIN3, ZO= 50 Ω POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 11 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 PARAMETER MEASUREMENT INFORMATION Manchester data format and timing The TRF1400 requires specific Manchester data formatting and timing to decode and output Manchester serial data. For the TRF1400 to output meaningful function data at the TRIG and DOUT terminals, the incoming RF signal must have the Manchester-encoded binary format and timing shown in Figure 8 (for 50-kHz SCLK). A wakeup time and frame-start time is required for the device to synchronize with the incoming data. The wakeup time is designated by a data-bit 0 and data-bit 1 sequence repeated five times. Figure 9 shows Manchester-encoded function data timing. 1 Data 0 2 1 0 3 1 0 4 1 0 Function Data Starts (see Figure 9) 5 1 0 1 0 1 0 1 0 1 0 1 0 1 RF Input tx 100 µs 200 µs SCLK = 50 kHz Wakeup Time = 200 µs 10 = 2 ms (BBOUT Active During This Time) (0.76 ms – 6.34 ms) DOUT, TRIG Active During This Time Frame Start Time (1.16 ms – 6.74ms) Figure 8. Manchester-Encoded RF Binary Data Format at RF Input Data 0 Data 1 Data 0 Data 1 Data 1 RF Input VOH BBOUT VOL td1 tw3 tw1 DOUT VOH tw0 VOL td2 VOH TRIG VOL tw2 Figure 9. Manchester-Encoded Function Data Timing Diagram 12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 PRINCIPLES OF OPERATION general The TRF1400 VHF/UHF RZ ASK remote control receiver demodulates AM RZ ASK modulated RF carriers between 200 MHz and 450 MHz with a 500-Hz to 10-kHz baseband data rate or a 250-Hz to 5-kHz Manchester data rate. A general signal flow is shown in Figure 10. RF Input LC RFOUT1 Filter RFIN2 RFOUT2 BBOUT RFIN3 LC Auto Level/ Comparator RFIN1 LNA1 LNA2 Six Log-Detecting RF Amp Stages Manchester Decoding Logic DOUT TRIG TRF1400 Figure 10. TRF1400 Signal Flow signal reception The RF signal is collected by an antenna and then passed through an external LC matching network to bandpass filter the signal and compensate for various antenna loading impedances. The signal is then input to the RFIN1 terminal of the TRF1400. signal path through device The RF signal applied to the RFIN1 terminal is amplified by LNA1 and typically passed through an external LC matching network before being applied to the input of LNA2. The combined gain of the two LNAs is 40 dB, with an input 1- dB compression point of – 80 dBm and a noise figure of 5 dB (nominal). The amplified signal is output at RFOUT2 and passed through an external preselector bandpass filter before being applied to the third stage of amplification at terminal RFIN3. The third stage of amplification consists of an amplifier with a single-ended input and differential outputs followed by six high-gain differential log-detecting amplifier stages with an equivalent gain of 60 dB (nominal), which forms a detector circuit. First, the signal is converted to a differential signal for increased noise immunity. Next, the differential signal is passed through the six high-gain differential log-detecting amplifiers. Each log-detecting amplifier is biased such that when an RF signal is present, an imbalance is caused in its bias circuit. The imbalance in each of the six stages is converted to a voltage that is then summed into a baseband envelope representation of the RF signal. This signal then passes through an autoleveling circuit before being applied to a comparator to produce the TTL-level baseband signal output that appears at BBOUT. An external low-pass filter connected to BBOUT attenuates high-frequency transients in the output signal. The demodulated signal is also applied to the Manchester decoding and timing recovery logic section of the TRF1400. The Manchester Decoding Logic section has two outputs, TRIG and DOUT, which should be externally low-pass filtered to attenuate high-frequency transients. The signals appearing at these outputs are meaningful only when the received Manchester-encoded data is formatted and timed as shown in Figure 9. When Manchester-encoded data is received and demodulated, Manchester serial data is output at DOUT and a trigger pulse is output at TRIG. The TRIG pulse rises at the start of each decoded data bit appearing at DOUT. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 13 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 PRINCIPLES OF OPERATION frequency adjustment The TRF1400 requires no manual alignment. The receive frequency is dependent only on the choice of external matching networks and preselecting filters used. In that respect, the user has only to stock a different set of external components for each frequency, and no manual alignment or end-of-line frequency programming is required. Although the combination of the TRF1400 and test circuit/demo board (Figures 1 – 6) is optimized for frequencies below 360 MHz, operation at reduced performance levels is possible at higher frequencies. external components and device performance Whereas the TRF1400 uses a minimum of external components in the typical application, the choice of those components greatly affects the performance of the device. When a SAW (surface acoustic wave) preselector is used, the selectivity (out-of-band rejection) and sensitivity of the TRF1400 are optimized as a result of the high Q of SAW devices. If an LC preselector is used, these parameters change and the overall performance of the TRF1400 is reduced, but can still meet the requirements of many end-equipment applications. An external resistor connected between OFFSET and ground adjusts the internal offset voltage of the receiver decoding section to maximize the noise rejection of the device. While a 3-MΩ resistor is suggested, this value can be changed to minimize toggling of outputs DOUT, TRIG, and BBOUT during periods of nonvalid received code. decoder interface For baseband operation, a decoder can be interfaced directly to the TRF1400 using the baseband-data output (BBOUT) of the device. For Manchester operation, a standard microcontroller decoder must know when to poll its input for data. The TRF1400 provides an output terminal (TRIG) for this purpose that pulses on each valid received data cell. In this system configuration, Manchester-encoded binary data must be used in the format described in the following paragraphs to allow the TRF1400 to synchronize properly and produce the TRIG and DOUT outputs. internal clock/synchronization An internal clock (SCLK) is used by the TRF1400 for processing the demodulated incoming data stream and for controlling the Manchester-decoding and timing-recovery logic sections of the device. The frequency of SCLK is set by an external resistor connected between the OSCR and OSCC terminals and an external capacitor connected between OSCC and ground, and is adjustable between 2.5 kHz and 50 kHz. For baseband output, SCLK is set to 5 times the received baseband data rate (500 Hz to 10 kHz). Incoming baseband data is then sampled at 5 times its transmitted data rate. TTL-level baseband data is output at BBOUT whenever the TRF1400 receives ASK-modulated data in any format. This provides compatibility with systems that use other code formatting, and whose serial data decoders do not require the DOUT or TRIG outputs from the receiver. For Manchester data output, SCLK must be set to 10 times the received Manchester-encoded data rate (250 Hz to 5 kHz) for the output signals at TRIG and DOUT to be meaningful. The high sampling rate (10×) ensures accurate correlation of the received signal. The received Manchester data rate (set by a clock on the transmitter/encoder end) can vary as much as ± 8% and TRF1400 synchronization still results. This allows for frequency drift due to external component tolerances and temperature changes on the transmitter end. At the TRF1400 end, a ± 8% frequency variation is also allowed. Thus, the total permissible frequency variation from transmitter clock to receiver clock can be as much as ±16%. For example, if a serial Manchester data rate of 1.5 kHz is used at the encoder/transmitter end, then the TRF1400 sample clock oscillator (SCLK) must be set to 10 times the transmitted data rate, or 15 kHz. SCLK is allowed to vary ± 8% in frequency, from 13.8 kHz to 16.2 kHz in this case, and the TRF1400 synchronizes successfully to the incoming data. 14 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 PRINCIPLES OF OPERATION internal clock/synchronization (continued) The data rate of the incoming data itself can also vary the same amount. It is left to the user to design the system such that the transmitter/encoder data rate drifts ± 8% or less. The TRF1400 can introduce as much as a ± 5% frequency variation due to its internal tolerances and semiconductor process variations, so the external resistor and capacitor values used with the TRF1400 can have up to a ± 3% value tolerance. The frequency of the internal clock oscillator is set by connecting a resistor between OSCR and OSCC and a capacitor between OSCC and ground. The following equation defines the oscillator frequency (SCLK speed) as a function of the external resistor and capacitor: F osc Where: + 1.386 ǒ 1 R ext Ǔ ǒ ) Rs C ext )C Ǔ p Rext is the external resistor connected between OSCR and OSCC. Rs is the internal series resistance, typically 1.9 kΩ or less. Cext is the external capacitor connected between OSCC and ground. Cp is parasitic capacitance and is dependent on board layout — typical value is 8.5 pF. For minimum current draw, large values (in the thousands of ohms) for Rext should be used. Typical Rext values and the resulting SCLK frequency when Cext = 100 pF are shown in Figure 11. 100 Cext = 100 pF f – SCLK Frequency – kHz 80 60 40 20 0 0 200 k 400 k 600 k 800 k 1M 1.2 M 1.4 M R – Resistance – Ω Figure 11. External Resistance Versus Sample Clock Frequency POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 15 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 APPLICABLE REGULATIONS Receiver design, as well as transmitter design, is regulated throughout the world. Since the TRF1400 is targeted for world-wide sales, the applicable standard for each region must be considered when the device is to be used in systems to be successfully marketed in that region. For this reason, the TRF1400 conforms to all requirements shown in Figure 12 and Table 5. The primary specifications of most of the standards address carrier frequency and spurious emissions. CANADA Dept. of Communications (DoC), Telecom Regulatory Service, Radio Standard Specifications (RSS), RSS-210, 260 – 470 MHz and 902 – 928 MHz USA Federal Communications Commission (FCC) Code of Federal Regulations 47 (CFR 47) Parts 15.35, 15.205, 15.209, and 15.231, 260–470 MHz, and Part 15.249, 902–928 MHz (see Table 5) JAPAN Ministry of Posts & Telecommunications (MPT) < 322 MHz ISRAEL Ministry of Communications, Engineering, and Licensing Div., 325 MHz SOUTH AFRICA 403.916 MHz and 411.6 MHz HONG KONG Post Office, Telecom Branch, Telecom Order 1989, Sec 39, Chap. 106, 314 MHz AUSTRALIA Dept. of Transportation and Telecommunications (DTC), and ECR60, 303.825 MHz and 318 MHz GERMANY Femmeldetechnisches Zentralamt (FTZ), FTZ 17 TR 2100, 433.92 MHz UNITED KINGDOM Dept. of Trade and Industry (DTI), MPT 1340, 418 MHz, and for automotive only: 433.92 MHz The Interim European Telecommunications Standard, I-ETS 300 220 (433.92 MHz) is proposed by the European Telecommunications Standards Institute (ETSI) for all European Community (EC) countries. Most European countries not shown currently use 433.92 MHz according to CEPT recommendations and are likely to adopt rules similar to ETSI I-ETS 300 220. FRANCE Centre National d′Etudes des T′el′ecommunications (National Telecom Research Center, CNET), Groupement Terminaux Procedures et Applications (Terminals, Procedures, and Applications Group, TPA), Specification Technique (ST), ST/PAA/TPA/AGH/1542, 223.5–225 MHz and for automotive only: 433.92 MHz Figure 12. World-Wide Receiver Regulations 16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 APPLICABLE REGULATIONS Table 5. World-Wide Regulations REGION REGULATION FREQUENCY USA Federal Communications Commission (FCC) Code of Federal Regulations 47 (CFR 47) Parts 15.35, 15.205, 15.209, 15.231, and 15.249 (see Note 7) 260 MHz – 470 MHz (Part 15.35, 15.205, 15.209) 902 MHz – 928 MHz (Part 15.249, see Note 4) Germany Femmeldetechnisches Zentralamt (FTZ), FTZ 17 TR2100 433.92 MHz France Centre National d′Etudes des T′el′ecommunications (National Telecom Research Center, CNET), Groupement Terminaux Procedures et Applications (Terminals, Procedures and Applications Group, TPA), Specification Technique (ST), ST/PAA/TPA/AGH/1542 223.5 MHz – 225 MHz (automotive only) United Kingdom Dept. of Trade and Industry (DTI), MPT 1340 418 MHz 433.92 MHz (automotive only) Japan Ministry of Posts and Telecommunications (MPT) < 322 MHz Canada Dept. of Communications (DoC), Telecom Regulatory Service, Radio Standard Specifications (RSS), RSS-210 260 MHz – 470 MHz (RSS-210) 902 MHz – 928 MHz Hong Kong Post Office, Telecom Branch, Telecom Order 1989, Sec 39, Cap. 106 314 MHz Australia Dept. of Transportation and Telecommunications (DTC), and ECR60 303.825 MHz and 318 MHz Israel Ministry of Communications, Engineering & Licensing Div. 325 MHz South Africa 403.916 MHz and 411.6 MHz NOTE 7: Although the FCC Part 15.231 allows low-power unlicensed radios in the range of 260 MHz to 470 MHz, not all frequencies in this range are desirable. This is due to emission restrictions applying to fundamentals and harmonics in various forbidden bands as defined in Parts 15.205 and 15.209. USA frequencies shown above conform to these additional restrictions and are commonly used in the USA. Under Part 15.249, transmitters may continuously radiate 50 000 µV/m at 3 meters with simple modulation. Part 15.247 permits still higher power, but must use true spread-spectrum modulation. See FCC CFR 47, Part 47, Part 15 for details. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 17 TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER SLWS014E – JUNE 1996 – REVISED APRIL 1998 MECHANICAL DATA DW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 16 PIN SHOWN 0.050 (1,27) 0.020 (0,51) 0.014 (0,35) 16 0.010 (0,25) M 9 0.419 (10,65) 0.400 (10,15) 0.010 (0,25) NOM 0.299 (7,59) 0.293 (7,45) Gage Plane 0.010 (0,25) 1 8 0°– 8° A 0.050 (1,27) 0.016 (0,40) Seating Plane 0.104 (2,65) MAX 0.012 (0,30) 0.004 (0,10) 0.004 (0,10) PINS ** 16 20 24 A MAX 0.410 (10,41) 0.510 (12,95) 0.610 (15,49) A MIN 0.400 (10,16) 0.500 (12,70) 0.600 (15,24) DIM 4040000 / D 02/98 NOTES: A. B. C. D. 18 All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0.006 (0,15). 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