Wireless Components ASK Transmitter 315 MHz TDA 5101A V 0.2 Specification May 1999 Preliminary • For questions on technology, delivery and prices please contact the Infineon Technologies Offices in Germany or the Infineon Technologies Companies and Representatives worldwide: see our webpage at http://www.infineon.com ABM®, AOP®, ARCOFI®, ARCOFI®-BA, ARCOFI®-SP, DigiTape®, EPIC®-1, EPIC®-S, ELIC®, FALC®54, FALC®56, FALC®-E1, FALC®-LH, IDEC®, IOM®, IOM®-1, IOM®-2, IPAT®-2, ISAC®-P, ISAC®-S, ISAC®-S TE, ISAC®-P TE, ITAC®, IWE®, MUSAC®-A, OCTAT®-P, QUAT®-S, SICAT®, SICOFI®, SICOFI®2, SICOFI®-4, SICOFI®-4µC, SLICOFI® are registered trademarks of Infineon Technologies AG. ACE™, ASM™, ASP™, POTSWIRE™, QuadFALC™, SCOUT™ are trademarks of Infineon Technologies AG. Edition 03.99 Published by Infineon Technologies AG i. Gr., SC, Balanstraße 73, 81541 München © Infineon Technologies AG i. Gr. 12.05.99. All Rights Reserved. Attention please! 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Components used in life-support devices or systems must be expressly authorized for such purpose! Critical components1 of the Infineon Technologies AG, may only be used in life-support devices or systems2 with the express written approval of the Infineon Technologies AG. 1 A critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the failure of that lifesupport device or system, or to affect its safety or effectiveness of that device or system. 2Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain and sustain human life. If they fail, it is reasonable to assume that the health of the user may be endangered. TDA 5101A preliminary Confidential Productinfo ±0.05 0.1 A M +0.08 0.125 -0.05 C 6 max. 3 ±0.1 H 0.09 0.85 ±0.1 Package The TDA5101A is a single chip ASK transmitter for the frequency band 315 MHz. The IC offers a high level of integration and needs only a few external components. The device contains a 0.5 fully integrated PLL synthesizer and a A 0.22 high efficiency power amplifier to drive 0.08 a loop antenna. A special circuit design and an unique power amplifier design are used to save current consumption 3 and therefore to save battery live. AddiB Index Marking tionally features like a power down mode, a low power detect and a divided clock output are implemented. 0.15 max. General Description 1.1 max. Productinfo 0.42 +0.15 -0.1 ABC 4.9 0.25 M ABC ±0.1 Features Applications fully integrated frequency synthesizer ■ low supply current (typically < 7mA) ■ VCO without external components ■ voltage supply range 2.1 - 4 V ■ high efficiency power amplifier ■ power down mode ■ frequency range 315 MHz ■ low voltage sensor ■ ASK modulation ■ low external component count ■ Keyless entry systems ■ Alarm systems ■ Remote control systems ■ Communication systems ■ Ordering Information Type Ordering Code P-TSSOP-10 TDA 5101A Semiconductor Group Package Product Info Specification, May 1999 1 Table of Contents 1 Table of Contents 1-1 2 Product Description 2-1 2.1 Overview 2-2 2.2 Applications 2-2 2.3 Features 2-2 2.4 Package Outlines 2-3 3 Functional Description 3-1 3.1 Pin Configuration 3-2 3.2 Pin Definition and Function 3-3 3.3 Block diagram 3-4 3.4 Functional Blocks 3-5 4 Applications 4-1 4.1 Circuits 4-2 4.3 Bill of Materials 4-2 5 Reference 5-1 5.1 Electrical Data 5-2 5.2 Test Circuit 5-4 TDA 5101A Preliminary Confidential Semiconductor Group Table of Contents 1-2 Specification, May 1999 2 Product Description Contents of this Chapter 2.1 2.2 2.3 2.4 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 TDA 5101A Preliminary Confidential Product Description 2.1 Overview The TDA5101A is a single chip ASK transmitter for the frequency band 315 MHz. The IC offers a high level of integration and needs only a few external components. The device contains a fully integrated PLL synthesizer and a high efficiency power amplifier to drive a loop antenna. A special circuit design and an unique power amplifier design are used to save current consumption and therefore to save battery live. Additionally features like a power down mode, a low power detect and a divided clock output are implemented. 2.2 Applications ■ Keyless entry systems ■ Remote control systems ■ Alarm systems ■ Communication systems 2.3 Features Semiconductor Group ■ fully integrated frequency synthesizer ■ VCO without external components ■ high efficiency power amplifier ■ frequency range 315 MHz ■ ASK modulation ■ low supply current (typically < 7mA) ■ voltage supply range 2.1 - 4 V ■ power down mode ■ low voltage sensor ■ low external component count 2-2 Specification, May 1999 TDA 5101A Preliminary Confidential Product Description 0.5 0.1 A A 0.22 ±0.05 0.08 M 6 max. 0.42 +0.15 -0.1 ABC 4.9 3 ±0.1 C +0.08 0.125 -0.05 3 ±0.1 H 0.09 0.15 max. 0.85 ±0.1 1.1 max. 2.4 Package Outlines 0.25 M ABC B Index Marking Figure 2-1 Semiconductor Group P-TSSOP-10 2-3 Specification, May 1999 3 Functional Description Contents of this Chapter 3.1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.2 Pin Definition and Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 3.4 1 2 3 4 5 6 7 8 Functional Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 PLL Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Crystal Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Power Amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 Low Power Detect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 Power Down Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 PLL Enable Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 Transmit Enable Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 TDA 5101A Preliminary Confidential Functional Description 3.1 Pin Configuration PDWN 1 10 VS 2 9 PAOUT GND 3 8 PAGND LF 4 7 COSC DATA 5 6 CLKOUT TDA 5101A LPD Pin_config.wmf Figure 3-1 Semiconductor Group IC Pin Configuration 3-2 Specification, May 1999 TDA 5101A Preliminary Confidential Functional Description 3.2 Pin Definition and Function Table 3-1 Pin Configuration Pin No. Symbol Equivalent I/O-Schematic Function 1 PDWN 2 VS 3 GND 4 LF 5 DATA 6 CLKOUT 7 COSC Crystal oscillator input 8 PAGND Power amplifier ground 9 PAOUT Power amplifier output 10 LPD Semiconductor Group Power down mode Voltage supply Ground Loop filter Amplitude Shift Keying data input Clock output Low power detect output 3-3 Specification, May 1999 Figure 3-2 Semiconductor Group Crystall oscillator Input XTAL :4 Clock output 3-4 LF :64 VCO Power Supply VS :2 DATA INPUT Power AMP Low voltage Sensor LOW POWER DETECT OUTPUT POWER AMPLIFIER Output PAGND Confidential LOOP FILTER PD POWER DOWN MODE TDA 5101A Preliminary Functional Description 3.3 Block diagram Block_diagram.wmf Main Block Diagram Specification, May 1999 TDA 5101A Preliminary Confidential Functional Description 3.4 Functional Blocks 1. PLL Synthesizer The Phase Locked Loop synthesizer consists of a voltage controlled oscillator (VCO), an asynchronous divider chain, a phase detector, a charge pump and a loop filter and is fully implemented on chip. The tuning circuit of the VCO consisting of spiral inductors and varactor diodes is on chip, too. Therefore no additional external components are necessary. The nominal center frequency of the VCO is 630 MHz. The oscillator signal is fed both to the synthesizer divider chain and to the power amplifier. The overall division ratio of the asyncronous divider chain is 64. The phase detector is a Typ IV PD with charge pump. The passive loop filter is realized on chip. 2. Crystal Oscillator The crystal oscillator operates at a frequency of 9.84 MHz. It achieves a turn on time of typically less than 1ms. To attend this, a NIC oscillator type is implemented in the TDA 5101A. The oscillator type has the property, that the input impedance is a negative resistance in series to an inductance. Therefore the load capacitance of the crystal CL (specified by the crystal supplier) is transformed to the capacitance Cv. -R I f, CL Cv TDA 5101A 1 Cv = -----------------------1 -------- + ω 2 l CL CL: ω: l: crystal load capacitance for nominal frequency angular frequency inductivity of the crystal oscillator (typically 11µH) The crystal oscillator signal is divided in the frequency by 4 and guided to the open collector output CLKOUT to drive the clock input of a micro controller. Semiconductor Group 3-5 Specification, May 1999 TDA 5101A Preliminary Confidential Functional Description An external pull up resistor (RL) is to connect between this pin and the supply voltage. The value of RL is dependent on the clock frequency and the load capacitance CLD (PCB board plus input capacitance of the microcontroller). RL can be calculated to : 1 1 R L = ------------------------------------------------- = ------------------------------------2 × f CLKOUT × C LD 20 × 10 6 × C LD Remark: Because to the reason of a low current consumption an a low spurious radiation the largest possible RL should be choosen. 3. Power Amplifier In ASK transmission the power amplifier can be switched on with pin 5 (DTA). In this case the same pin is used as the data input. The PAOUT pin is an open collector output and requires an external pull up coil to provide bias. The coil is part of the tuning and matching LC cuircit to get best performance with the external loop antenna. To achieve the best power amplifier efficiency the high frequency voltage swing at the PAOUT pin should be two times the supply voltage. The power amplifier has its own ground pin (PAGND) in order to reduce the amount of coupling to the other circuit blocks. 4. Low Power Detect The supply voltage is sensed by a low power detector. If the supply voltage drops below 2.15 V, the LPD pin (pin10) switches to low. The minimum sink current is 1 mA. To spare at most cases the external pull up resistor, an internal pull up current of 30µA is implemented. A simple application of this feature is the switching off of the power amplifier via pin 5. 5. Power Modes The IC provides three power modes, the POWER DOWN MODE, the PLL ENABLE MODE and the TRANSMIT MODE. How to get in this modes is described in the table below. Table 3-2 Semiconductor Group PDWN DTA L L POWER DOWN MODE H L PLL ENABLE MODE H H TRANSMIT MODE 3-6 Specification, May 1999 TDA 5101A Preliminary Confidential Functional Description 6. Power Down Mode In the POWER DOWN MODE the current consumption is less than 100nA. To switch the IC in this mode, the input pin PDWN (pin1) has to be in the low state. 7. PLL Enable Mode The turn on time of the circuit is determined by the turn on time of the crystal oscillator and is typically less than 1 msec (dependent on the crystal itself). To save current consumption and to avoid undesired power radiation during this time, the power amplifier is turned off. The current consumption at this mode is typically 3.5 mA. 8. Transmit Enable Mode In the TRANSMIT ENABLE MODE the power amplifier is turned on too, and the current consumption of the IC is about 7 mA. To get in this state, the DTA input is to switch to a high level. Semiconductor Group 3-7 Specification, May 1999 4 Applications Contents of this Chapter 4.1 Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 4.2 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 TDA 5101A Preliminary Confidential Applications 4.1 Circuits CR2032 +VCC ON ANT +VCC C1 R1 Data in 1 10 2 9 3 TDA5101A 8 4 7 5 6 L1 C4 R2 C2 +VCC C3 clock output C5 9,84 MHz CL C6 Application_Circuit.wmf Figure 4-1 Application Circuit 4.2 Bill of Materials Table 4-1 315 Mhz Part Value 1) 4.7 k 1k 47 nF 18 pF 330 pF 10 pF 1 nF 15 pF 39 nH R1 R2 C1 C22) C3 C42) C51 C63) L12) Semiconductor Group COG, ± 0.1 pF COG, ± 0.1 pF 1) Dependent on the data rate. 2) Dependent on the antenna and the PCB layout. 3) The value depends on the used crystal and its nominal load capacitance (CL) 4-2 Specification, May 1999 5 Reference Contents of this Chapter 5.1 Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 5.1.1 Absolute Maximum Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 5.1.2 Operating Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 5.2 Test Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 TDA 5101A Preliminary Confidential Reference 5.1 Electrical Data 5.1.1 Absolute Maximum Range The AC / DC characteristic limits are not guaranteed. The maximal ratings may not be exceeded under any circumstances, not even momentary and individual, as permanent damage to the IC will result. Table 5-1 Symbol Parameter Limit Values Min Max Unit Junction Temperature TJ -40 150 °C Storage Temperature Ts -40 125 °C tbd. K/W +1 kV Thermal Resistance RthSA ESD integrity, all pins VESD -1 Remarks 100pF, 1500 Ω Ambient Temperature under bias: TA=-25 to +85°C 5.1.2 Operating Ratings Within the operational range the IC operates as described in the circuit description. The AC / DC characteristic limits are not guaranteed Table 5-2 Parameter Symbol Limit Values Min Max Unit Supply voltage VS 2.1 4.0 V Ambient temperature TA -25 85 °C Semiconductor Group 5-2 Test Conditions Specification, May 1999 TDA 5101A Preliminary Confidential Reference 5.1.3 AC/DC Characteristics Table 5-3 Supply VoltageVS = 3V, Ambient temperatureTamb = 25 °C Parameter Symbol Limit Values Min Typ Unit Test Conditions Max Current consumption Stand by mode IS PDWN PLL enable IS PLL_EN Transmit enable IS TRANSM 100 nA 3.3 4 mA 7 9 mA Pins 5=0V or N.C. see Test circuit Power Down Modeswitch Stand by mode V PDWN 0 0.2 V PLL enable V PDWN 1.5 Vs V V DTA < 0.5V Transmit enable V PDWN 1.5 Vs V V DTA > 1.4V Input bias current PDWN IPDWN 30 µΑ V s = 4V Low Power Detect Internal pull up current I LPD1 -30 µΑ V s = 2.25 ... 4V Input current low voltage I LPD2 1 mA V s = 1.9 ... 2.05V VCO tuning voltage V LF Vs-1.6 Vs-0.6 V PLL locked ASK Transmit disable VDTA 0 0.5 V PLLEN-MODE ASK Transmit enable VDTA 1.5 Vs V PLLEN-MODE Input bias current DTA IDTA 30 µΑ VDTA =Vs Input bias current DTA IDTA µΑ VKDTA = 0V ASK data rate fDTA ASK Modulation -20 20 kHz CLOCK driver output Output current ICLKOUT 1 mA Crystal oscillator input Load capacitance CCOSC- 5 pF max Serioues Resistance of the crystal 100 Input inductance of the COSC pin 11 Ohm f=9.84 MHz µH f=9.84 MHz dBm f=315 MHz Power amplifier output, transformed to 50 Ohm (see test circuit) Output Power Semiconductor Group PPAOUT 5 5-3 Specification, May 1999 TDA 5101A Preliminary Confidential Reference 5.2 Test Circuit 50 Ohms PAOUT C8 VLPD VCLKOUT C2 L2 ILPD Cv C4 ICLKOUT L1 VS 6 7 8 9 10 C3 IPDWN 5 4 3 2 1 TDA5101A ISPDWN ISPLLEN ISTRANSM VPDWN VS IDTA VLF VDTA Test_circuit.wmf Figure 5-1 Test_Circuit Table 5-4 Transforming schematic to 50 Ohms f=315 MHz Semiconductor Group L1 220 nH L2 56 nH C2 56 pF C3 5.6 pF C4 330 pF C8 22 pF 5-4 Specification, May 1999