U2740B TEMIC | Alldatasheet
Document overview
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Technical content
Features
/C0068One-chip solution with few external components /C0068Wide frequency range (200 to 500 MHz) /C0068Single voltage supply (2.2 to 5.5 V) with power-down feature /C0068Adjustable output power with differential output for loop antenna /C0068PLL lock-detect signal /C0068XTO output for µC clock /C0068ESD protection according to MIL–STD. 883 (except Pins 1, 2, 13 and 14) /C0068Low standby current <0.25 /C0109A for VS = 3 V /C0068Single lithium-cell operation
Applications
/C0068Keyless entry (automotive, domestic,...) /C0068Alarm systems /C0068Remote control /C0068Communication systems
Ordering Information
Extended Type Number Package Remarks U2740B-BFP SO16 System Block Diagram PLL Encoder M44Cx9x Power ampl. VCO XTO
1 Li cell
RF–Transmitter Antenna Figure 1. System block diagram
Figure 2. Pinning
1 OSC1 VCO tank
2 OSC2 VCO tank
3 IC Internally connected
4 LD Lock-detect (open collector)
5 GND Ground
6 FM_in FM modulation input
7 PD_out Phase detector output
8 XTAL2 FM modulation capacitor
9 XTAL1 XTAL
10 XTO_out XTO output (open collector)
11 CS Chip-select (power-up)
12 V S Supply voltage
13 ANT1 Differential output 1
14 ANT2 Differential output 2
15 PAGND Power amplifier ground
16 AM_in AM modulation input
Figure 3. Block diagram
can be used to change the load capacitance of the crystal. frequency is changed via a Varicap diode. detect output indicates that the PLL is locked. S, the circuit is in power-up mode. Figure 4. Power output stage of U2740B
Rev. A3, 24-Feb-97 Preliminary Information 4 (10) Absolute Maximum Ratings Parameters Symbol Min. Max. Unit Supply voltage Pin 12 V S –0.3 5.5 V V oltage at Pins 13 and 14 –0.3 10 V Input current AM_in Pin 16 0.75 mA Output current lock detect Pin 4 1.5 mA Output current XTO_out Pin 10 1.5 mA Junction temperature Tj 125 °C Storage temperature Tstg –55 125 °C Thermal Resistance Parameters Symbol Min. Typ. Max. Unit Junction ambient SO16 R thJA 120 K/W Operating Range All voltages are referred to GND (Pin 5) and PAGND (Pin 15), Tamb = –40 to +85/C0095C, unless otherwise specified Parameters Symbol Min. Typ. Max. Unit Supply voltage Pin 12 V S 2.4 3.0 5.5 V Supply voltage, Tamb = –20 to +85°C V S 2.2 3.0 5.5 V Minimum supply voltage, Tamb = 25°C 1.8 V Minimum supply voltage, Tamb = –20°C 2.0 V Carrier frequency 200 500 MHz
Rev. A3, 24-Feb-97 5 (10) Electrical Characteristics DC All voltages referred to GND (Pin 5), VS = 2.4 to 5.5 V , Tamb = –40 to +85°C, unless otherwise specified Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit Supply current (power-down) V 11 = 0, I16 = 0, VS = 3 V Pin 12 ISO F F 0.05 0.25 /C0109A(p ) V 11 = 0, I16 = 0, VS = 5.5 V Pin 12 IS, OFF 0.1 0.5 /C0109A Supply current V 16 = 0 V , V11 = VS IS, ON 5.0 8.0 mApp y (power-up, transmit space)V 16 = 0 V , V11 = 3 V , V S = 3 V , Tamb = 25°C, Pin 12 IS, ON 4.5 5.0 6.5 mA V 16 = 0 V , V11 = 5.5 V , V S = 5.5 V , Tamb = 25°C, Pin 12 IS, ON 4.5 5.8 7.2 mA Temperature coefficient of supply current 1) TKI 0.18 %/K Supply current (power-up, transmit mark) V 16 = 3 V , V11 = 3 V , V S = 3 V , Tamb = 25°C, Pin 12 8 11 13.5 mA Power-down voltage V 16 = 0 V Pin 11 V 11, OFF 0.4 V Power-up voltage V 16 = 0 V Pin 11 V 11, ON 1.0 V Power-up current V 11 = 3 V Pin 11 I11 ON 40 65 /C0109Ap V 11 = 5.5 V Pin 11 I11, ON 110 150 /C0109A Input current FM_in V 6 = 3 V Pin 6 I6 16 25 /C0109A Output current Lock-detect Pin 4 I4 1 Output current XTO_out Pin 10 I10 1 mA Input current AM_in 2) R16 = 0 connected to V S = 3 V , Pin 16 Tamb = 25°C Tamb = 85°C I16 0.40 0.44 0.50 0.55 0.60 0.65 mA mA Notes: 1) There are circuit parts with increasing supply current over temperature. The resulting supply current is IS(T amb ) = ISDN (1 + (Tamb – 25°C) /C0032 TKI) 2) This depends on the value of resistor R16 connected to VS. If the supply voltage is 2.0 to 3.5 V , Pin 16 can be directly connected to VS. For VS = 5 V , R16 should be 3.9 k/C0087.
Rev. A3, 24-Feb-97 Preliminary Information 6 (10) Electrical Characteristics AC All voltages referred to GND (Pin 5), VS = 2.2 to 5.5 V , Tamb = –40 to +85°C, unless otherwise specified Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit Extinction ratio V 11 = 3 V 20 /C0032 log (Iout,ON Iout,off) –40 –50 dB Output current, transmit mark, VCO = 433.92 MHz) 3) V 11 = 3 V , V16 = 0 V Pins 13 and 14iout,pp 2.9 3.5 4.2 mA Output voltage swing Difference, Pins 13 and 14v(13–14)pp 4 5 V Phase detector Output current Pin 7 IPD –1 1 mA Phase detector Output voltage swing Pin 7 vPDpp 0.2 V S–0.2 V Enable settling time 5) Pins 11, 13 and 14 Tenable 100 /C0109s Modulation bandwidth 6) Pin 6 BW FSK 50 kHz Output frequency range Pins 13 and 14fVCO 200 500 MHz XTO frequency range Pins 9 and 10 fXTO 1 6 MHz Modulation bandwidth Pin 16 BW ASK 500 kHz Notes: 3) The output peak-to-peak current is 7 times the current flowing into the AM_in Pin. The driver stage of the power amplifier is designed so that the output current is switched between Pins 13 and 14. 4) The output voltage swing at each collector is limited to 2 V due to the circuit arrangement used. The output power depends on the load impedance. If optimum load impedance of 1.1 k/C0087 is used, an output power of 5) This is the time if an external clock is delivered to Pin 9 and Pin 11 is set to VS until the circuit operates. 6) FSK bandwidth is depending on values for loop filter and VCO, see application note for design hints.
Rev. A3, 24-Feb-97 9 (10)
Package Information
10.0 9.85 8.89 0.4 1.27 1.4 0.25 0.10 5.2 4.8 3.7 3.8 6.15 5.85 0.2 16 9
Rev. A3, 24-Feb-97 Preliminary Information 10 (10) Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (ODSs). The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency (EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423