T5744 ATMEL [ATMEL Corporation], T5744 Datasheet
T5744
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T5744 Summary of contents
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... Receiving Bandwidth BIF = 600 kHz Description The T5744 is a PLL receiver device for the receiving range of f 450 MHz developed for the demands of RF low-cost data communication sys- tems with low data rates and fits for most types of modulation schemes including Manchester, Biphase and most PWM protocols ...
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... XTO 15 DVCC 16 MODE 17 RSSI 18 TEST 19 ENABLE 20 DATA T5744 2 Function Baud rate select LSB Baud rate select MSB Lower cut-off frequency data filter Analog power supply Analog ground Digital ground Power supply mixer High-frequency ground LNA and mixer RF input Not connected Power supply VCO ...
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... XTO must be considered. DATA Data interface TEST Test MODE DVCC ENABLE LFGND Standby logic LFVCC XTO XTO LF . The VCO (Voltage-Controlled XTO for the mixer can be calculated using the following formula: XTO T5744 is dependent and XTO 3 ...
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... Pin LNA_IN. The input impedance of that pin is provided in the electrical parame- ters. The parasitic board inductances and capacitances also influence the input matching. The RF receiver T5744 exhibits its highest sensitivity at the best signal-to- noise ratio in the LNA. Hence, noise matching is the best choice for designing the trans- formation network ...
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... MHz and f RF Intermediate Frequency MHz MHz --------- - IF 314 ----------------- - IF 432.92 8 LNAGND T5744 LNA_IN 25n 47p C16 100p L3 = 315 MHz TOKO LL2012 47n L2 TOKO LL2012 F82NJ 1 B3551 IN 82n 2 OUT_GND IN_GND C2 CASE_GND 10p 3,4 7,8 T5744 = RF C17 22p F47NJ 5 OUT 6 5 ...
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... MHz is used. For other RF input frequencies, refer to Table 1 to determine RF the center frequency. The receiver T5744 employs an IF bandwidth of B together with the U2741B in ASK mode. The subsequent RSSI amplifier enhances the output signal of the IF amplifier before it is fed into the demodulator. The dynamic range of this amplifier is DRRSSI = 60 dB. If the RSSI amplifier is operated within its linear range, the best S/N ratio is maintained ...
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... Each BR_Range is defined by a minimum and a maximum edge-to-edge time (tee_sig). These limits are defined in the electrical characteristics. They should not be exceeded to maintain full sensitivity of the receiver. max 40°C amb min. -90.0 -70.0 -50.0 -30.0 P (dBm) Ref BR_0 BR_Range T5744 ...
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... When designing the system in terms of receiving bandwidth, the LO deviation must be considered as it also determines the IF center frequency. The total LO deviation is cal- culated to be the sum of the deviation of the crystal and the XTO deviation of the T5744. Low-cost crystals are specified to be within ±100 ppm. The XTO deviation of the T5744 is an additional deviation due to the XTO circuit. This deviation is specified to be ± ...
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... Pin ENABLE. During start-up and receiving mode, the current consumption 2.0383 µs) Clk = 2.0697 µs) Clk ). Clk = 8 ´ T Clk = 4 ´ T Clk = 2 ´ T Clk = 1 ´ T Clk = I S Son T5744 . T controls Clk Clk = 315 MHz is Send - Clk is XClk . 9 ...
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... Figure 10. Enable Timing (1) Dem_out ENABLE DATA Sleep mode Figure 11. Enable Timing (2) Dem_out ENABLE DATA Sleep mode Digital Signal Processing T5744 10 Start-up mode Soff Son T Start-up Start-up mode Soff Son T Start-up The data from the ASK demodulator (Dem_out) is digitally processed in different ways and as a result converted into the output signal DATA ...
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... Junction ambient SSO20 package 4521B–RKE–01/03 t ee_sig t DATA_min Symbol Min tot -55 stg T -40 amb P in_max Symbol R thJA R thJA T5744 t DATA_min t ee Max. Unit 6 V 450 mW 150 °C +125 °C +105 °C 10 dBm Value Unit 100 K/W 100 K/W 11 ...
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... Noise figure LNA and mixer Input matching according to (DSB) Figure 6 LNA_IN input impedance at 433.92 MHz at 315 MHz 1 dB compression point Input matched according to (LNA, mixer, IF amplifier) Figure 6, referred to RF T5744 12 = -40°C to +105° 6.76438 MHz Osc. (MODE:1) Symbol Min. Typ. Max. ...
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... Ref_ASK -107 -110 -105 -108 -103 -106 -101 -104 D P Ref +2 Ref +5.5 +7.5 SNR 10 T5744 Max. Unit -20 dBm 449 MHz -90 dBC/Hz -110 dBC/Hz -47 dBC MHz/V kHz 10 nF 6.764375 MHz +30 ppm 4.90625 MHz +30 ppm W 150 W 220 6 ...
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... Low-level input voltage Division factor = 10 - High-level input voltage Division factor = 14 BR_0 input - Low-level input voltage - High-level input voltage BR_1 input - Low-level input voltage - High-level input voltage TEST input Test input must always be set to - Low-level input voltage LOW T5744 14 Symbol DR RSSI V RSSI G RSSI 1 = ------------------------------------------------- - ´ ...
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... LFVCC C12 C8 10nF 10% 150pF 10% R1 820 5% C9 C10 4.7nF 1nF DATA 19 ENABLE 18 TEST 17 RSSI 16 MODE 15 DVCC Q1 C11 14 XTO 15pF 13 4.90625MHz LFGND np0 LFVCC C8 150pF 10% R1 820 5% C9 C10 4.7nF 1nF 5% 5% T5744 DATA ENABLE RSSI DATA ENABLE RSSI 15 ...
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... C17 10% 8,2pF 100pF 5% np0 5% np0 L3 TOKO LL2012 F27 NJ 27nH OUT 6 IN_GND OUT_GND 7 CASE_GND CASE_GND 8 CASE_GND CASE_GND B3555 = 315 MHz, witht SAW Filter T5744 C14 1 BR_0 39n BR_1 3 CDEM 4 AVCC 5 C13 AGND 6 10nF 10% DGND 7 MIXVCC 8 LNAGND 9 LNA_IN C3 47pF np0 ...
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... Ordering Information Extended Type Number T5744-TKS T5744-TKQ T5744-TGS T5744-TGQ Package Information Package SO20 Dimensions in mm 0.4 1. 4521B–RKE–01/03 Package Remarks SSO20 Tube SSO20 Taped and reeled SO20 Tube SO20 Taped and reeled 12.95 12.70 2.35 0.25 0.10 11. 9.15 8.65 7.5 7.3 0.25 10.50 10.20 technical drawings according to DIN specifications T5744 17 ...
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... Package SSO20 Dimensions in mm 0.25 0. T5744 18 6.75 6.50 1.30 0.15 0.05 5.85 11 technical drawings according to DIN specifications 10 5.7 5.3 4.5 4.3 0.15 6.6 6.3 4521B–RKE–01/03 ...
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Atmel Headquarters Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 487-2600 Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL (41) 26-426-5555 FAX (41) 26-426-5500 Asia Room 1219 Chinachem ...
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