T5744-TKS Atmel, T5744-TKS Datasheet
T5744-TKS
Specifications of T5744-TKS
Related parts for T5744-TKS
T5744-TKS Summary of contents
Page 1
... Receiving Bandwidth BIF = 600 kHz 1. 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, Bi-phase and most PWM protocols ...
Page 2
... 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 ...
Page 3
... LO /64 is equal /64 LO DATA Data interface TEST Test MODE DVCC ENABLE LFGND Standby logic LFVCC XTO XTO The VCO (Voltage-Controlled Oscillator) gen- XTO is dependent on the voltage at pin LF the phase frequency detec- XTO . determined, f can be calculated using XTO LO XTO T5744 LO 3 ...
Page 4
... LNA_IN. The input impedance of that pin is provided in the electrical parameters. The para- sitic 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 transformation network. ...
Page 5
... 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 B3551 1 IN 82n 2 C2 IN_GND OUT_GND CASE_GND 10p T5744 = 40 dB Ref = 433.92 MHz RF C17 22p F47NJ 5 OUT 6 5 ...
Page 6
... MHz is used. For other RF input frequencies, refer to RF mine the center frequency. The receiver T5744 employs an IF bandwidth of B the U2741B in ASK mode. 4.2 RSSI Amplifier The subsequent RSSI amplifier enhances the output signal of the IF amplifier before it is fed into the demodulator ...
Page 7
... RSSI Characteristics 3.0 2.8 2.6 2.4 25°C 2.2 105°C 2.0 1.8 1.6 1.4 1.2 1.0 -130.0 -110 ---------------------------------------------------- - 2 R CDEM 1 Definition of BR_Range by the Pins BR_0 and BR_1 BR_1 max 40°C amb min. -90.0 -70.0 -50.0 -30.0 P (dBm) Ref BR_0 BR_Range T5744 ...
Page 8
... 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 ±30 ppm crystal of ±100 ppm is used, the total deviation is ± ...
Page 9
... XTO ). Clk BR_Range0: BR_Range1: BR_Range2: BR_Range3: MODE L : USA(:10 Europe(:14) DVCC 15 XTO 14 Clk Send = 2.0383 µs) = 2.0697 µs) is defined by the following XClk XClk Clk XClk Clk XClk Clk XClk Clk T5744 ) is defined by XTO ). controls the fol- Clk = 315 MHz is mainly -dependent Clk 9 ...
Page 10
... Figure 5-1. Enable Timing (1) Dem_out ENABLE DATA Sleep mode Figure 5-2. Enable Timing (2) Dem_out ENABLE DATA Sleep mode T5744 10 in that case. During the sleep mode the receiver is not sensitive to a transmitter signal. Start-up mode Soff Son T Start-up Start-up mode Soff Son T ...
Page 11
... XClk Dem_out Data_out (DATA) Figure 6-2. Debouncing of the Demodulator Output Dem_out DATA t DATA_min 4521C–RKE–05/05 Figure 6-1 on page 11 illustrates how Dem_out is synchronized by the . Data can change its state only after T XClk t ee_sig t DATA_min T5744 has elapsed. The XClk T . DATA_min t DATA_min ...
Page 12
... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Supply voltage Power dissipation Junction temperature Storage temperature Ambient temperature Maximum input level, input matched Thermal Resistance Parameters Junction ambient SO20 package Junction ambient SSO20 package T5744 12 Symbol Min tot –55 ...
Page 13
... CLK 50 8350 Min. Typ. IS 190 off IS 7.1 on IIP3 –28 –73 LORF NF 7 1.0 || 1.56 LNA_IN 1.3 || 1.0 T5744 Typ. Max. Unit 1/(f /10) µs xto 1/(f /14) µs xto 8 T µs Clk 4 T µs Clk 2 T µs Clk 1 T µ ...
Page 14
... BR_Range0 (1 kBd) BR_Range1 (2 kBd) BR_Range2 (4kBd) BR_Range3 (8 kBd) Sensitivity variation for the f = 433.92 MHz/315 MHz in full operating range MHz IF compared to P ASK ° amb S T5744 14 Symbol 6, referred BER 10 = 432.92 MHz L (fm) XTO C = 6.764375 MHz (EU) = 4.90625 MHz (US) = 6.764 MHz P -3 (Manchester MHz ...
Page 15
... Typ. P Ref +5.5 +7.5 SNR RSSI V 1.0 RSSI G 20 RSSI CDEM 10 6.8 1.75 2.2 f 3.5 4.4 u 7.0 8.8 14.0 17 Pup T5744 Max. Unit –1.5 dB –1 3.0 V mV/ 2.65 kHz 5.3 kHz 10.6 kHz 21.2 kHz ...
Page 16
... DGND 7 MIXVCC LNAGND LFGND 9 5% LNA_IN 10 np0 NC LFVCC C12 150 pF C15 10 nF 10% 10% np0 C16 100 pF 5% np0 315 MHz, without SAW Filter RF T5744 1 BR_0 2 C14 BR_1 ENABLE 3 CDEM TEST MODE AVCC 5 C13 10 nF AGND 6 10% DVCC DGND 7 MIXVCC LNAGND LFGND 9 ...
Page 17
... IN_GND OUT_GND 3 7 CASE_GND CASE_GND DATA DATA 19 ENABLE 18 TEST 17 RSSI RSSI 16 MODE 6.76438 15 MHz DVCC C11 14 XTO np0 150 pF np0 10% 820 C10 4 DATA DATA 19 ENABLE 18 TEST 17 RSSI RSSI 16 MODE 4.90625 15 MHz DVCC C11 14 XTO np0 150 pF np0 10% 820 C10 4 T5744 17 ...
Page 18
... Ordering Information Extended Type Number T5744N-TKS T5744N-TKQ T5744N-TGS T5744N-TGQ 12. Package Information Package SO20 Dimensions in mm 0.4 1. T5744 18 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 ...
Page 19
... Put datasheet in a new template Figure 1-1 “System Block Diagram” on page 1 changed New heading rows at Table “Absolute Maximum Ratings” on page 12 added Table “Electrical Characteristics” on page 13 changed Table “Ordering Information” on page 18 changed T5744 5.7 5.3 4.5 4.3 0.15 6 ...
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