ML13055_08 LANSDALE

Document overview

  • Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 9

Technical content

retained, as has the versatile data slicer/comparator.

  • Input Sensitivity 20 µV @ 40 MHz
  • Signal Strength Indicator Linear Over 3 Decades
  • Easy Application, Few Peripheral Components
  • Operating Temperature Range TA = –40° to +85°C

Figure 1. Block Diagram and Application Circuit number prefix change from ML to MLE.

ML13055 LANSDALE Semiconductor, Inc. MAXIMUM RATINGS Rating Symbol Value Unit Power Supply Voltage VCC(max) 15 Vdc Operating Supply Voltage Range V2, V4 3.0 to 12 Vdc Junction Temperature TJ 150 ° C Operating Ambient Temperature Range TA -40 to +85 ° C Storage Temperature Range Tstg -65 to +150 ° C Power Dissipation, Package Rating PD 1.25 W ELECTRICAL CHARACTERISTICS (VCC = 5.0 Vdc, fo = 40 MHz, fmod = 1.0 MHz, ∆f = ±1.0 MHz, TA = 25° C, test circuit of Figure 2.) Characteristic Conditions Min Typ Max Unit Total Drain Current 20 25 mA Data Comparator Pull–Down Current I16 10 mA Meter Drive Slope versus Input I12 4.5 7.0 9.0 µA/dB Carrier Detect Pull–Down Current I13 1.3 mA Carrier Detect Pull–Up Current I13 500 µA Carrier Detect Threshold Voltage V12 690 800 1010 mV DC Output Current I10, I11 430 µA Recovered Signal V10 - V1 1 350 mVrms Sensitivity for 20 dB S+N/N, BW = 5.0 MHz VIN 20 µVrms S+N/N at Vin = 50 µV V10 - V1 1 30 dB Input Impedance @ 40 MHz Rin Cin Pin 5, Ground 4.2 4.5 kΩ pF Quadrature Coil Loading Rin Cin Pin 9 to 8 7.6 5.2 kΩ pF www.lansdale.comPage 2 of 9 I2 + I4 Issue B

Figure 2. Test Circuit

ML13055 LANSDALE Semiconductor, Inc. Legacy Information www.lansdale.comPage 6 of 9 Issue B

ML13055 LANSDALE Semiconductor, Inc. GENERAL DESCRIPTION The ML13055 is an extended frequency range FM IF , quadrature detector, signal strength detector and data shaper. It is intended primarily for FSK data systems. The design is very similar to ML3356 except that the oscillator/mixer has been removed, and the frequency capability of the IF has been raised about 2:1. The detector output configuration has been changed to a balanced, open-collector type to permit symmetrical drive of the data shaper (comparator). Meter drive and squelch features have been retained. The limiting IF is a high frequency type, capable of being operated up to 100 MHz. It is expected to be used at 40 MHz in most cases. The quadrature detector is internally coupled to the IF , and a 2.0 pF quadrature capacitor is internally provided. The 20 dB quieting sen- sitivity is approximately 20 µ V , tuned input, and the IF can accept signals up to 220 mVrms without distortion or change of detector quiescent DC level. The IF is unusual in that each of the last 5 stages of the 6 stage limiter contains a signal strength sensitive, cur- rent sinking device. These are parallel connected and buffered to produce a signal strength meter drive which is fairly linear for IF input signals of 20 µ V to 20 mVrms (see Figure 4). A simple squelch arrangement is provided whereby the meter current flowing through the meter load resistance flips a comparator at about 0.8 Vdc above ground. The signal strength at which this occurs can be adjusted by changing the meter load resistor. The comparator (+) input and output are available to permit control of hys- teresis. Good positive action can be obtained for IF input signals of above 20 µVrms. A resistor (R) from Pin 13 to Pin 12 will provide VCC/R of feedback cur- rent. This current can be correlated to an amount of sig- nal strength hysteresis by using Figure 4. The squelch is internally connected to the data shaper. Squelch causes the data shaper to produce a high (VCC) output. The data shaper is a complete “floating” comparator, with diodes across its inputs. The outputs of the quadra- ture detector can be fed directly to either or preferably both inputs of the comparator to produce a squared out- put swinging from VCC to ground in inverted or nonin- verted form. www.lansdale.comPage 8 of 9 Issue B

LANSDALE Semiconductor, Inc. ML13055 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. -A- B F C S H G D J L M 16 PL SEATING 916 K PLANE-T- MAM0.25 (0.010) T DIM MIN MAX MIN MAX MILLIMETERSINCHES A 0.740 0.770 18.80 19.55 B 0.250 0.270 6.35 6.85 C 0.145 0.175 3.69 4.44 D 0.015 0.021 0.39 0.53 F 0.040 0.70 1.02 1.77 G 0.100 BSC 2.54 BSC H 0.050 BSC 1.27 BSC J 0.008 0.015 0.21 0.38 K 0.110 0.130 2.80 3.30 L 0.295 0.305 7.50 7.74 M 0° 10° 0 ° 10° S 0.020 0.040 0.51 1.01 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOW ABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 16 9 SEATING PLANE F JM R X 45° G

8 PLP-B-

-A- M0.25 (0.010) B S -T- D K C 16 PL SBM0.25 (0.010) A ST DIM MIN MAX MIN MAX INCHESMILLIMETERS A 9.80 10.00 0.386 0.393 B 3.80 4.00 0.150 0.157 C 1.35 1.75 0.054 0.068 D 0.35 0.49 0.014 0.019 F 0.40 1.25 0.016 0.049 G 1.27 BSC 0.050 BSC J 0.19 0.25 0.008 0.009 K 0.10 0.25 0.004 0.009 M 0° 7° 0° 7° P 5.80 6.20 0.229 0.244 R 0.25 0.50 0.010 0.019 P-DIP 16 OUTLINE DIMENSION PLASTIC PACKAGE (ML13055EP) CASE 648-08 ISSUE R SO 16 PLASTIC PACKAGE (ML13055-5P) CASE 751B-05 (SO-16) ISSUE J Lansdale Semiconductor reserves the right to make changes without further notice to any products herein to improve reliabili- ty, function or design. Lansdale does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. “Typical” parameters which may be provided in Lansdale data sheets and/or specifications can vary in different applications, and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by the customer’s technical experts. Lansdale Semiconductor is a registered trademark of Lansdale Semiconductor, Inc. www.lansdale.comPage 9 of 9 Issue B