User manual EXAR XR-2206

[. . . ] 1. 03 3 XR-2206 DC ELECTRICAL CHARACTERISTICS Test Conditions: Test Circuit of Figure 2 Vcc = 12V, TA = 25°C, C = 0. 01mF, R1 = 100kW, R2 = 10kW, R3 = 25kW Unless Otherwise Specified. S1 open for triangle, closed for sine wave. XR-2206M/P Parameters General Characteristics Single Supply Voltage Split-Supply Voltage Supply Current Oscillator Section Max. Operating Frequency Lowest Practical Frequency Frequency Accuracy Temperature Stability Frequency Sine Wave Amplitude Stability2 Supply Sensitivity Sweep Range Sweep Linearity 10:1 Sweep 1000:1 Sweep FM Distortion Recommended Timing Components Timing Capacitor: C Timing Resistors: R1 & R2 Triangle Sine Wave Triangle Amplitude Sine Wave Amplitude Max. Output Swing Output Impedance Triangle Linearity Amplitude Stability Sine Wave Distortion Without Adjustment With Adjustment 2. 5 0. 4 1. 0 2. 5 0. 5 1. 5 % % R1 = 30kW See Figure 7 and Figure 8 40 Output1 160 60 6 600 1 0. 5 80 160 60 6 600 1 0. 5 mV/kW mV/kW Vp-p W % dB For 1000:1 Sweep 0. 001 1 100 2000 0. 001 1 100 2000 mF kW 2 8 0. 1 2 8 0. 1 % % % fL = 1kHz, fH = 10kHz fL = 100Hz, fH = 100kHz +10% Deviation 0. 5 1 0. 01 +1 +10 4800 0. 01 1000:1 2000:1 0. 1 +4 +50 0. 5 1 0. 01 +2 +20 4800 0. 01 2000:1 MHz Hz % of fo C = 1000pF, R1 = 1kW C = 50mF, R1 = 2MW fo = 1/R1C 10 +5 12 26 +13 17 10 +5 14 26 +13 20 V V mA R1 10kW Min. [. . . ] Package Dissipation 1KW 22 ICC (mA) 2KW 18 10KW 14 30KW 10 8 12 16 20 24 28 VCC (V) Figure 3. Output Amplitude as a Function of the Resistor, R3, at Pin 3 Figure 4. Supply Current vs Supply Voltage, Timing, R XR-2206 10M MAXIMUM TIMING R Timing Resistor ( W ) 1M 1. 0 NORMAL RANGE 100K TYPICAL VALUE 0. 5 10K 1K MINIMUM TIMING R 10-2 10 102 104 106 Frequency (Hz) Figure 5. Normalized Output Amplitude versus DC Bias at AM Input (Pin 1) 5 5 4 3 3 2 2 1 1 0 1. 0 10 100 103 0 10 100 1K 10K 100K 1M Frequency (Hz) Timing R K(W) Figure 7. Sine Wave Distortion versus Operating Frequency with Timing Capacitors Varied. Rev. 1. 03 7 ÁÁÁÁ ÁÁÁÁ ÁÁÁ Distortion (%) Distortion (%) C = 0. 01mF Trimmed For Minimum Distortion At 30 KW 4 ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ 4V 4V 0 VCC / 2 DC Voltage At Pin 1 R=3KW VOUT =0. 5VRMS Pin 2 RL=10KW ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÁÁÁÁÁÁÁ ÎÎÎÎÎÎÎÎÎÎÎÎ ÁÁÁÁÁÁÁ ÎÎÎÎÎÎÎÎÎÎÎÎ ÁÁÁÁÁÁÁ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ Normal Output Amplitude XR-2206 3 C=0. 01mF 2 Frequency Drift (%) 1 R=200KW 0 R=10KW R=2KW R=1KW -2 R=1KW -25 0 25 50 75 100 -3 -50 IC R=1MW Sweep Input Rc + VC R IB IT Pin 7 or 8 R=1MW R=2KW R=10KW R=200KW -1 + 3V 12 Ambient Temperature (C°) Figure 9. Frequency Drift versus Temperature. VCC 1 5 C 6 9 7 8 Current Switches +1 VCO 2M R1 1K R Figure 11. And Sine Shaper 15 14 13 2 11 10 + 1mF + 10mF VCC 12 3 R3 50K XR-2206 10K S1 200 Triangle Or Sine Wave Output Square Wave Output S1 Closed For Sinewave 5. 1K 5. 1K XR-2206 VCC 1mF 4 1 5 1 F= RC C 6 9 R1 7 8 Current Switches +1 VCO 16 Mult. And Sine Shaper 15 14 13 2 11 10 + 1mF 12 3 R3 50K + 10mF VCC 5. 1K 5. 1K Symmetry Adjust 25K RB S1 Closed For Sinewave S1 RA 500 Triangle Or Sine Wave Output Square Wave Output 10K VCC 2M 1K R XR-2206 Figure 12. (R3 Determines Output Swing - See Figure 3) VCC 1mF 1 5 >2V <1V F1 F2 R1 R2 F1=1/R1C F2=1/R2C C 6 9 7 8 VCO 4 16 Mult. And Sine Shaper 15 14 13 Current Switches +1 2 11 10 12 + 1mF 3 XR-2206 200 FSK Input FSK Output R3 50K + 10mF VCC 5. 1K 5. 1K Figure 13. 1. 03 9 XR-2206 VCC 1 f+ 2 C R1 ) R2 16 VCO 1mF 4 1 5 C 6 9 R1 R2 7 8 Current Switches +1 Mult. And Sine Shaper Duty Cycle = R1 R1 ) R2 15 14 13 2 11 Sawtooth Output Pulse Output 5. 1K + 10mF VCC 10 + 12 3 R3 24K XR-2206 1mF VCC 5. 1K 5. 1K Figure 14. Circuit for Pulse and Ramp Generation. Frequency-Shift Keying The XR-2206 can be operated with two separate timing resistors, R1 and R2, connected to the timing Pin 7 and 8, respectively, as shown in Figure 13. Depending on the polarity of the logic signal at Pin 9, either one or the other of these timing resistors is activated. If Pin 9 is open-circuited or connected to a bias voltage 2V, only R1 is activated. f1 and f2, as: f1 = 1/R1C and f2 = 1/R2C For split-supply operation, the keying voltage at Pin 9 is referenced to V-. Output DC Level Control The dc level at the output (Pin 2) is approximately the same as the dc bias at Pin 3. In Figure 11, Figure 12 and Figure 13, Pin 3 is biased midway between V+ and ground, to give an output dc level of V+/2. Rev. 1. 03 10 APPLICATIONS INFORMATION Sine Wave Generation Without External Adjustment Figure 11 shows the circuit connection for generating a sinusoidal output from the XR-2206. The potentiometer, R1 at Pin 7, provides the desired frequency tuning. The maximum output swing is greater than V+/2, and the typical distortion (THD) is < 2. 5%. [. . . ] 1. 00 D 16 9 E 1 8 H C Seating Plane e B A1 L A INCHES SYMBOL A A1 B C D E e H L MIN 0. 093 0. 004 0. 013 0. 009 0. 398 0. 291 MAX 0. 104 0. 012 0. 020 0. 013 0. 413 0. 299 MILLIMETERS MIN 2. 35 0. 10 0. 33 0. 23 10. 10 7. 40 MAX 2. 65 0. 30 0. 51 0. 32 10. 50 7. 60 0. 050 BSC 0. 394 0. 016 0° 0. 419 0. 050 8° 1. 27 BSC 10. 00 0. 40 0° 10. 65 1. 27 8° Note: The control dimension is the millimeter column Rev. 1. 03 15 XR-2206 NOTICE EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a user's specific application. [. . . ]