ATR4251-TKSY

Features • • • • • • • • High Dynamic Range for AM and FM Integrated AGC for AM and FM High Intercept Point 3rd Order for FM FM Amplifier Adjustable to Various Cable Impedances High Intercept Point 2nd and 3rd Order for AM Low Noise Output Voltage Low Power Consumption Low Output Impedance AM 1. Description The ATR4251 is an integrated low-noise AM/FM antenna amplifier with integrated AGC in BiCMOS2S technology. The device is designed in particular for car applications, and is suitable for windshield and roof antennas. Figure 1-1. Block Diagram QFN24 Package VREF1 24 Low-noise, High-dynamicrange AM/FM Antenna Amplifier IC ATR4251 FM IN 23 FM FM GAIN GND2 OUT 22 21 20 AGC IN Paddle = GND 19 NC* GND AGC1 AGC2 VREF2 AMIN 1 FM amplifier BAND GAP AGC 18 NC* VS AGCCONST VREF4 AMOUT1 GND1 2 17 3 16 4 15 5 AM 14 6 7 8 AGC (AM) 9 10 11 12 13 T NC* NC* CREG AGC AGC AMIN AM CONST * Pin must not be connected to any other pin or supply chain except GND. 4913J–AUDR–10/09 Figure 1-2. Block Diagram SSO20 Package FMGAIN FMIN VREF1 GND AGC1 AGC2 VREF2 AMIN1 CREG 1 2 3 4 5 6 7 8 9 AM AGC (AM) SSO20 Band gap AGC FM amplifier 20 GND2 19 FMOUT 18 AGCIN 17 VS 16 AGCCONST 15 VREF4 14 AMOUT1 13 GND1 12 TCONST 11 AGCAM AGCAMIN 10 2 ATR4251 4913J–AUDR–10/09 ATR4251 2. Pin Configuration Figure 2-1. Pinning QFN24 VREF1 FMIN FMGAIN GND2 FMOUT AGCIN NC GND AGC1 AGC2 VREF2 AMIN 1 2 3 4 5 6 78 24 23 22 21 20 19 18 17 16 15 14 13 9 10 11 12 NC VS AGCCONST VREF4 AMOUT1 GND1 Table 2-1. Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Paddle Pin Description QFN24 Symbol NC GND AGC1 AGC2 VREF2 AMIN NC CREG AGCAMIN AGCAM TCONST NC GND1 AMOUT1 VREF4 AGCCONST VS NC AGCIN FMOUT GND2 FMGAIN FMIN VREF1 GND Function Pin must not be connected to any other pin or supply chain except GND. Ground FM AGC output for pin diode AGC output for pin diode Reference voltage for pin diode AM input, impedance matching Pin must not be connected to any other pin or supply chain except GND. AM - AGC time constant capacitance 2 AM - AGC input AM - AGC output for pin diode AM - AGC - time constant capacitance 1 Pin must not be connected to any other pin or supply chain except GND. Ground AM AM output, impedance matching Bandgap FM AGC time constant Supply voltage Pin must not be connected to any other pin or supply chain except GND. FM AGC input FM output Ground FM gain adjustment FM input Reference voltage 2.7V Ground Paddle NC CREG AGCAMIN AGCAM TCONST NC 3 4913J–AUDR–10/09 Figure 2-2. Pinning SSO20 FMGAIN FMIN VREF1 GND AGC1 AGC2 VREF2 AMIN1 CREG AGCAMIN 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 GND2 FMOUT AGCIN VS AGCCONST VREF4 AMOUT1 GND1 TCONST AGCAM Table 2-2. Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pin Description SSO20 Symbol FMGAIN FMIN VREF1 GND AGC1 AGC2 VREF2 AMIN1 CREG AGCAMIN AGCAM TCONST GND1 AMOUT1 VREF4 AGCCONST VS AGCIN FMOUT GND2 Function FM gain adjustment FM input Reference voltage 2.7V FM ground AGC output for PIN diode AGC output for PIN diode Reference voltage for PIN diode AM input, impedance matching AM AGC constant capacitance 2 AM input, AM AGC AM AGC output for PIN diode AM AGC constant capacitance 1 AM ground AM output, impedance matching Band gap 6V FM AGC constant Supply voltage FM AGC input FM output FM ground 4 ATR4251 4913J–AUDR–10/09 ATR4251 3. Functional Description The ATR4251 is an integrated AM/FM antenna impedance matching circuit. It compensates cable losses between the antenna (for example windshield, roof, or bumper antennas) and the car radio which is usually placed far away from the antenna. AM refers to the long wave (LW), medium wave (MW) and short wave (SW) frequency bands (150 kHz to 30 MHz) that are usually used for AM transmission, and FM means any of the frequency bands used world-wide for FM radio broadcast (70 MHz to 110 MHz). Two separate amplifiers are used for AM and FM due to the different operating frequencies and requirements in the AM and FM band. This allows the use of separate antennas (for example, windshield antennas) for AM and FM. Of course, both amplifiers can also be connected to one antenna (for example, the roof antenna). Both amplifiers have automatic gain control (AGC) circuits in order to avoid overdriving the amplifiers under large-signal conditions. The two separate AGC circuits prevent strong AM signals from blocking FM stations, and vice versa. 3.1 AM Amplifier Due to the long wavelength in AM bands, the antennas used for AM reception in automotive applications must be short compared to the wavelength. Therefore these antennas do not provide 50 Ω output impedance, but have an output impedance of some pF. If these (passive) antennas are connected to the car radio by a long cable, the capacitive load of this cable (some 100 pF) dramatically reduces the signal level at the tuner input. In order to overcome this problem, ATR4251 provides an AM buffer amplifier with low input capacitance (less than 2.5 pF) and low output impedance (5Ω). The low input capacitance of the amplifier reduces the capacitive load at the antenna, and the low impedance output driver is able to drive the capacitive load of the cable. The voltage gain of the amplifier is close to 1 (0 dB), but the insertion gain that is achieved when the buffer amplifier is inserted between antenna output and cable may be much higher (35 dB). The actual value depends, of course, on antenna and cable impedance. The input of the amplifier is connected by an external 4.7 MΩ resistor to the bias voltage (pin 7, SSO20) in order to achieve high input impedance and low noise voltage. AM tuners in car radios usually use PIN diode attenuators at their input. These PIN diode attenuators attenuate the signal by reducing the input impedance of the tuner. Therefore, a series resistor is used at the AM amplifier output in the standard application. This series resistor guarantees a well-defined source impedance for the radio tuner and protects the output of the AM amplifier from short circuit by the PIN diode attenuator in the car radio. 5 4913J–AUDR–10/09 3.2 AM AGC The IC is equipped with an AM AGC capability to prevent overdriving of the amplifier in case the amplifier operates near strong antenna signal level, for example, transmitters. The AM amplifier output AMOUT1 is applied to a resistive voltage divider. This divided signal is applied to the AGC level detector input pin AGCAMIN. The rectified signal is compared against an internal reference. The threshold of the AGC can be adjusted by adjusting the divider ratio of the external voltage divider. If the threshold is reached, pin AGCAM opens an external transistor which controls PIN diode currents and limits the antenna signal and thereby prevents overdriving the AM amplifier IC. 3.3 FM Amplifier The FM amplifier is realized with a single NPN transistor. This allows use of an amplifier configuration optimized on the requirements. For low-cost applications, the common emitter configuration provides good performance at reasonable bills of materials (BOM) cost(1). For high-end applications, common base configuration with lossless transformer feedback provides a high IP3 and a low noise figure at reasonable current consumption(2). In both configurations, gain, input, and output impedance can be adjusted by modification of external components. The temperature compensated bias voltage (VREF1) for the base of the NPN transistor is derived from an integrated band gap reference. The bias current of the FM amplifier is defined by an external resistor. Notes: 1. See test circuit (Figure 8-1 on page 11) 2. See application circuit (Figure 9-1 on page 12) 3.4 FM/TV AGC The IC is equipped with an AGC capability to prevent overdriving the amplifier in cases when the amplifier is operated with strong antenna signals (for example, near transmitters). It is possible to realize an external TV antenna amplifier with integrated AGC and external RF transistor. The bandwidth of the integrated AGC circuit is 900 MHz. FM amplifier output FMOUT is connected to a capacitive voltage divider and the divided signal is applied to the AGC level detector at pin AGCIN. This level detector input is optimized for low distortion. The rectified signal is compared against an internal reference. The threshold of the AGC can be adjusted by adjusting the divider ratio of the external voltage divider. If the threshold is reached, pin AGC1 opens an external transistor which controls the PIN diode current, this limits the amplifier input signal level and prevents overdriving the FM amplifier. 6 ATR4251 4913J–AUDR–10/09 ATR4251 4. Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Reference point is ground (pins 4 and 13 for SSO20 and pins 2, 13, 21 and Paddle for QFN24 package). Parameters Supply voltage Power dissipation, Ptot at Tamb = 90°C Junction temperature Ambient temperature SSO20 package Ambient temperature QFN24 package Storage temperature ESD HMB ESD MM Symbol VS Ptot Tj Tamb Tamb Tstg All pins All pins Value 12 550 150 –40 to +90 –40 to +105 –50 to +150 ±2000 ±200 Unit V mW °C °C °C °C V V 5. Thermal Resistance Parameters Junction ambient, soldered on PCB, dependent on PCB Layout for SSO 20 package Junction ambient, soldered on PCB, dependent on PCB Layout for QFN package Symbol RthJA RthJA Value 92 40 Unit K/W K/W 6. Operating Range Parameters Supply voltage Ambient temperature SSO20 package Ambient temperature QFN 24 package Symbol VS Tamb Tamb Min. 8 –40 –40 Typ. 10 Max. 11 +90 +105 Unit V °C °C 7 4913J–AUDR–10/09 7. Electrical Characteristics See Test Circuit, Figure 8-1 on page 11; VS = 10V, Tamb = 25°C, unless otherwise specified. Pin numbers in () are referred to the QFN package. No. 1.1 1.2 1.3 1.4 2 2.1 2.2 2.3 2.4 Parameters Supply currents Reference voltage 1 output Reference voltage 2 output Reference voltage 4 output Input capacitance Input leakage current Output resistance Voltage gain f = 1 MHz Pin 14 (14), R78 = 4.7 MΩ, B = 9 kHz, CANT = 30 pF 150 kHz 200 kHz 500 kHz 1 MHz Vs = 10V, 50Ω load, fAMIN = 1 MHz, input voltage = 120 dBµV Vs = 10V, 50Ω load, fAMIN = 1 MHz, input voltage = 120 dBµV Ivref4 = 3 mA Ivref1 = 1 mA Test Conditions Pin 17 (17) 3 (24) 7 (5) 15 (15) Symbol IS VRef1 VRef2 VRef4 Min. 11 2.65 0.38 VS 6.0 Typ. 14 2.8 0.4 VS 6.25 Max. 17 2.95 0.42 VS 6.5 Unit mA V V V Type* A A B A AM Impedance Matching 150 kHz to 30 MHz (The Frequency Response from Pin 8 to Pin 14) f = 1 MHz Tamb = 85°C 8 (6) 8 (6) 14 (14) 8/14 (6/14) ROUT A 4 0.94 5 0.97 CAMIN 2.2 2.45 2.7 40 8 1 pF nA Ω D C D A 2.5 Output noise voltage (rms value) 14 VN1 VN2 VN3 VN4 –8 –9 –11 –12 –60 –6 –7 –9 –10 –58 dBµV dBµV dBµV dBµV dBc C 2.6 2nd harmonic AMOUT1 C 2.7 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3rd harmonic AM AGC Input resistance Input capacitance AGC input voltage threshold 3 dB corner frequency AMOUT1 –53 –50 dBc C 10 (9) f = 1 MHz f = 1 MHz AGC threshold increased by 3 dB 10/11 (9/10) 10/11 (9/10) 10/11 (9/10) 12 (11) 10 (9) 10 (9) RAGCAMIN CAGCAMIN VAMth 40 2.6 75 10 50 3.2 77 3.8 79 kΩ pF dBµV MHz D D B D A A C A Minimal AGCAM output ViHF = 90 dBµV at pin voltage 10 (9) Maximal AGCAM output ViHF = 0V at pin 10 (9) voltage Maximal AGCAM output ViHF = 0V at pin 10 (9) voltage(1) T = +85°C Maximum AGC sink current ViHF = 0V at pin 10 (9) U (pin 12 (11)) = 2V VAGC VAGC VAGC IAMsink VS – 2.4 VS – 0.2 VS – 0.4 –150 VS – 2.1 VS – 0.1 VS – 0.3 –120 VS – 1.7 V V V –90 µA *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Notes: 1. Leakage current of PIN diode can be adjusted by an external resistor between pin 11 and VS 2. Demo board measurements (see Figure 8-1 on page 11 “Common Emitter Configuration”) 3. Demo board measurements (see Figure 9-1 on page 12 “Common Base Configuration”) 8 ATR4251 4913J–AUDR–10/09 ATR4251 7. Electrical Characteristics (Continued) See Test Circuit, Figure 8-1 on page 11; VS = 10V, Tamb = 25°C, unless otherwise specified. Pin numbers in () are referred to the QFN package. No. 3.9 Parameters Transconductance of Level detector IP3 at level detector input PIN diode current generation Output resistance FM Amplifier Emitter voltage Emitter voltage Supply current limit Maximum output voltage Input resistance Output resistance Power gain(2) Output noise voltage (emitter circuit)(2) OIP3 (emitter circuit)(2) Gain (3) (3) Test Conditions ViHF = VAMth at pin 10 (9) Figure 9-2 on page 13, 1 MHz and 1,1MHz, 120 dBµV d(20 log IPin-diode) / dUPin12 T = 25°C, UPin12 = 2V Pin 10/12 (9/11) Symbol I AM sin k ------------------V AMth Min. Typ. 20 Max. Unit µA ---------------mV rms dBµV Type* C 3.10 10 (9) 150 170 D 3.11 3.12 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 5 5.1 5.2 5.3 5.4 5.5 5.6 Notes: 30 9 (8) 1 (22) ROUT 27 1.85 1.8 I19 12 RFMIN RFMOUT G VN IIP3 50 50 5 –5.1 140 6 2.8 35 1.95 2.0 45 2.05 2.2 37 dB/V kΩ V V mA Vpp Ω Ω dB dBµV dBµV dB dB dBµV D D A C D D D D A D C C C C T = –40°C to +85°C Rε = 56Ω VS = 10V f = 100 MHz f = 100 MHz f = 100 MHz f = 100 MHz, B = 120 kHz f = 98 + 99 MHz 1 (22) 19 (20) 19 (20) 2 (23) 19 (20) FMOUT/ FMIN 19 (20) 19 (20) Noise figure OIP3(3) FM AGC f = 98 + 99 MHz 148 Parameters Dependent of External Components in Application Circuit: RFMIN, RFMOUT, G, VN, IIP3 f = 100 MHz f = 900 MHz AGC1 active, Vpin16 (16) = 5V AGC1 inactive, Vpin16 (16) = 1.7V AGC2 active, Vpin16 (16) = 1.7V AGC2 inactive, Vpin16 (16) = 5V Vth1,100 Vthl,900 VAGC VAGC VAGC VAGC RPin18 81 81 83 85 85 87 dBµV dBµV V V V V 25 kΩ B B C C C C D AGC threshold AGC1 output voltage AGC1 output voltage AGC2 output voltage AGC2 output voltage Input resistance 18 (19) 5 (24) 5 (24) 6 (4) 6 (4) 18 (19) VS – 2.1V VS – 1.9V VS – 1.7V VS – 0.2V VS VS – 2.1V VS – 1.9V VS – 1.7V VS – 0.2V 17 VS 21 *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 1. Leakage current of PIN diode can be adjusted by an external resistor between pin 11 and VS 2. Demo board measurements (see Figure 8-1 on page 11 “Common Emitter Configuration”) 3. Demo board measurements (see Figure 9-1 on page 12 “Common Base Configuration”) 9 4913J–AUDR–10/09 7. Electrical Characteristics (Continued) See Test Circuit, Figure 8-1 on page 11; VS = 10V, Tamb = 25°C, unless otherwise specified. Pin numbers in () are referred to the QFN package. No. 5.7 5.8 Parameters Input capacitance IP3 at AGC input Test Conditions F = 100 MHz Figure 9-2 on page 13, 100 MHz and 105 MHz, VGen = 120 dBµV 900 MHz and 920 MHz VGen = 120 dBµV ViHF = 0V ViHF = Vth1,100, dIPin16(16) / dUPin18(19) UPin16 = 3V, dUPin5(3) / dUPin16(16), –dUPin6(4) / dUPin16(16) Pin 18 (19) 18 (19) Symbol CPin18 Min. 1.5 Typ. 1.75 150 Max. 1.9 Unit pF dBµV Type* D D 5.9 5.10 5.11 IP3 at AGC input Max. AGC sink current Transconductance 18 (19) 16 IPin16 dIPin16 / dUPin18 –11 0.8 148 –9 1.0 –7 1.3 dBµV µA mA/V (rms) D C C 5.12 Gain AGC1, AGC2 0.5 0.56 0.6 C *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Notes: 1. Leakage current of PIN diode can be adjusted by an external resistor between pin 11 and VS 2. Demo board measurements (see Figure 8-1 on page 11 “Common Emitter Configuration”) 3. Demo board measurements (see Figure 9-1 on page 12 “Common Base Configuration”) 10 ATR4251 4913J–AUDR–10/09 ATR4251 8. Test Circuit FM/AM Figure 8-1. VS Common Emitter Configuration 4.7Ω + 10 µF 100 nF 470 nF 500 pF 5 kΩ AMOUT1 4.7Ω + 10 µF 100 nF 150 nH AGCIN GND 22 pF 4.7 µF 2.2 µF AGCCONST 22 pF + + 47Ω1) 1 nF AMOUT1 20 15 14 13 19 18 17 16 12 AGCAM FMOUT VREF4 AGCIN FMOUT GND2 TCONST GND1 VS FM amplifier AGC AM 11 + 15 nF 2.2 nF Band gap 270Ω AGC1 FMGAIN VREF1 AGC2 FMIN VREF2 AMIN1 GND CREG 68Ω 4.7 MΩ 1 µH 22Ω 56Ω 2.2 nF 2.2 nF 2.2 nF + 1 µF 10 µF 33 pF Cant 220 nF FMIN (1) Output impedance 50Ω adjustment AMINP1 50Ω 50Ω AGCAMIN AMAGCIN 10 1 2 3 4 5 6 7 8 9 SSO20 AGC (AM) 11 4913J–AUDR–10/09 9. Application Circuit (Demo Board) Figure 9-1. R23 Common Base Configuration +VS AM/FM_OUT C30 100 nF 180 nH C24 100 nF 2.2 pF (4) +VS VB+ 10 4.7Ω + C26 10 µF R24 4.7Ω + C27 C23 100 nF C21 2.2 µF 470 nF C31 R20 33Ω(1) L3 470 nH C12 1 nF C13 T2 BC858 R11(2) 10 kΩ R10 100Ω C17 33 pF R21 100Ω C19 100 nF C20 1 pF(4) L3 GND 10 µF AGCCONST AM/FM application combined with AM AGC with the following capability FMOUT 1. Testing FM + FM AGC connector FM as input connector AM/FM_OUT as output 2. Testing AM + AM AGC connector AM as input connector AM/FM_OUT as output C18 220 nF + C33 4.7 µF AMOUT1 TCONST AGCAM VREF4 AGCIN GND2 GND1 19 18 17 VS R12(2) 2.2 kΩ 20 16 15 14 13 12 FM amplifier AGC AM 11 SSO20 Band gap AGC (AM) R3 1 kΩ C28 1 pF D3 BA779-2 C29 6 2.2 nF 1 C2 2.2 nF D1 BA679 C5 2.2 nF R7 C1 2.2 pF (2) 4 TR1 3 FMGAIN FMIN GND VREF1 VREF2 AMIN1 CREG AGC1 AGC2 +VS D2 BA679 R2 51Ω R1 47Ω C3 100 nF L1 120 nH C4 22 pF RS1 2Ω T1 C6 10 nF BC858 C11 100 pF R6 R5 C7 1 µF (2) R4 4.7 MΩ R25 68Ω + C32 10 µF 100Ω C10 220 nF 15 nF C8 1 nF R8 3 kΩ(3) R9 10 kΩ(3) FM AM (1) AM Output impedance (50Ω adjustment) (2) Leakage current reduction (3) AM AGC threshold (4) AM AGC threshold 12 ATR4251 4913J–AUDR–10/09 AGCAMIN 10 1 2 3 4 5 6 7 8 9 ATR4251 Figure 9-2. Antenna Dummy for Test Purposes 50Ω 1 nF Gen 50Ω OUTPUT AGCIN 13 4913J–AUDR–10/09 10. Internal Circuitry Table 10-1. PIN SSO20 Equivalent Pin Circuits (ESD Protection Circuits Not Shown) PIN QFN24 Symbol Equivalent Circuit 19 1 2 19 22 23 20 FMGAIN FMIN FMOUT 1 2 3 24 VREF1 3 4, 13, 20 2, 13, 21 GND VS 5 6 3 4 AGC1 AGC2 5 1, 7, 12, 18 NC 7 5 VREF2 7 14 ATR4251 4913J–AUDR–10/09 ATR4251 Table 10-1. PIN SSO20 Equivalent Pin Circuits (ESD Protection Circuits Not Shown) (Continued) PIN QFN24 Symbol Equivalent Circuit VS 8 6 AMIN1 8 9 8 CREG 9 10 10 9 AGCAMIN 11 10 AGCAM 11 15 4913J–AUDR–10/09 Table 10-1. PIN SSO20 Equivalent Pin Circuits (ESD Protection Circuits Not Shown) (Continued) PIN QFN24 Symbol Equivalent Circuit 12 11 TCONS 12 14 14 AMOUT1 14 15 15 15 VREF4 16 16 16 AGCCONST 17 17 VS 16 ATR4251 4913J–AUDR–10/09 ATR4251 Table 10-1. PIN SSO20 Equivalent Pin Circuits (ESD Protection Circuits Not Shown) (Continued) PIN QFN24 Symbol Equivalent Circuit 18 18 19 AGCIN 17 4913J–AUDR–10/09 11. Ordering Information Extended Type Number ATR4251-TKSY ATR4251-TKQY ATR4251-PFQY ATR4251-PFPY Package SSO20 SSO20 QFN24, 4 mm × 4 mm QFN24, 4 mm × 4 mm Remarks Sticks Taped and reeled Taped and reeled Taped and reeled MOQ 830 pieces 4000 pieces 6000 pieces 1500 pieces 12. Package Information Figure 12-1. SSO20 5.4±0.2 6.75-0.25 4.4±0.1 0.05+0.1 1.3±0.05 0.25±0.05 0.65±0.05 5.85±0.05 6.45±0.15 20 11 Package: SSO20 Dimensions in mm technical drawings according to DIN specifications 1 10 Drawing-No.: 6.543-5056.01-4 Issue: 1; 10.03.04 18 ATR4251 4913J–AUDR–10/09 0.15±0.05 ATR4251 Figure 12-2. QFN24 Package: QFN 24 - 4 x 4 Exposed pad 2.15 x 2.15 (acc. JEDEC OUTLINE No. MO-220) Dimensions in mm 4 0.9±0.1 2.15±0.15 24 1 18 19 24 1 technical drawings according to DIN specifications 6 0.23±0.07 0.4±0.1 13 12 7 6 0.5 nom. Drawing-No.: 6.543-5086.01-4 Issue: 2; 24.01.03 19 4913J–AUDR–10/09 13. Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 4913J-AUDR-10/09 History • Section 11 “Ordering Information” on page 18 changed • • • • Figure 1-1 “Block Diagram QFN24 Package” on page 1 changed Figure 2-1 “Pinning QFN24” on page 3 changed Table 2-1 “Pin Description QFN24” on page 3 changed Table 10-1 “Equivalent Pin Circuits (ESD Protection Circuits Not Shown) on page 14 changed • Section 11 “Ordering Information” on page 18 changed • Section 7 “Electrical Characteristics” numbers 1.1, 1.2, 1.3, 1.4, 2.4, 3.5, 3.6, 4.3 and 5.1 on pages 8 to 9 changed • Section 7 “Electrical Characteristics” numbers 2.8 and 2.9 deleted • Figure 8-1 “Common Emitter Configuration” on page 11 changed • Figure 8-1 “Common Emitter Configuration” on page 11 changed • Figure 9-1 “Common Base Configuration” on page 12 changed • Put datasheet in a new template • Figure 8-1 “Common Emitter Configuration” on page 11 changed • Figure 8-1 “Common Base Configuration” on page 12 changed • • • • • • • • Put datasheet in a new template Figure 1-1 exchanged with figure 1-2 on pages 1 to 2 Figure 2-1 exchanged with figure 2-2 on pages 3 to 4 Table 2-1 exchanged with table 2-2 on pages 3 to 4 Section 3.1 “AM Amplifier” on page 5 changed Section 3.4 “FM AGC” on page 6 renamed in “FM/TV AGC” and changed Section 7 “Electrical Characteristics” on pages 8 to 10 changed Figure 9-1 “Common Base Configuration” on page 12 changed 4913I-AUDR-03/08 4913H-AUDR-10/07 4913G-AUDR-07/07 4913F-AUDR-06/07 4913E-AUDR-02/07 20 ATR4251 4913J–AUDR–10/09 Headquarters Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 International Atmel Asia Unit 1-5 & 16, 19/F BEA Tower, Millennium City 5 418 Kwun Tong Road Kwun Tong, Kowloon Hong Kong Tel: (852) 2245-6100 Fax: (852) 2722-1369 Atmel Europe Le Krebs 8, Rue Jean-Pierre Timbaud BP 309 78054 Saint-Quentin-en-Yvelines Cedex France Tel: (33) 1-30-60-70-00 Fax: (33) 1-30-60-71-11 Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Product Contact Web Site www.atmel.com Technical Support broadcast@atmel.com Sales Contact www.atmel.com/contacts Literature Requests www.atmel.com/literature Disclaimer: T he information in this document is provided in connection with Atmel products. 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