công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
MC1350D bảng dữ liệu(PDF) 3 Page - LANSDALE Semiconductor Inc. |
|
MC1350D bảng dữ liệu(HTML) 3 Page - LANSDALE Semiconductor Inc. |
3 / 6 page www.lansdale.com Page 3 of 6 Issue A LANSDALE Semiconductor, Inc. ML1350 GENERAL OPERATING INFORMATION The input amplifiers (Q1 and Q2) operate at constant emitter currents so that input impedance remains independent of AGC action. Input signals may be applied single–ended or differen- tially (for AC) with identical results. Terminals 4 and 6 may be driven from a transformer, but a DC path from either terminal to ground is not permitted. AGC action occurs as a result of an increasing voltage on the base of Q4 and Q5 causing these transistors to conduct more heavily thereby shunting signal current from the interstage amplifiers Q3 and Q6. The output amplifiers are supplied from an active current source to maintain constant quiescent bias thereby holding output admittance nearly constant. Collector voltage for the output amplifier must be supplied through a center–tapped tuning coil to Pins 1 and 8. The 12 V supply (V+) at Pin 2 may be used for this purpose, but output admit- tance remains more nearly constant if a separate 15 V supply (V+ +) is used, because the base voltage on the output amplifi- er varies with AGC bias. AGC Amplifier Section Input Amplifier Section Bias Supplies Output Amplifier Section AGC Input 70 2 (+) V + + 8 1.47k 12.1 k 5.53k 470 Q6 Q5 Q3 Q4 470 5 2.0k Output 1 ( – ) Q7 Q10 Q8 45 Q9 2.8k 200 200 2.8k 200 1.4k 1.9k 5.6k 8.4k 7 Gnd 1.1k 5.0k Q1 Q2 66 4 ( – ) Inputs 6 ( + ) 5.0k 1.1k Figure 4. Circuit Schematic V+ Figure 6. Power Gain, AGC and Noise Figure Test Circuits (b) Alternate 45 MHz *Connect to ground for maximum power gain test. All power supply chokes (Lp), are self–resonant at input frequency. LP ≥ 20 kΩ. See Figure 5 for Frequency Response Curve. ML1350 4 3 2 1 5 6 7 8 RS = 50Ω C1 5.1k VAGC 0.68µH .001 0.1 0.001 Input +12V RL = 50Ω Output 0.33µH L1 C2 C3 5.1k 0.001 (a) 45 MHz and 58 MHz +12V 0.001µF Input RS = 50Ω C2 LP LP LP 1.5–20pF 4 3 2 1 T1 Output RL = 50Ω 5 6 7 8 5.1k VAGC * ML1350 0.001µF 0.001 µF C1 L1 0.001µF 0.001µF 0.001µF T1 Primary Winding Secondary Winding Slug = 18 Turns on a 1/4" coil form, center–tapped, #25 AWG = 2 Turns centered over Primary Winding @ 45 MHz = 1 Turn @ 58 MHz = Carbonyl E or J L1 @ 45 MHz = 7 1/4 Turns on a 1/4" coil form L1 @ 58 MHz = 6 Turns on a 1/4" coil form L1 Ferrite Core 14 Turns 28 S.W.G. C1 C2 C3 5–25 pF 5–25 pF 5–25 pF 45 MHz 58 MHz L1 0.4 µH Q ≥ 100 0.3 µH Q ≥ 100 T1 1.3 µH to 3.4 µH Q ≥ 100 @ 2.0 µH 1.2 µH to 3.8 µH Q ≥ 100 @ 2.0 µH C1 50 pF to 160 pF 8.0 pF to 60 pF C2 8.0 pF to 60 pF 3.0 pF to 35 pF Figure 5. Frequency Response Curve (45 MHz and 58 MHz) Scale: 1.0 MHz/cm |
Số phần tương tự - MC1350D |
|
Mô tả tương tự - MC1350D |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |