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參數(shù)資料
| 型號(hào)： | SA615 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | High performance low power FM IF system(高性能低功耗FM IF系統(tǒng)) |
| 中文描述： | IF系統(tǒng)高性能低功耗調(diào)頻（高性能低功耗調(diào)頻中頻系統(tǒng)） |
| 文件頁(yè)數(shù)： | 8/14頁(yè) |
| 文件大小： | 157K |
| 代理商： | SA615 |
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Philips Semiconductors
Product specification
SA615
High performance low power mixer FM IF system
1997 Nov 07
8
RF GENERATOR
45MHz
SA615 DEM0–BOARD
RSSI
AUDIO
DATA
C–MESSAGE
HP339A DISTORTION
ANALYZER
SCOPE
DC VOLTMETER
V
CC
(+6)
SR00345
Figure 5. SA615 Application Circuit Test Set Up
NOTES:
1. C-message: The C-message filter has a peak gain of 100 for accurate measurements. Without the gain, the measurements may be
affected by the noise of the scope and HP339 analyzer.
2. Ceramic filters: The ceramic filters can be 30kHz SFG455A3s made by Murata which have 30kHz IF bandwidth (they come in blue), or
16kHz CFU455Ds, also made by Murata (they come in black). All of our specifications and testing are done with the more wideband filter.
3. RF generator: Set your RF generator at 45.000MHz, use a 1kHz modulation frequency and a 6kHz deviation if you use 16kHz filters, or
8kHz if you use 30kHz filters.
4. Sensitivity: The measured typical sensitivity for 12dB SINAD should be 0.22
μ
V or –120dBm at the RF input.
5. Layout: The layout is very critical in the performance of the receiver. We highly recommend our demo board layout.
6. RSSI: The smallest RSSI voltage (i.e., when no RF input is present and the input is terminated) is a measure of the quality of the layout and
design. If the lowest RSSI voltage is 250mV or higher, it means the receiver is in regenerative mode. In that case, the receiver sensitivity
will be worse than expected.
7. Supply bypass and shielding: All of the inductors, the quad tank, and their shield must be grounded. A 10–15
μ
F or higher value tantalum
capacitor on the supply line is essential. A low frequency ESR screening test on this capacitor will ensure consistent good sensitivity in
production. A 0.1
μ
F bypass capacitor on the supply pin, and grounded near the 44.545MHz oscillator improves sensitivity by 2–3dB.
8. R5 can be used to bias the oscillator transistor at a higher current for operation above 45MHz. Recommended value is 22k
, but should not
be below 10k
.
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| SA615D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:High performance low power mixer FM IF system |
| SA615D,602 | 功能描述:射頻無線雜項(xiàng) HI PERF LP MIXER FM IF SYSTEM RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| SA615D,623 | 功能描述:上下轉(zhuǎn)換器 HI PERF LP MIXER FM IF SYSTEM RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| SA615D/01 | 功能描述:上下轉(zhuǎn)換器 HI PERF LP MIXER FM IF SYSTEM RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| SA615D/01,112 | 功能描述:射頻無線雜項(xiàng) HI PERF LP MIXER FM RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
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