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参数资料
型号： TDA9898HL/V3
厂商： NXP SEMICONDUCTORS
元件分类： 消费家电
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封装： 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT313-2, LQFP-48
文件页数： 64/103页
文件大小： 529K
代理商： TDA9898HL/V3
TDA9897_TDA9898_4
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 25 May 2009
63 of 103
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
[5]
BLF(3dB) = 100 kHz (damping factor d = 1.7; calculated with sync level within gain control range). Calculation of the VIF PLL lter by
using the following formulae:
, valid for d
≥ 1.2
with the following parameters:
KO = VCO steepness (Hz/V),
KD = phase detector steepness (A/rad),
R = loop lter serial resistor (
),
C = loop lter serial capacitor (F),
BLF(3dB) = 3 dB LF bandwidth (Hz),
d = damping factor.
[6]
The VCO frequency offset related to the PC frequency is set to 1 MHz with white picture video modulation.
[7]
AC load; CL < 20 pF and RL >1k. The sound carrier frequencies (depending on TV standard) are attenuated by the integrated sound
carrier traps.
[8]
Condition: luminance range (5 steps) from 0 % to 100 %. Measurement value is based on 4 of 5 steps.
[9]
Measurement using 200 kHz high-pass lter, 5 MHz low-pass lter and subcarrier notch lter (
“ITU-T J.64”).
[10] Modulation VSB; sound carrier off; fvideo > 0.5 MHz.
[11] Sound carrier on; fvideo = 10 kHz to 10 MHz.
[12] The sound carrier trap can be bypassed by setting the I2C-bus bit W2[0] to logic 0; see Table 23. In this way the full composite video
spectrum appears at pin CVBS. The video amplitude is reduced to 1.1 V (p-p).
[13] Measurement condition: with transformer, transmitter pre-correction on; reference is at 1 MHz.
[14] The response time is valid for a VIF input level range from 200
Vto70mV.
[15] AGC response time increased if no AGC event occurs during two lines at minimum.
[16] AGC response time increased if video level falls below half of selected level.
[17] Load applied to output pin causes signal loss. The resulting gain can be calculated by using
.
[18] See Figure 19 to smooth current pulses.
[19] To match the AFC output signal to different tuning systems a current output is provided. The test circuit is given in Figure 19. The
AFC steepness can be changed by different applications of resistors R1 and R2.
[20] The AFC value of the VIF and RIF frequency is generated by using digital counting methods. The used counter resolution is provided
with an uncertainty of
±1 bit corresponding to ±25 kHz. This uncertainty of ±25 kHz has to be added to the frequency accuracy
parameter.
[21] Measured with an FM deviation of 25 kHz and the typical AF output voltage of 500 mV (RMS). The audio signal processing stage
provides headroom of 6 dB with THD < 1.5 %. The I2C-bus bits W3[0] and W3[1] control the AF output signal amplitude from
0dBto
18 dB in steps of 6 dB. Reducing the audio gain for handling a frequency deviation of more than 55 kHz avoids AF output
signal clipping.
[22] Amplitude response depends on dimensioning of FM PLL loop lter.
[23] The lower AF cut-off frequency depends on the value of the capacitor at pin CAF. A value of CAF1 = 470 nF leads to f3dB(AF)l ≈ 20 Hz
and CAF1 = 220 nF leads to f3dB(AF)l ≈ 40 Hz.
[24] For all signal-to-noise measurements the used VIF modulator has to meet the following specications:
a) Incidental phase modulation for black-to-white jump less than 0.5 degrees.
b) QSS AF performance, measured with the television demodulator AMF2 (audio output, weighted signal-to-noise ratio) better than
60 dB (at deviation 27 kHz) for 6 kHz sine wave black-to-white video modulation.
c) Picture-to-sound carrier ratio PC / SC1 = 13 dB (transmitter).
[25] The PC / SC ratio is calculated as the addition of TV transmitter PC / SC1 ratio and SAW lter PC / SC1 ratio. This PC / SC ratio is
necessary to achieve the weighted signal-to-noise values as noted. A different PC / SC ratio will change these values.
[26] Measurement condition is SC1 / SC2
≥ 7dB.
[27] The differential QSS signal output on pins OUT1A and OUT1B is analyzed by a test demodulator TDA9820. The signal-to-noise ratio of
this device is better than 60 dB. The measurement is related to an FM deviation of
±27 kHz and in accordance with “ITU-R BS.468-4”.
B
LF
3dB
–
()
K
OK D R
=
d
1
2
---R2
πK
OKDC
=
G
v(load)
G
v
20
R
L
R
O
R
L
+
--------------------
log
+
=
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相关代理商/技术参数
参数描述
TDA9898HN 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Multistandard hybrid IF processing
TDA9898HN/V2,518 功能描述:上下转换器 MULTI APPL SYS RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128
TDA9898HN/V2,551 功能描述:上下转换器 MULTI APPL SYS RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128
TDA9898HN/V2-S 功能描述:上下转换器 MULTI APPL SYS FOR TERRESTR IF RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128
TDA9898HN/V2-T 功能描述:上下转换器 MULTI APPL SYS FOR TERRESTR IF RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128
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