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参数资料
| 型号： | TDA6402A |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | 5 V mixers/oscillators andsynthesizers for cable TV and VCR 2-band tuners(应用于TV电缆和 VCR二频带调谐的5 V 混频器/振荡器和合成器) |
| 中文描述： | 5伏混频器/电缆电视和录像机2频段调谐器（应用于电视电缆和录像机二频带调谐的5伏混频器/振荡器和合成器振荡器andsynthesizers） |
| 文件页数： | 4/40页 |
| 文件大小： | 195K |
| 代理商： | TDA6402A |
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2000 Jan 24
12
Philips Semiconductors
Product specication
5 V mixers/oscillators and synthesizers for
cable TV and VCR 2-band tuners
TDA6402; TDA6402A;
TDA6403; TDA6403A
POWER-ON RESET
The power-on detection threshold voltage VPOR is set to
VCC = 2 V at room temperature. Below this threshold, the
device is reset to the power-on state.
At power-on state, the charge pump current is set to
280
A, the tuning voltage output is disabled, the test bits
T2, T1 and T0 are set to ‘001’ (automatic charge pump
switch ‘ON’) and RSB is set to logic 1.
PUHF is ‘OFF’, which means that the UHF oscillator and
the UHF mixer are switched off. Consequently, the VHF
oscillator and the VHF mixer are switched on. PVHFL and
PVHFH are ‘OFF’, which means that the VHF tank circuit
is working in the VHF I sub-band. The tuning amplifier is
switched off until the first transmission. In that case, the
tank circuit in VHF I is supplied with the maximum tuning
voltage. The oscillator is therefore working at the end of
the VHF I sub-band.
If the first sequence transmitted to the device
has 18 or 19 bits, the reference divider ratio is set to 512
or 1024, depending on the sequence length.
If the sequence has 27 bits, the reference divider ratio is
fixed by RSA and RSB bits (see Table 8).
Fig.4 Normal mode; 18-bit data format (RSA = 1).
handbook, full pagewidth
MGE693
14
5
18
N13
N12 N11
N10
N9
N8
N7
N6
N5
N4
N3
N2
N1
N0
PUHF
FMST
PVHFH
PVHFL
INVALID
DATA
BAND SWITCH
DATA
FREQUENCY
DATA
INVALID
DATA
LOAD BAND SWITCH
REGISTER
LOAD FREQUENCY
REGISTER
DA
CL
CE
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA6403 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:5 V mixers/oscillators and synthesizers for cable TV and VCR 2-band tuners |
| TDA6403A | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:5 V mixers/oscillators and synthesizers for cable TV and VCR 2-band tuners |
| TDA6404 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:5 V mixer/oscillator-PLL synthesizers for hyperband tuners |
| TDA6404TS | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:5 V mixer/oscillator-PLL synthesizers for hyperband tuners |
| TDA6405 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:5 V mixer/oscillator-PLL synthesizers for hyperband tuners |
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