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| 型號(hào)： | TDA6501 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 5 V mixer/oscillator and synthesizer for PAL and NTSC standards |
| 中文描述： | 5 V型混合機(jī)/振蕩器和合成器PAL和NTSC制式標(biāo)準(zhǔn) |
| 文件頁數(shù)： | 5/37頁 |
| 文件大?。?/td> | 223K |
| 代理商： | TDA6501 |
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9397 750 15057
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 14 June 2005
5 of 37
Philips Semiconductors
TDA6500; TDA6501
5 V mixer/oscillator and synthesizer for PAL and NTSC standards
7.
Functional description
7.1 General
TDA6500TT and TDA6501TT are programmable 2-mixer, 3-oscillator and synthesizer
MOPLLs intended for pure 3-band tuner concepts.
The device includes two double balanced mixers for the low and mid/high bands and three
oscillators for the low, mid and high bands respectively. The band limits for PAL tuners are
shown in
Table 3
.
Other functions are an IF amplifier, a wide-band AGC detector and a PLL synthesizer.
Two pins are available between the mixer output and the IF amplifier input to enable
IF filtering for improved signal handling.
Bit P0 enables Port P0 and the low band mixer and oscillator (see
Table 4
). Bit P1 enables
Port P1, the mid/high band mixer and the mid band oscillator. Bit P2 enables Port P2 and
bit P3 enables Port P3. When Ports P0 and P1 are disabled, the mid/high band mixer and
the high band oscillator are enabled.
MOSCOUT
OSCGND
P0
P1
P2
P3
P4
P6/ADC
4
3
23
24
26
22
17
18
29
30
10
9
7
11
16
15
mid band oscillator output
oscillator ground
PMOS open-drain port 0 to select low band operation
PMOS open-drain port 1 to select mid band operation
PMOS open-drain general purpose port 2
PMOS open-drain general purpose port 3
NPN open-collector general purpose port 4
NPN open-collector general purpose port 6 or ADC
input
digital ground
RF ground
serial clock input
serial data input and output
supply voltage
tuning voltage output
crystal oscillator input
PLLGND
RFGND
SCL
SDA
V
CC
VT
XTAL
13
29
20
19
10
15
14
20
4
13
14
23
18
19
Table 2:
Symbol
Pin description
…continued
Pin
TDA6500TT TDA6501TT
Description
Table 3:
Band
Low, mid and high band limits
Input f
RFpix
(MHz)
Min
45.25
161.25
455.25
Oscillator f
osc
(MHz)
Min
84.15
200.15
494.15
Max
154.25
439.25
855.25
Max
193.15
478.15
894.15
Low
Mid
High
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