tda6651tt/c3/s3 NXP Semiconductors, tda6651tt/c3/s3 Datasheet - Page 11

• Manufacturer Part Number: tda6651tt/c3/s3
• Description: 5 V Mixer/oscillator And Low Noise Pll Synthesizer For Hybrid Terrestrial Tuner Digital And Analog
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA6650TT_6651TT_5
Product data sheet
8.1.4 AGC detector setting
8.1.5 Charge pump current setting
Table 10.
The AGC take-over point can be selected out of 6 levels according to
Table 11.
[1]
[2]
[3]
[4]
The charge pump current can be chosen from 8 values depending on the value of bits
CP2, CP1 and CP0 bits; see
account when ALBC mode is in use.
Table 12.
R2
0
0
0
0
1
1
1
1
AL2
0
0
0
0
1
1
1
1
CP2
0
0
0
0
1
This take-over point is available for both symmetrical and asymmetrical modes.
This take-over point is available for asymmetrical mode only.
The AGC current sources are disabled. The AGC output goes into a high-impedance state and an external
AGC source can be connected in parallel and will not be influenced.
The AGC detector is disabled and I
Reference divider ratio select bits
AGC programming
Charge pump current
R1
0
0
1
1
0
0
1
1
AL1
0
0
1
1
0
0
1
1
CP1
0
0
1
1
0
Rev. 05 — 10 January 2007
R0
0
1
0
1
0
1
0
1
AL0
0
1
0
1
0
1
0
1
CP0
0
1
0
1
0
Table
AGC
Reference divider
ratio
2
1
1
4
1
-
-
-
Charge pump current
number
1
2
3
4
5
5 V mixer/oscillator and low noise PLL synthesizer
12. The programming of the CP bits are not taken into
= 9 A.
[1]
[1]
[1]
[2]
[2]
[2]
[3]
[4]
TDA6650TT; TDA6651TT
Typical take-over point level
124 dB V (p-p)
121 dB V (p-p)
118 dB V (p-p)
115 dB V (p-p)
112 dB V (p-p)
109 dB V (p-p)
I
V
AGC
AGC
= 0 A
= 3.5 V
Frequency
comparison
2 MHz
4 MHz
4 MHz
1 MHz
4 MHz
-
-
-
Typical current (absolute
value in A)
38
54
83
122
163
Table
© NXP B.V. 2007. All rights reserved.
62.5 kHz
142.86 kHz
166.67 kHz
50 kHz
125 kHz
reserved
reserved
reserved
Frequency step
11.
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