TDA6650ATT Datasheet, PDF (28/54 Pages) NXP Semiconductors – 5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)

NXP Semiconductors
TDA6650ATT; TDA6651ATT
5 V mixer/oscillator and low noise PLL synthesizer
Table 20. Characteristics …continued
V_CCA = V_CCD = 5 V; T_amb = 25 °C; values are given for an asymmetrical IF output loaded with a 75 Ω load or with a
symmetrical IF output loaded with 1.25 kΩ; positive currents are entering the IC and negative currents are going out of the IC;
the performances of the circuits are measured in the measurement circuits Figure 27 and 28 for digital application or in the
measurement circuits Figure 29 and 30 for hybrid application; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max Unit
INT_f(step) step frequency rejection V_IF = 100 dBµV; worst case in the
[13]
frequency range
digital application
TDA6650ATT/C3/S2,
TDA6651ATT/C3/S2
-
-
−50
dBc
digital application
TDA6651ATT/C3/S3
-
-
−35
dBc
hybrid application
-
-
−57
dBc
TDA6650ATT/C3, TDA6651ATT/C3
INT_XTH
crystal oscillator
harmonics in the
IF frequency
[14] _-
-
50
dBµV
AGC output (IF amplifier in asymmetrical mode): pin AGC
AGC_TOP(p-p) AGC take-over point
(peak-to-peak level)
bits AL[2:0] = 000
122.5 124
125.5 dBµV
I_source(fast)
I_source(slow)
V_o
source current fast
source current slow
output voltage
maximum level
TDA6650ATT/C3;
TDA6651ATT/C3;
TDA6650ATT/C3/S2;
TDA6651ATT/C3/S2
7.5
9.0
11.6 µA
185
220
280
nA
3.45 3.55 3.8
V
TDA6651ATT/C3/S3
3.3
3.55 3.8
V
minimum level
0
-
0.1
V
V_o(dis)
output voltage with AGC
disabled
bits AL[2:0] = 111
TDA6650ATT/C3;
TDA6651ATT/C3;
TDA6650ATT/C3/S2;
TDA6651ATT/C3/S2
3.45 3.55 3.8
V
TDA6651ATT/C3/S3
3.3
3.55 3.8
V
V_RF(slip)
RF voltage range to
switch the AGC from
active to not active mode
-
-
0.5
dB
V_RML
low threshold AGC
output voltage
AGC bit = 0 or AGC not active
0
-
2.8
V
V_RMH
high threshold AGC
output voltage
AGC bit = 1 or AGC active
3.2
3.55 3.8
V
I_LO
leakage current
bits AL[2:0] = 110; 0 < V_AGC < 3.5 V ^[15] −50
-
+50
nA
[1] Important recommendation: to obtain the performances mentioned in this specification, the serial resistance of the crystal used with this
oscillator must never exceed 120 Ω. The crystal oscillator is guaranteed to operate at any supply voltage between 4.5 V and 5.5 V and
at any temperature between −20 °C and T_amb(max), as defined in Section 10.
[2] The drive level is expected with a 50 Ω series resistance of the crystal at series resonance. The drive level will be different with other
series resistance values.
[3] The V_XTOUT level is measured when the pin XTOUT is loaded with 5 kΩ in parallel with 10 pF.
TDA6650ATT_6651ATT_2
Product data sheet
Rev. 02 — 2 February 2007
© NXP B.V. 2007. All rights reserved.
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