參數(shù)資料
型號: TDA7528
廠商: STMICROELECTRONICS
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝: 10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64
文件頁數(shù): 24/65頁
文件大?。?/td> 610K
代理商: TDA7528
Electrical characteristics
TDA7528
Doc ID 13141 Rev 6
3.6.3
IF buffer amplifier
The IF buffer amplifier is a programmable, single ended amplifier. The input for the IF buffer
amplifier can be selected by software between IFin1 and IFin2. The output of the amplifier is
multiplexed with GPIO5
3.7
Phase Locked Loop
Table 15.
IF buffer amplifier electrical characteristics
Symbol
Parameter
Test condition
Min.
Typ
Max
Units
Gmin
Min. gain
Series resistance 220
Ω,
terminated with 330
Ω
--11
-
dB
Gmax
Max. gain
Series resistance 220
Ω,
terminated with 330
Ω
-3-
dB
Gstep
Gain step
3bit
-
2
-
dB
-
Absolute gain error
-
-3
3
dB
-
Relative gain error
Step by step
-1.5
1.5
dB
vnoise(1)
Input noise voltage
@ 10.7 MHz, 3 dB gain
-
8.5
15
nV/
√ Hz
IIP3(1)
3rd order intercept point
@ gain 3 dB,Vout=1 Vpp
with 500
Ω ≤ R
L ≤ 600 Ω
115
120
-
dBV
-
3 dB bandwidth
-
50
-
MHz
-
Output DC voltage
-
1.6
-
2.1
V
-
External output load
-
400
550
1000
Ω
-
Output impedance
-
80
140
250
Ω
1.
Parameter not guaranteed by production test
Table 16.
Phase Locked Loop electrical characteristics
Parameter
Test condition
Min.
Typ
Max
Units
Settling time FM(1)
Δf < 0.01 %
@ fPFD = 300 kHz
fractional mode, with loop filter
according application schematic
@ fPFD = 100 kHz
integer mode
-
300
500
s
VCC = 4.6 – 4.7V, fPFD = 300kHz, loop
filter according application schematic
fPFD = 100 kHz
-
300
500
600
s
Spurious suppression
Suppression of spurious with
compensation DAC
low current charge pump
50 A
≤ Icp ≤ 750 A
520
-
dB
1.
Parameter not guaranteed by production test, depends on loop filter circuitry and CP current settings. For further
information see application note information
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