tda9898 NXP Semiconductors, tda9898 Datasheet - Page 82

• Manufacturer Part Number: tda9898
• Description: Multistandard Hybrid If Processing Semiconductors
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 56.
V
V
gain controlled amplifier adjusted to typical specified output level; measurements taken in test circuit of
Figure 50
[1]
[2]
TDA9897_TDA9898_3
Product data sheet
Symbol
Reference frequency generation with crystal; pin OPTXTAL
V
R
R
C
R
I
Reference frequency input from external source; pin OPTXTAL
V
R
V
R
C
Reference frequency input from external source; W7[7] = 0; pin FREF
V
R
f
V
R
C
R
I
swoff
ref
swoff
P
i(IF)
OPTXTAL
OPTXTAL
ref(RMS)
FREF
ref(RMS)
i
rsn(xtal)
pull
swoff(OPTXTAL)
i
O
dec
i
O
dec
swoff(FREF)
= 5 V
Some parameters can be decreased at V
This parameter is not tested during production and is only given as application information.
= 10 mV (RMS); f
[1]
and
; T
Characteristics
amb
Figure 51
= 25 C; 8 MHz system; see
Parameter
voltage on pin
OPTXTAL (DC)
input resistance
crystal resonance
resistance
pull capacitance
switch-off resistance
on pin OPTXTAL
switch-off current
voltage on pin
OPTXTAL (DC)
input resistance
RMS reference
voltage
output resistance
decoupling
capacitance
voltage on pin FREF
(DC)
input resistance
reference frequency
RMS reference
voltage
output resistance
decoupling
capacitance
switch-off resistance
on pin FREF
switch-off current
IF
with 4 MHz crystal oscillator reference; unless otherwise specified.
= 36 MHz for low IF output of 5 MHz; IF input from 50
…continued
P
Conditions
pin open-circuit
to switch off crystal input by
external resistor wired
between pin OPTXTAL and
GND
R
R
pin open-circuit
of external reference signal
source
to external reference signal
source
pin open-circuit
see
of external reference signal
source; AC-coupled
to external reference signal
source
to switch off reference signal
input by external resistor
wired between pin FREF
and GND
R
R
= 4.5 V.
swoff(OPTXTAL)
swoff(OPTXTAL)
swoff(FREF)
swoff(FREF)
Table 34
Figure 46
Rev. 03 — 11 January 2008
= 3.9 k
= 22 k
and
= 0.22 k
= 3.3 k
Table
35; CW test input signal is used for specification;
[2]
[9]
[2]
[2]
[2]
[2]
[8]
TDA9897; TDA9898
Min
2.3
-
-
-
0.22
-
-
2.3
-
80
-
22
2.2
50
-
15
-
22
3.9
-
-
via broadband transformer 1 : 1;
Multistandard hybrid IF processing
Typ
2.6
2
-
-
-
-
500
2.6
2
-
2
100
2.5
-
4
150
-
100
-
-
75
Max
2.9
-
200
-
4.7
1600
-
2.9
-
400
4.7
-
2.8
-
-
500
4.7
-
27
100
-
© NXP B.V. 2008. All rights reserved.
82 of 103
Unit
V
k
pF
k
V
k
mV
k
pF
V
k
MHz
mV
k
pF
k
A
A
A
A