tda9898 NXP Semiconductors, tda9898 Datasheet - Page 80

• 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
TDA9897_TDA9898_3
Product data sheet
Symbol
Tuner AGC; pin TAGC
Integral TAGC loop mode (W6[7:6] = 10); TAGC is current output; unmodulated IF
V
I
I
R
V
V
t
Filter synthesizer PLL; pin LFSYN1
V
K
K
I
I
source
sink
d
sink(o)PD(max)
source(o)PD(max)
P
i(IF)
i(IF)(RMS)
acc(set)TOP
sat(u)
sat(l)
th(fast)AGC
LFSYN1
O
D
L
= 5 V
acc(set)TOP
= 10 mV (RMS); f
[1]
and
; T
Characteristics
/ T TOP setting accuracy
amb
Figure 51
= 25 C; 8 MHz system; see
Parameter
RMS IF input voltage
TOP setting accuracy
source current
sink current
variation with
temperature
load resistance
upper saturation
voltage
lower saturation
voltage
AGC fast mode
threshold
delay time
voltage on pin
LFSYN1
VCO steepness
phase detector
steepness
maximum phase
detector output sink
current
maximum phase
detector output
source 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
Conditions
at starting point of tuner
AGC takeover;
I
TAGC charge current
TAGC discharge current;
V
I
W9[4:0] = 1 0000
pin operating as current
output
pin operating as current
output
activated by internal fast
AGC detector; I
setting corresponds to
W9[4:0] = 1 0000
before activating; V
below
sink(TAGC)
sink(TAGC)
f
I
TAGC
VCO
LFSYN1
W9[4:0] = 0 0000
W9[4:0] = 1 0000
W9[4:0] = 1 1111
normal mode
fast mode activated by
internal level detector
Table 34
/ V
= 1 V
Rev. 03 — 11 January 2008
th(fast)AGC
/
= 100 A
= 100 A;
LFSYN1
VCO
and
2
C-bus
Table
i(IF)
35; CW test input signal is used for specification;
[2]
[2]
[2]
[2]
[2]
[2]
TDA9897; TDA9898
Min
-
-
-
0.20
7
400
-
50
V
-
6
40
1.0
-
-
-
-
2
P
via broadband transformer 1 : 1;
Multistandard hybrid IF processing
0.3
Typ
57.9
78.7
98.2
-
0.27
10
500
-
-
-
-
8
60
-
3.75
9
-
-
Max
-
-
-
+2
0.34
13
600
0.02
-
-
0.3
10
80
3.5
-
-
65
65
© NXP B.V. 2008. All rights reserved.
80 of 103
Unit
dB V
dB V
dB V
dB
dB/K
M
V
V
dB
ms
V
MHz/V
A
A
A
A/rad
A
A