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Número de pieza TDA9898
Descripción Multistandard hybrid IF processing
Fabricantes NXP Semiconductors 
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TDA9897; TDA9898
Multistandard hybrid IF processing
Rev. 04 — 25 May 2009
Product data sheet
1. General description
The Integrated Circuit (IC) is suitable for Intermediate Frequency (IF) processing including
global multistandard Analog TV (ATV), Digital Video Broadcast (DVB) and mono FM radio
using only 1 IC and 1 to 3 fixed Surface Acoustic Waves (SAWs) (application dependent).
TDA9898 includes, TDA9897 excludes L and L-accent standard.
2. Features
2.1 General
I 5 V supply voltage
I I2C-bus control over all functions
I Four I2C-bus addresses provided; selection by programmable Module Address (MAD)
I Three I2C-bus voltage level supported; selection via pin BVS
I Separate gain controlled amplifiers with input selector and conversion for incoming IF
[analog Vision IF (VIF) or Sound IF (SIF) or Digital TV (DTV)] allows the use of
different filter shapes and bandwidths
I All conventional ATV standards applicable by using DTV bandwidth window (SAW)
filter
I Two 4 MHz reference frequency stages; the first one operates as crystal oscillator, the
second one as external signal input
I Stabilizer circuit for ripple rejection and to achieve constant output signals
I Smallest size, simplest application
I ElectroStatic Discharge (ESD) protection for all pins
2.2 Analog TV processing
I Gain controlled wideband VIF amplifier; AC-coupled
I Multistandard true synchronous demodulation with active carrier regeneration: very
linear demodulation, good intermodulation figures, reduced harmonics and excellent
pulse response
I Integrated Nyquist processing, providing additionally image suppression for high
adjacent channel selectivity
I Optional use of conventional Nyquist filter to support a wide range of applications
I Gated phase detector for L and L-accent standards
I Fully integrated VIF Voltage-Controlled Oscillator (VCO), alignment-free, frequencies
switchable for all negative and positive modulated standards via I2C-bus
I VIF Automatic Gain Control (AGC) detector for gain control; operating as a peak sync
detector for negative modulated signals and as a peak white detector for positive
modulated signals

1 page




TDA9898 pdf
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
Table 1. Quick reference data …continued
VP = 5 V; Tamb = 25 °C.
Symbol Parameter
Vo(RMS)
RMS output voltage
FM sound part
Vi(FM)(RMS) RMS FM input voltage
IAFC/fRIF
αAM
change of AFC current with RIF
frequency
AM suppression
Digital TV signal processing
Digital direct IF
Vo(dif)(p-p)
peak-to-peak differential output
voltage
GIF(max)
GIF(cr)
PSRR
maximum IF gain
control range IF gain
power supply ripple rejection
Digital low IF
Vo(dif)(p-p)
peak-to-peak differential output
voltage
GIF(max)
maximum IF gain
GIF(cr)
fsynth
control range IF gain
synthesizer frequency
Conditions
IF intercarrier single-ended
to GND; see Figure 9 and
Table 21
B/G standard;
SC1 on; SC2 off;
internal BP via FM AGC
L standard; without
modulation; W7[5] = 0;
internal BP + 6 dB
gain controlled operation;
W1[1:0] = 10 or
W1[1:0] = 11 or
W1[1:0] = 01; see Figure 9
AFC radio mode
referenced to 27 kHz
FM deviation;
50 µs de-emphasis;
AM: f = 1 kHz; m = 54 %
between pin OUT2A and
pin OUT2B
W4[7] = 0
W4[7] = 1
output peak-to-peak level to
input RMS level ratio
residual spurious at nominal
differential output voltage
dependent on power supply
ripple
fripple = 70 Hz
fripple = 20 kHz
between pin OUT1A and
pin OUT1B; W4[7] = 0
output peak-to-peak level to
input RMS level ratio
see Table 34 and Table 35
Min Typ Max Unit
90 140 180 mV
90 140 180 mV
2-
300 mV
[6] 0.85 1.05 1.25 µA/kHz
35 46 -
dB
[7]
-
-
[8] -
[8] 60
[8]
1.0 1.1 V
0.50 0.55 V
83 -
dB
66 -
dB
- 60 -
- 60 -
[7] -
2-
[8] -
89 -
[8] 60 66 -
---
dB
dB
V
dB
dB
MHz
TDA9897_TDA9898_4
Product data sheet
Rev. 04 — 25 May 2009
© NXP B.V. 2009. All rights reserved.
5 of 103

5 Page





TDA9898 arduino
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
VP
43, 44
EXTERNAL SOUND
BAND-PASS FILTER(1)
GNDA
40, 41
EXTFILO EXTFILI
15 17
SUPPLY
+3 dB
A
B
TDA9897
C
BP on/off
FM
AGC
BAND-PASS
FILTER
D
FM
SWITCH
E
AM
SWITCH
F
G
H
J
4 MHz reference
input
R(2)
R(2)
FREF
46
OPTXTAL
39
4 MHz FREQUENCY
REFERENCE
OUTPUT
SWITCH
29
30
26
27
OUT2A
OUT2B
OUT1A
OUT1B
FM
NB PLL
AM
DEMODULATOR
21
EXTFMI
20 CDEEM
31
AUD
28 CAF
VIF AGC
TAGC
SIF AGC
FM AGC
AFC
port
I2C-bus
19
LFFM
VIF
AGC
port
TAGC
port
33 CVBS
16
MPP
12
PORT1
35
PORT2
42 PORT3
(1) Optional.
(2) Connect resistor if input or crystal is not used.
Fig 4. Block diagram of TDA9897 (continued from Figure 3)
001aai735
TDA9897_TDA9898_4
Product data sheet
Rev. 04 — 25 May 2009
© NXP B.V. 2009. All rights reserved.
11 of 103

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