TDA9897; TDA9898
Multistandard hybrid IF processing
Rev. 03 — 11 January 2008
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 including L and L-accent standard. TDA9897 without L and L-accent standard.
2. Features
2.1 General
I
I
I
I
I
5 V supply voltage
I
2
C-bus control over all functions
Four I
2
C-bus addresses provided; selection by programmable Module Address (MAD)
Three I
2
C-bus voltage level supported; selection via pin BVS
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
All conventional ATV standards applicable by using DTV bandwidth window
[Band-Pass (BP)] filter
Easy to use default settings for almost every standard provided, selectable via I
2
C-bus
Two 4 MHz reference frequency stages; the first one operates as crystal oscillator, the
second one as external signal input
Stabilizer circuit for ripple rejection and to achieve constant output signals
Smallest size, simplest application
ElectroStatic Discharge (ESD) protection for all pins
I
I
I
I
I
I
2.2 Analog TV processing
I
Gain controlled wide-band 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
Internal Nyquist slope processing; switch-off able for alternative use of inexpensive
Nyquist slope SAW filter with additive video noise improvement
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 I
2
C-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
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
I
Optimized AGC modes for negative modulation; e.g. very fast reaction time for VIF and
SIF
I
Precise fully digital Automatic Frequency Control (AFC) detector with 4-bit
Digital-to-Analog Converter (DAC); AFC bits can be read-out via I
2
C-bus
I
High precise Tuner AGC (TAGC) TakeOver Point (TOP) for negative modulated
standards; TOP adjust via I
2
C-bus
I
TAGC TOP for positive standards and Received Signal Strength Indication (RSSI);
adjustable via I
2
C-bus or alternatively by potentiometer
I
Fully integrated Sound Carrier (SC) trap for any ATV standard (SC at 4.5 MHz,
5.5 MHz, 6.0 MHz and 6.5 MHz)
I
SIF AGC for gain controlled SIF amplifier and high-performance single-reference
Quasi Split Sound (QSS) mixer
I
Fully integrated sound BP filter supporting any ATV standard
I
Optional use of external FM sound BP filter
I
AM sound demodulation for L and L-accent standard
I
Alignment-free selective FM Phase-Locked Loop (PLL) demodulator with high linearity
and low noise; external FM input
I
VIF AGC voltage monitor output or port function
I
VIF AFC current or tuner, SIF or FM AGC voltage monitor output
I
2nd SIF output, gain controlled by internal SIF AGC or by internal FM carrier AGC for
Digital Signal Processor (DSP)
I
Fully integrated BP filter for 2nd SIF at 4.5 MHz, 5.5 MHz, 6.0 MHz or 6.5 MHz
2.3 Digital TV processing
I
I
I
I
I
I
I
I
I
I
I
I
I
Applicable for terrestrial and cable TV reception
70 dB variable gain wide-band IF amplifier (AC-coupled)
Gain control via external control voltage (0 V to 3 V)
2 V (p-p) differential low IF (downconverted) output or 1 V (p-p) 1st IF output for direct
Analog-to-Digital Converter (ADC) interfacing
DVB downconversion with integrated selectivity for Low IF (LIF)/Zero IF (ZIF)
Integrated anti-aliasing tracking low-pass filter
Fully integrated synthesizer controlled oscillator with excellent phase noise
performance
Synthesizer frequencies for a wide range of world wide DVB standards (for IF center
frequencies of 34.5 MHz, 36 MHz, 44 MHz and 57 MHz)
All DVB bandwidth ranges supported (including ZIF I/Q)
TAGC detector for independent tuner gain control loop applications
TAGC operating as peak detector, fast reaction time due to additional speed-up
detector
Port function
TAGC voltage monitor output
TDA9897_TDA9898_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 11 January 2008
2 of 103
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
2.4 Dual mode
I
Fully performed DTV processing and additional ATV video signal processing in
parallel, but with reduced performance, for very fast channel scan
I
VIF AGC voltage monitor output or port function
I
VIF AFC current monitor output or TAGC voltage output
2.5 FM radio mode
I
Gain controlled wide-band Radio IF (RIF) amplifier; AC-coupled
I
Buffered RIF amplifier wide-band output, gain controlled by internal RIF AGC
I
Fully integrated BP filter for 2nd RIF at 4.5 MHz, 5.5 MHz, 6.0 MHz, 6.5 MHz or
10.7 MHz
I
2nd RIF output, gain controlled by internal RIF AGC or by internal FM carrier AGC for
DSP
I
Alignment-free selective FM PLL demodulator with high linearity and low noise
I
Precise fully digital AFC detector with 4-bit DAC; AFC bits read-out via I
2
C-bus
I
Port function
I
Radio AFC current or tuner, RIF or FM AGC voltage monitor output
3. Applications
I
Analog and digital TV front-end applications for TV sets, recording applications and
personal computer cards
4. Quick reference data
Table 1.
Quick reference data
V
P
= 5 V; T
amb
= 25
°
C.
Symbol
V
P
I
P
Video part
V
i(IF)(RMS)
G
VIF(cr)
f
VIF
∆f
VIF(dah)
RMS IF input voltage
control range VIF gain
VIF frequency
digital acquisition help VIF
frequency window
see
Table 25
related to f
VIF
all standards except M/N
M/N standard
V
o(video)(p-p)
peak-to-peak video output voltage
see
Figure 10
positive or negative
modulation; normal mode
and sound carrier on
trap bypass mode and
sound carrier off
TDA9897_TDA9898_3
Parameter
supply voltage
supply current
Conditions
[1]
Min
4.5
-
Typ
5.0
-
Max
5.5
190
Unit
V
mA
Analog TV signal processing
lower limit at
−1
dB video
output signal
-
60
-
-
-
[2]
60
66
-
±2.3
±1.8
2.0
100
-
-
-
-
2.3
µV
dB
MHz
MHz
MHz
V
1.7
[3]
-
1.1
-
V
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 11 January 2008
3 of 103
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
Table 1.
Quick reference data
…continued
V
P
= 5 V; T
amb
= 25
°
C.
Symbol
G
dif
Parameter
differential gain
Conditions
Min
[2][4]
Typ
-
-
2
2
8
Max
5
7
4
4
-
Unit
%
%
deg
deg
MHz
“ITU-T J.63 line 330”
B/G standard
L standard
-
-
[2][4]
ϕ
dif
differential phase
“ITU-T J.63 line 330”
B/G standard
L standard
-
-
[3]
B
video(−3dB)
−3
dB video bandwidth
trap bypass mode and
sound carrier off; AC load:
C
L
< 20 pF, R
L
> 1 kΩ
M/N standard;
f = f
SC1
= 4.5 MHz;
see
Figure 21
B/G standard;
f = f
SC1
= 5.5 MHz;
see
Figure 23
6
α
SC1
first sound carrier attenuation
[3]
38
-
-
dB
[3]
35
-
-
dB
(S/N)
w
weighted signal-to-noise ratio
normal mode and sound
carrier on; B/G standard;
50 % grey video signal;
unified weighting filter
(“ITU-T
J.61”);
see
Figure 20
normal mode and sound
carrier on; f
ripple
= 70 Hz;
video signal; grey level;
positive and negative
modulation; see
Figure 11
AFC TV mode
[2][5]
53
57
-
dB
PSRR
CVBS
power supply ripple rejection on
pin CVBS
[2]
14
20
-
dB
∆I
AFC
/∆f
VIF
Audio part
V
o(AF)(RMS)
change of AFC current with VIF
frequency
RMS AF output voltage
[6]
0.85
1.05
1.25
µA/kHz
FM: QSS mode;
27 kHz FM deviation;
50
µs
de-emphasis
AM: 54 % modulation
FM: 50
µs
de-emphasis;
FM deviation: for TV mode
27 kHz and for radio mode
22.5 kHz
AM: 54 % modulation;
BP on; see
Figure 33
430
540
650
mV
400
-
500
0.15
600
0.50
mV
%
THD
total harmonic distortion
-
80
0.5
100
1.0
-
%
kHz
f
−3dB(AF)
AF cut-off frequency
W3[2] = 0; W3[4] = 0;
without de-emphasis;
FM window
width = 237.5 kHz
TDA9897_TDA9898_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 11 January 2008
4 of 103
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
Table 1.
Quick reference data
…continued
V
P
= 5 V; T
amb
= 25
°
C.
Symbol
(S/N)
w(AF)
Parameter
AF weighted signal-to-noise ratio
Conditions
Min
48
Typ
56
Max
-
Unit
dB
“ITU-R BS.468-4”
FM: 27 kHz FM deviation;
50
µs
de-emphasis; vision
carrier unmodulated;
FM PLL only
AM: BP off
44
14
90
45
50
20
140
70
-
-
180
90
dB
dB
mV
mV
PSRR
V
o(RMS)
power supply ripple rejection
RMS output voltage
f
ripple
= 70 Hz; see
Figure 11
IF intercarrier single-ended
to GND; SC1 on; SC2 off
IF intercarrier single-ended
to GND; L standard;
without modulation; BP on;
W7[5] = 0
FM sound part
V
i(FM)(RMS)
RMS FM input voltage
gain controlled operation;
W1[1:0] = 10 or
W1[1:0] = 11 or
W1[1:0] = 01; see
Figure 15
AFC radio mode
referenced to 27 kHz
FM deviation;
50
µs
de-emphasis;
AM: f = 1 kHz; m = 54 %
[6]
2
-
300
mV
∆I
AFC
/∆f
RIF
α
AM
change of AFC current with RIF
frequency
AM suppression
0.85
35
1.05
46
1.25
-
µA/kHz
dB
Digital TV signal processing
Digital direct IF
V
o(dif)(p-p)
peak-to-peak differential output
voltage
between pin OUT2A and
pin OUT2B
W4[7] = 0
W4[7] = 1
G
IF(max)
G
IF(cr)
PSRR
maximum IF gain
control range IF gain
power supply ripple rejection
residual spurious at nominal
differential output voltage
dependent on power supply
ripple
f
ripple
= 70 Hz
f
ripple
= 20 kHz
Digital low IF
V
o(dif)(p-p)
G
IF(max)
G
IF(cr)
f
synth
TDA9897_TDA9898_3
[7]
-
-
[8]
1.0
0.50
83
66
1.1
0.55
-
-
V
V
dB
dB
output peak-to-peak level to
input RMS level ratio
-
60
[8]
[8]
-
-
[7]
60
60
2
89
66
-
-
-
-
-
-
-
dB
dB
V
dB
dB
MHz
peak-to-peak differential output
voltage
maximum IF gain
control range IF gain
synthesizer frequency
between pin OUT1A and
pin OUT1B; W4[7] = 0
output peak-to-peak level to
input RMS level ratio
see
Table 35
and
Table 36
-
-
60
-
[8]
[8]
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 11 January 2008
5 of 103
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
