TEA6848H Просмотр технического описания (PDF) - Philips Electronics
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TEA6848H
Philips Electronics
TEA6848H Datasheet PDF : 63 Pages
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Philips Semiconductors
New In Car Entertainment car radio tuner IC with
Precision Adjacent Channel Suppression (NICE-PACS)
Product specification
TEA6848H
11 AC CHARACTERISTICS
VDDA(n) = VMIX1OUT1 = VMIX1OUT2 = VAMMIX2OUT1 = VAMMIX2OUT2 = 8.5 V; VDDD = VDDA5 = 5 V; Tamb = 25 °C; tested in the
circuit of Figs 10 and 11; all AC values are given in RMS; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Voltage controlled oscillator
fosc
oscillator frequency
C/N
carrier-to-noise ratio
RR
ripple rejection ∆--f--fo--o-s--sc--c
Crystal oscillator
fxtal
crystal frequency
C/N
carrier-to-noise ratio
fosc = 200 MHz; ∆f = 10 kHz
162.9 −
−
97
fripple = 100 Hz;
92
99
VDDA4(ripple) = 100 mV (RMS);
fosc = 200 MHz
−
fxtal = 20.5 MHz; ∆f = 10 kHz
−
20.5
112
248.2
−
−
MHz
-d----B----c--
Hz
dB
−
MHz
−
-d----B----c--
Hz
CIRCUIT INPUTS: PINS XTAL1, XTALGND AND XTAL2
Vo(osc)(rms)
oscillator output voltage
(RMS value)
note 1
80
100
VXTAL1, VXTAL2
Ri
DC bias voltage
real part of input
impedance
1.7
2.1
VXTAL1 − VXTAL2 = 1 mV; note 1 −250 −
Ci
input capacitance
note 1
8
10
Synthesizer
160
mV
2.5
V
−
Ω
12
pF
PROGRAMMABLE DIVIDER
Nprog
programmable divider ratio
512
∆Nstep
programmable divider step
−
size
CHARGE PUMP: PIN CPOUT
Isink(cp1)l
Isource(cp1)l
Isink(cp1)h
low charge pump 1 sink
current
0.4 V < VCPOUT < 7.6 V;
−
data byte 3: bit 0 = 0, bit 1 = 1,
bit 2 = 1 for FM weather band;
fVCO > fref × divider ratio
low charge pump 1 source 0.4 V < VCPOUT < 7.6 V;
−
current
data byte 3: bit 0 = 0, bit 1 = 1,
bit 2 = 1 for FM weather band;
fVCO < fref × divider ratio
high charge pump 1 sink 0.4 V < VCPOUT < 7.6 V;
−
current
data byte 3: bit 0 = 1, bit 1 = 1,
bit 2 = 1; AM stereo mode;
VCO divider = 10 (LW and MW);
fVCO > fref × divider ratio
−
1
300
−300
1
32 767
−
−
µA
−
µA
−
mA
2004 Nov 12
13
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