ucb1200 NXP Semiconductors, ucb1200 Datasheet - Page 41

• Manufacturer Part Number: ucb1200
• Description: Advanced Modem/audio Analog Front-end
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC CHARACTERISTICS
V
f
1998 Jul 22
i(sibclk)
Audio Input; notes 1 and 2
f
V
V
Z
Z
G
N
G
E
RES
LE
THD
S/N
PBRR
SBR
D
Audio Output; notes 4 and 5
V
E
V
N
SSD
sa
i
(18-20)
I(RMS)
I(BIAS)
G
O(RMS)
offset
O(BIAS)
step
step
offset
step
Advanced modem/audio analog front-end
step
v
(d)(ADC)
SYMBOL
= V
= 9.216 MHz; unless otherwise specified
SSA1
= V
SSA2
audio sample frequency
input voltage (RMS value) 0 dB gain setting
DC bias voltage
input impedance
impedance MICGND -
VSSA1
gain step size
number of gain settings
gain
gain error
resolution
ADC differential linearity
error
total harmonic distortion
signal-to-noise ratio
pass-band ripple rejection f
stop-band rejection
digital offset
output voltage (RMS
value)
offset error (peak-to-peak
value)
DC bias voltage
attenuation step size
(analog section)
number of attenuation
steps
= V
SSA3
PARAMETER
= 0 V; V
DDD
= V
DDA1
.
MICP input
(AUD_GAIN=011111)
each gain step
input gain = 0 dB
(AUD_GAIN = 00000);
input signal = 1 mVrms
input gain = 22.5 dB
(AUD_GAIN[n] = 01111);
AC coupling enabled
(AUD_OFF_CAN = 1);
input gain = 0 dB
(AUD_GAIN = 00000)
input signal = 1mV (RMS);
input gain = 22.5 dB
(AUD_GAIN[n] = 01111);
f
no signal applied to MICP
attenuation = 0 dB,
differentially measured
between SKPRN and
SPRKP
SPKRP/SKPRN
pla
sha
< f
= V
< f
sig
CONDITIONS
sig
DDA2
< f
< 20 kHz
41
pha
= 3.3 V
(3)
(3)
; T
90
1.35
20
1
15
50
25
50
1.0
1.2
2.5
amb
1
MIN.
=25 C; V
100
1.5
32
22.5
12
1.25
3.0
24
TYP.
I(ref)
= 1.2 V;
Product specification
26
125
1.5
-
200
2
28
1
1
-40
-26
1.2
50
1.5
100
1.6
3.5
UCB1200
MAX.
kHz
mV
V
k
dB
dB
dB
bit
LSB
dB
dB
dB
dB
dB
dB
LSB
V
mV
V
dB
UNIT