ucb1300 NXP Semiconductors, ucb1300 Datasheet - Page 46

• Manufacturer Part Number: ucb1300
• Description: Advanced Modem/audio Analog Front-end
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2000 Jun 26
t
Eidle
ADC; notes 11 and 12
RES
V
Z
I
LE
LE
t
t
t
t
t
t
On-chip reference circuit
V
t
STRTU
LI
en(ADC)
d(s)
conv
track
adcsync
sibwrite
STRTU
light_touch
i
I(AD0-AD3)
i(ref)
Advanced modem/audio analog front-end
(d)(ADC)
(i)(ADC)
SYMBOL
start up time of touch
screen bias voltage
generator
Idle pressure reading
Pressure reading:
light-touch - 1.25xEidle
resolution
full scale AD0 - AD3
inputs
input impedance
input leakage current
ADC differential linearity
error
ADC integral linearity
error
ADC enable time
sampling delay
conversion time
tracking time
ADCSYNC pulse width
control register update
after SIBSYNC falling
edge
reference voltage applied
to VREFBYP
start-up time of internal
reference voltage circuit
PARAMETER
(18)
pressure mode selected,
open (no current drawn)
pressure mode selected,
2.2k for light touch, open
for idle
V
V
5 - 95% of full scale
non synchronization mode;
no changing ADC
multiplexer settings
non synchronization mode;
changing ADC multiplexer
settings
synchronization mode;
rising edge ADCSYNC to
sample moment
ADO
AD3
= 7.5 V
= V
CONDITIONS
AD1
46
= V
AD2
=
-
40
-
7.0
50
-
-
5
-
-
t
-
5t
5
-
1.0
-
SIBCLK
SIBCLK
MIN.
-
30
250
10
7.5
75
-
-
-
4t
51t
102t
49t
-
65t
1.2
-
SIBCLK
TYP.
SIBCLK
SIBCLK
SIBCLK
SIBCLK
Product specification
25
120
-
8.0
100
10
2
3
-
-
-
1.5t
-
-
-
1.4
50t
UCB1300
MAX.
SIBCLK
SIBCLK
LSB
LSB
bit
V
k
LSB
LSB
ns
ns
ns
ns
ns
ns
ns
V
ns
UNIT
s
A
s