參數(shù)資料
型號： PCA5007
廠商： NXP Semiconductors N.V.
英文描述： Pager baseband controller
中文描述： 傳呼機(jī)基帶控制器
文件頁數(shù)： 80/112頁
文件大?。?/td> 604K
代理商： PCA5007
1998 Oct 07
80
Philips Semiconductors
Product specification
Pager baseband controller
PCA5007
Notes
1.
DC/DC converter configured with inductor of L = 470
μ
H, SRL = 5
, input capacitance of C
i
= 4.7
μ
F, ESR = 0.5
,
V
DD
output capacitor C
o
= 4.7
μ
F, ESR = 0.5
, R
BAT
< 1
.
The required V
BAT
for starting the circuit after connecting it to the battery is 1.1 V. But once in place, the battery can
be used until it is discharged to 0.9 V.
This parameter is not tested during production; it is covered by other measurements.
The accuracy of the voltage is defined by maximum offset and ripple voltage. DC offset is defined by the accuracy
of the internal band gap reference and the offset of comparators, whereas the ripple voltage is defined by the limits
of the allowed voltage window of the regulated V
DD
.
The ripple in standby mode is defined by V
BAT
, L, t
n
and ESR (see Table 54).
PCA5007 set to standby mode by software: 76.8 kHz oscillator running, DC/DC converter running in standby mode,
all timers/counters disabled except RTC, microcontroller Idle, all outputs open-circuit, no supply current delivered to
external circuits.
This parameter depends on external components and is not tested during production; hence no guarantee.
PCA5007 set to receive mode by software: 76.8 kHz and 6 MHz oscillator running, DC/DC converter running in
normal mode, wake-up counter, clock compensation, watchdog timer, T0 and T1 enabled, demodulator set to direct
input data, AFC disabled, microcontroller Idle, all outputs open-circuit, no supply current delivered to external circuits.
R
s
= total series resistance = R
BAT
+ SRL + R
DS(on)
+ ESR.
10. The minimum supply voltage is determined by the start-up sequence of the device. When the start-up sequence is
completed, the supply voltage can be lowered to 1.8 V.
2.
3.
4.
5.
6.
7.
8.
9.
11. The microcontroller operates with approximately1.9 million instructions per second at V
DD
= 2.2 V. The current
consumption at this supply voltage is 0.7 mA/MIPS (peripheral blocks as e.g. timers, DC/DC converter, I
2
C-bus,
UART, demodulator etc., are excluded). The current required from V
DD
is then 1.35 mA (typ.). This scales to
V
BAT
sunk from V
BAT
.
12. In mass program mode the current can increase to 100 mA.
13. This parameter is not tested during production; it is guaranteed by design.
R
L(DAC)
allowed resistive load at
DAC output
allowed capacitive load at
DAC output
AFCOUT source current
10
k
C
L(DAC)
50
pF
I
source
V
DD
= 2.2 V;
V
AFCOUT
= V
DD
0.4 V;
code = 111111
V
DD
= 2.2 V;
V
AFCOUT
= 0.4 V;
code = 000000
895
100
μ
A
I
sink
AFCOUT sink current
10
25
μ
A
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
I
BAT
V
I
DD
×
2.5 mA
=
=
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