U2761B Datasheet, PDF (5/11 Pages) TEMIC Semiconductors – DECT RF / IF IC

Electrical Characteristics (continued)
Test conditions: V_S = 3.0 V, T_amb = 25°C, unless otherwise specified
Parameters
Test Conditions / Pins
ÁÁÁ ÁÁÁÁÁ _{Ramp generator}
Pins 13 and 14
ÁÁÁÁ Á ÁÁ _{Min output voltage}
Accord to PA RAMP input
ÁÁÁÁÁ ÁÁÁÁÁÁÁ _{Max output voltage}
Accord. to PA RAMP input
Á Rise time
C_RAMP = 270 pF at Pin 14
ÁÁ ÁÁÁÁÁÁÁ ^{Fall time}
C_RAMP = 270 pF at Pin 14
Logic input levels (RX_ON, TX_ON) Pins 15 and 16
Á ÁÁÁÁÁÁÁÁ ÁÁÁÁ _{High input level}
= ‘1’
ÁÁÁÁ _{Low input level}
= ‘0’
ÁÁÁÁ _{High input current}
= ‘1’
ÁÁ ^Symbol
V_min
V_max
t_r
t_f
V_iH
V_iL
I_iH
Á^Min
1.5
–5
Low input current
Power / standby
ÁÁÁÁ _{Power up high input level}
ÁÁÁÁÁÁÁÁÁÁÁÁ _{Standby low input level}
ÁÁÁ ^{Á = ‘0’}
PU = 1’
PU = ‘0’
Pin 2
IiL
–5
ÁÁÁ^VPU
V_PU,OFF
2.0
Power-up high input current PU = ‘1’
V_PU = 3 V,
V_PU = 5 5 V
I_PU
20
60
Standby low input current
Settling time
ÁÁ ^{VS = 0 –> active operation}
Settling time
standby –> active operation
PU = ‘0’
Switched
ÁÁÁ ^{VPU = 0 V,}
V_PU = 0.5 V
VS = 0 to VS = 3 V
Switched
PU = 0 to PU = 1
ÁÁ IPU,OFF
t_soa
t_ssa
Settling time
Switched
active operation –> standby VS = 3 V to VS = 0
t_sas
U2761B
Á Á Á ^{Typ. Max}
Unit
02
V
1.95
V
5
µs
5
µs
V
05
V
5
µA
5
µA
V
07
V
30
80
40
100
µA
0.1
1
µA
< 10
µs
< 10
µs
<2
µs
Active Blocks Corresponding to RX / TX
Logic
Active Parts
PU RX_ON TX_ON OP Demo- IF amplifiers IR mixer RSSI RX switch TX switch TX driver Ramp
dulator
generator
TX mode 1
0
1
off off
off
off
off
off
on
on
on
RX mode 1
1
0
on on
on
on
on
on
off
off
off
RSSI
1
1
1
off off
on
on
on
on
off
off
off
Standby 0
X
X
off off
off
off
off
off
off
off
off
1
0
0
off off
off
off
off
off
on
off
off
TEMIC Semiconductor
5 (11)
Rev. A4, 10-Mar-98
Preliminary Information