U2270B Datasheet, PDF (11/13 Pages) TEMIC Semiconductors – Read / Write Base Station IC

U2270B
Electrical Characteristics
Test conditions (unless otherwise specified): V_Batt = 12 V, T_amb = –40 to 105_C
Parameters
Test Conditions / Pins
Symbol Min. Typ. Max.
Unit
Data output
– collector emitter
saturation voltage
I_out = 5 mA
Pin 2
V_CEsat
400
mV
Data output enable
Pin 3
– low level input voltage
– high level input voltage
V_il
V_ih
2.4
0.5
V
V
Data input
Pin 4
– clamping level low
V_il
2
V
– clamping level high
– input resistance
V_ih
R_in
3.8
220
kVW
– input sensitivity
f = 3 kHz (squarewave)
10
mV
gain capacitor = 100 nF
pp
Driver polarity mode
Pin 5
– low level input voltage
V_il
– high level input voltage
V_ih
Carrier frequency enable
Pin 6
– low level input voltage
V_il
– high level input voltage
V_ih
Operating current
Pin10, 11, 12 and 14
I_S
5 V application without
load connected to the coil
driver
Standby current
Pin 12
I_St
12 V application
0.2
V
2.4
V
0.8
V
3.0
V
4.5
9
mA
30
70
mA
V_S
– Supply voltage
– Supply voltage drift
Pin 14
V_S
4.6
5.4
dV_s/dT
4.2
– Output current
I_S
1.8
3.5
Driver output voltage
I_L = ±100 mA
– One rail operation
V_S, V_EXT, V_Batt, DV_S = 5 V V_DRV
2.9
3.6
– Battery voltage operation V_Batt = 12 V Pins 8 and 9 V_DRV
3.1
4.0
Vext
Pin 10
– Output voltage
– Supply voltage drift
– Output current
– Standby output current
IC active
standby mode
V_EXT
4.6
5.4
dV_EXT/dT
4.2
I_EXT
3.5
I_EXT
0.4
Standby input
Pin 13
– low level input voltage
– high level input voltage
Oscillator
W RF-resistor = 110 k
V_il
V_ih
3.1
– Carrier frequency
(application 2), REM 1.
f₀
121
125
Low pass filter
– Cut off frequency
Carrier freq. = 125 kHz
f_cut
7
Amplifier
– Gain
C_HP = 100 nF
30
Schmitt trigger
– Hysteresis voltage
100
6.3
V
mV/K
mA
4.3
V_PP
4.7
V_PP
6.3
V
mV/K
mA
mA
0.8
V
V
129
kHz
kHz
mV
REM 1.: In application 1. where the oscillator operates in the free running mode, the IC must be soldered free from distortion. Otherwise,
the oscillator frequency may be out of bounds.
TELEFUNKEN Semiconductors
Rev. A3, 13-Dec-96
11 (13)