U2270B Datasheet, PDF (2/13 Pages) TEMIC Semiconductors – Read / Write Base Station IC

U2270B
Pin Description
GND ₁
16 HIPASS
Output ₂
15 RF
OE ₃
14 VS
Input ₄
13 Standby
MS ₅
CFE ₆
DGND 7
12 V_Batt
11 DV_S
10 ^VEXT
COIL2 ₈
9844
Figure 2. Pinning
9 ^COIL1
Block Diagram
DV_S
V_EXT
Pin Symbol
Function
1
GND Ground
2
Output Data output
3
OE Data output enable
4
Input Data input
5
MS Mode select coil 1: Common
mode / Differential mode
6
CFE Carrier frequency enable
7 DGND Driver ground
8 COIL 2 Coil driver 2
9 COIL 1 Coil driver 1
10
V_EXT External power supply
11
DV_S Driver supply voltage
12
V_Batt Battery voltage
13 Standby Standby input
14
V_S Internal power supply (5 V)
15
RF Frequency adjustment
16 HIPASS DC decoupling
V_S
V_Batt
COIL1
Power supply
=1
COIL2
DGND
Driver
Input
Low pass filter
&
Oscillator
Amplifier
HIPASS
&
Schmitt trigger
GND
OE
Figure 3.
Frequency
adjustment
Standby
MS
CFE
RF
Output
9692
2 (13)
TELEFUNKEN Semiconductors
Rev. A3, 13-Dec-96