U2270B_08 Datasheet, PDF (15/18 Pages) ATMEL Corporation – Read/Write Base Station

U2270B
8. Electrical Characteristics
All voltages are referred to GND (Pins 1 and 7)
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Data output
- Collector emitter
- Saturation voltage
I_out = 5 mA
2
V_CEsat
400
mV
Data output enable
- Low-level input voltage
- High-level input voltage
Data input
- Clamping level low
- Clamping level high
- Input resistance
- Input sensitivity
Driver polarity mode
- Low-level input voltage
- High-level input voltage
Carrier frequency enable
- Low-level input voltage
- High-level input voltage
Operating current
3
V_il
V_ih
f = 3 kHz (square wave)
Gain capacitor = 100 nF
V_il
4
V_ih
R_in
S_IN
5
V_il
V_ih
6
V_il
V_ih
10,
5V application without load
connected to the coil driver
11, 12
and
I_S
14
0.5
V
2.4
V
2
3.8
220
10
V
V
kΩ
mV_pp
V
2.4
0.2
V
V
3.0
0.8
V
4.5
9
mA
Standby current
V_S
- Supply voltage
- Supply voltage drift
- Output current
Driver output voltage
- One-rail operation
- Battery-voltage operation
V_EXT
- Output voltage
- Supply voltage drift
- Output current
- Standby output current
Standby input
- Low-level input voltage
- High-level input voltage
Oscillator
- Carrier frequency
12V application
I_L = ±100 mA
V_S, V_EXT, V_Batt, DV_S = 5V
V_Batt = 12V
IC active
Standby mode
RF resistor = 110 kΩ
(“Application 2” ), REM 1⁽¹⁾
12
I_St
30
70
µA
14
V_S
dV_s/dT
4.6
5.4
4.2
6.3
V
mV/K
I_S
1.8
3.5
mA
8, 9
V_DRV
V_DRV
2.9
3.6
4.3
V_PP
3.1
4.0
4.7
V_PP
V_EXT
4.6
5.4
6.3
V
10
dV_EXT/dT
4.2
mV/K
I_EXT
3.5
mA
I_EXT
0.4
mA
13
V_il
V_ih
3.1
0.8
V
V
f₀
121
125
129
kHz
Low-pass filter
- Cut-off frequency
Carrier frequency = 125 kHz
f_cut
7
kHz
Amplifier gain
C_HP = 100 nF
30
Note: 1. REM 1: In “Application 1” where the oscillator operates in free-running mode, the IC must be soldered free from distortion.
Otherwise, the oscillator may be out of bounds.
15
4684E–RFID–02/08