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The TDK 5110 is a single chip ASK/ FSK transmitter for the frequency bands 868-870 MHz and 433-435 MHz. The IC offers a high level of integration and needs only a few external components. The device contains a fully integrated PLL synthesizer and a high efficiency power amplifier to drive a loop antenna. A special circuit design and an unique power amplifier design are used to save current consumption and therefore to save battery life. Additionally features like a power down mode, a low power detect, a selectable crystal oscillator frequency and a divided clock output are implemented.
The IC can be used for both ASK and FSK modulation.
TDK5110 Maximum Ratings
Parameter
Symbol
Limit Values
Unit
Remarks
Min
Max
Junction Temperature
TJ
-40
150
Storage Temperature
Ts
-40
125
Thermal Resistance
RthJA
230
K/W
Voltage at any pin excluding pin 14
Vpins
−0.3
VS + 0.3
V
Voltage at pin 14
Vpin14
−0.3
2 * VS
V
No ESD-Diode to VS
Current into pin 11
Ipin11
-10
10
mA
ESD integrity, all pins
VESD
-1
+1
kV
JEDEC Standard JESD22-A114-B
ESD integrity, all pins excluding pin 14
VESD
-2.5
+2.5
kV
JEDEC Standard JESD22-A114-B
Ambient Temperature under bias: TA = -40 to +125 Note: All voltages referred to ground (pins) unless stated otherwise. Pins 5, 12 and 13 are grounded.
TDK5110 Features
` fully integrated frequency synthesizer ` VCO without external components ` high efficiency power amplifier typically 10 dBm @ 3 V ` switchable frequency range 868-870/433-435 MHz ` ASK/FSK modulation ` low supply current typ. 13 mA@3V ` voltage supply range 2.1 - 4 V ` power down mode ` low voltage sensor ` selectable crystal oscillator 6.78 MHz/13.56 MHz ` programmable divided clock output for C ` low external component count
TDK5110 Typical Application
· Keyless entry systems · Remote control systems · Alarm systems · Communication systems