ATA8203/ATA8204/ATA8205
Industrial UHF ASK/FSK Receiver
DATASHEET
Features
●
Frequency receiving range of (3 versions)
●
f
0
= 312.5MHz to 317.5MHz or
●
f
0
= 431.5MHz to 436.5MHz or
●
f
0
= 868MHz to 870MHz
●
30dB image rejection
●
Receiving bandwidth
●
B
IF
= 300kHz for 315MHz/433MHz version
●
B
IF
= 600kHz for 868MHz version
●
Fully integrated LC-VCO and PLL loop filter
●
Very high sensitivity with power matched LNA
●
Atmel
®
ATA8203/ATA8204:
●
–107dBm, FSK, BR_0 (1.0Kbit/s to 1.8Kbit/s), Manchester, BER 10E-3
●
–113dBm, ASK, BR_0 (1.0Kbit/s to 1.8Kbit/s), Manchester, BER 10E-3
●
Atmel ATA8205:
●
–105dBm, FSK, BR_0 (1.0Kbit/s to 1.8Kbit/s), Manchester, BER 10E-3
●
–111dBm, ASK, BR_0 (1.0Kbit/s to 1.8Kbit/s), Manchester, BER 10E-3
●
High system IIP3
●
–18dBm at 868MHz
●
–23dBm at 433MHz
●
–24dBm at 315MHz
●
System 1-dB compression point
●
–27.7dBm at 868MHz
●
–32.7dBm at 433MHz
●
–33.7dBm at 315MHz
●
High large-signal capability at GSM band (blocking –33dBm at +10MHz,
IIP3 = –24dBm at +20MHz)
●
Logarithmic RSSI output
●
XTO start-up with negative resistor of 1.5kΩ
●
5V to 20V automotive compatible data interface
●
Data clock available for manchester and bi-phase-coded signals
●
Programmable digital noise suppression
●
Low power consumption due to configurable polling
9121D-INDCO-09/14
●
Temperature range –40°C to +85°C
●
ESD protection 2kV HBM, All pins
●
Communication to microcontroller possible using a single bi-directional data line
●
Low-cost solution due to high integration level with minimum external circuitry requirements
●
Supply voltage range 4.5V to 5.5V
Benefits
●
Low BOM list due to high integration
●
Use of low-cost 13MHz crystal
●
Lowest average current consumption for application due to self polling feature
●
Reuse of Atmel ATA5743 software
●
World-wide coverage with one PCB due to 3 versions are pin compatible
2
ATA8203/ATA8204/ATA8205 [DATASHEET]
9121D–INDCO–09/14
1.
Description
The Atmel
®
ATA8203/ATA8204/ATA8205 is a multi-chip PLL receiver device supplied in an SSO20 package. It has been
specially developed for the demands of RF low-cost data transmission systems with data rates from 1Kbit/s to 10Kbit/s in
Manchester or Bi-phase code. Its main applications are in the areas of aftermarket keyless entry systems, and tire pressure
monitoring systems, telemetering, consumer/industrial remote control applications, home entertainment, access control
systems, and security technology systems. It can be used in the frequency receiving range of f
0
= 312.5MHz to 317.5MHz,
f
0
= 431.5MHz to 436.5MHz or f
0
= 868MHz to 870MHz for ASK or FSK data transmission. All the statements made below
refer to 315MHz, 433MHz and 868.3MHz applications.
Figure 1-1. System Block Diagram
UHF ASK/FSK
Remote control transmitter
ATA8401/02/03/04/05
UHF ASK/FSK
Remote control receiver
ATA8203/
ATA8204/
ATA8205
Demod.
1 to 5
Control
Micro-
controller
XTO
PLL
Antenna
VCO
Antenna
IF Amp
PLL
XTO
Power
amp.
LNA
VCO
ATA8203/ATA8204/ATA8205 [DATASHEET]
9121D–INDCO–09/14
3
Figure 1-2. Block Diagram
CDEM
FSK/ASK
Demodulator
and Data Filter
RSSI
Limiter out
RSSI
Dem_out
Data
Interface
DATA
RSSI
SENS
AVCC
AGND
DGND
DVCC
POLLING/_ON
Sensitivity
reduction
Polling Circuit
and Control Logic
IF
Amp.
DATA_CLK
MODE
4. Order
f
0
= 1 MHz
FE
CLK
IC_ACTIVE
LPF
f
g
= 2.2 MHz
Standby
Logic
IF
Amp.
Loop
Filter
XTO
XTAL2
XTAL1
Poly-LPF
f
g
= 7 MHz
f
LC-VCO
:2
or :3
LNAREF
f
f
:2
or :4
:128
or :64
LNA_IN
LNAGND
LNA
4
ATA8203/ATA8204/ATA8205 [DATASHEET]
9121D–INDCO–09/14
2.
Pin Configuration
Figure 2-1. Pinning SSO20
SENS
IC_ACTIVE
CDEM
AVCC
TEST1
RSSI
AGND
LNAREF
LNA_IN
1
2
3
4
5
6
7
8
9
20 DATA
19 POLLING/_ON
18 DGND
17 DATA_CLK
ATA8203/
ATA8204/
ATA8205
16 MODE
15 DVCC
14 XTAL2
13 XTAL1
12 TEST3
11 TEST2
LNAGND 10
Table 2-1.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin Description
Symbol
SENS
IC_ACTIVE
CDEM
AVCC
TEST 1
RSSI
AGND
LNAREF
LNA_IN
LNAGND
TEST 2
TEST 3
XTAL1
XTAL2
DVCC
MODE
DATA_CLK
DGND
POLLING/_ON
DATA
Function
Sensitivity-control resistor
IC condition indicator: Low = sleep mode, High = active mode
Lower cut-off frequency data filter
Analog power supply
Test pin, during operation at GND
RSSI output
Analog ground
High-frequency reference node LNA and mixer
RF input
DC ground LNA and mixer
Do not connect during operating
Test pin, during operation at GND
Crystal oscillator XTAL connection 1
Crystal oscillator XTAL connection 2
Digital power supply
Selecting 315MHz/other versions
Low: 315MHz version (Atmel ATA8203)
High: 433MHz/868MHz versions (Atmel ATA8204/ATA8205)
Bit clock of data stream
Digital ground
Selects polling or receiving mode; Low: receiving mode, High: polling mode
Data output/configuration input
ATA8203/ATA8204/ATA8205 [DATASHEET]
9121D–INDCO–09/14
5
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