TH7122ENE Melexis Inc, TH7122ENE Datasheet - Page 6

• Manufacturer Part Number: TH7122ENE
• Description: IC TXRX 930MHZ FSK/FM/ASK 32LQFP
• Manufacturer: Melexis Inc

Specifications of TH7122ENE

• Frequency: 300MHz ~ 930MHz
• Data Rate - Maximum: 115Kbps
• Modulation Or Protocol: ASK, FM, FSK
• Applications: Alarm and Security Systems, RKE, TPMS
• Power - Output: -10dBm ~ 11dBm
• Sensitivity: -105dBm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Current - Receiving: 14mA
• Current - Transmitting: 23mA @ 10dBm
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Transmitting Current: 12mA
• Data Rate: 115Kbps
• Frequency Range: 300MHz To 930MHz
• Modulation Type: AM, FM, FSK
• Sensitivity Dbm: -105dBm
• Rf Ic Case Style: LQFP
• No. Of Pins: 32
• Supply Voltage: RoHS Compliant
• Output Power: 10dBm
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TH7122.3; TH7122ENETR

2
39010 07122
Rev. 010
Pin No.
1
2
3
4
5
6
7
Pin Definitions and Descriptions
OUT_DEM analog I/O
INT2/PDO
IN_DEM
VCC_IF
IN_IFA
Name
RSSI
INT1
analog I/O
I/O Type
supply
output
output
input
input
INT1
5
bias
OA2
IN_DEM
IN_IFA
3
RSSI
1
VEE
VCC
VEE
VCC
7
120
INT2/PDO
Functional Schematic
Page 6 of 44
4
VCC
VEE
OA1
VCC
50
1.5p
90k
120
60k
VCC
VEE
200k
10p
10µA
VCC
VEE
2.2k
140µA
VEE
1k
+
10p
VEE
VCC
100µA
VCC
VEE
VCC
OUT_DEM
FSK/FM/ASK Transceiver
6
IF amplifier input, approx.
2 kΩ single-ended
positive supply of LNA, MIX,
IFA, FSK Demodulator, PA,
OA1 and OA2
IF amplifier output and de-
modulator input, connection
to external ceramic discrimi-
nator or LC tank
OA2 output or peak detector
output, high impedance in
transmit and idle mode
inverting inputs of OA1 and
OA2
demodulator output and
non-inverting OA1 input,
high impedance in transmit
and idle mode
RSSI output, approx. 31 kΩ
Description
27 to 930MHz
TH7122
Data Sheet
Feb/09