TH7122ENE Melexis Inc, TH7122ENE Datasheet - Page 2

• 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

Block Diagram
Disclaimer:
Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by
description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and
prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. This product is intended for use
in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-
support or life-sustaining equipment are specifically not recommended without additional processing by Melexis for each application. The information furnished by Melexis is believed to be
correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss
of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical
data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering of technical or other services.
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Applications
• General bi-directional half duplex digital data
• Tire Pressure Monitoring Systems (TPMS)
• Remote Keyless Entry (RKE)
• Networking solutions
Evaluation Board
RF signaling or analog signal communication
IN_LNA
26
OUT_PA
25
27
LNA
24
29
PA
ASK
PS_PA
28
FSK Application Circuit
30
21
(internal AFC Option)
TNK_LO
VCO
MIX
LO
counter
20
32
N
IF
VCC_PLL
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31
1
23
LF
2
IFA
22
RO
counter
7
VEE_PLL
R
TX_OUT
RX_IN
CB1
Combining
network
L1
10
1.5pF
RO
RO
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C1
LTX0
CRX0
CTX0
CB2
C2
FSK
11
• Low-power telemetry systems
• Home and building automation
• Alarm and security systems
• Garage door openers
• Active RFID tags
MIX
19
3
CTX4
25
26
27
28
29
30
32
31
RPS
IN_DEM
Demodulator
OUT_LNA
GAIN_LNA
IN_MIX
VEE_IF
OUT_MIX
OUT_PA
IN_LNA
VEE_LNA
FSK
9
CF2
CB5
CB4
1
SW1
PKDET
12
2
Control Logic
TH7122
3
13
RP
RF
CF1
C3
4
L0
15
6
OUT_DEM
5
SW2
CERDIS
16
6
© 2006 Melexis NV. All rights reserved.
C4
CB6
200k
17
7
RE/SCLK
VCC_DIG
ASK/FSK
C5
FSK_SW
bias
IN_DTA
CB0
8
RO
detect
18
OA2
OA1
Lock
SCI
16
15
14
13
12
10
VEE_RO
11
9
INT2/PDO
OUT_DTA
14
SDEN
SCLK
CB7
SDTA
INT1
CX2
XTAL CX1
4
5
8
VCC
VCC
3wire bus
VCC
output
FSK
input
FSK