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參數資料
| 型號： | TH7120 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 300 to 930MHz FSK/FM/ASK Transceiver |
| 中文描述： | 300至930MHz FSK信號/調頻/調幅器 |
| 文件頁數： | 2/28頁 |
| 文件大?。?/td> | 718K |
| 代理商： | TH7120 |
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TH7120
300 to 930MHz
FSK/FM/ASK Transceiver
3901007120
Rev. 005
Page 2 of 28
Data Sheet
Jan. 2002
FS1/LD
0
General Desc ription
The TH7120 is a single chip FSK/FM/ASK transceiver IC. It is designed to operate in low-power multi-channel
programmable or single-channel stand-alone, half-duplex data transmission systems. It can be used for ISM,
SRD or any other application operating in the frequency ranging of 300 MHz to 930 MHz.
The TH7120 transceiver IC consists of the following building blocks:
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Low-noise amplifier (LNA) for high-sensitivity RF signal reception with switchable gain
Mixer (MIX) for RF-to-IF down-conversion
IF amplifier (IFA) to amplify and limit the IF signal and for RSSI generation
Phase-coincidence demodulator with external ceramic discriminator (FSK Demodulator)
Operational amplifier, connected to demodulator output (OA1)
Operational amplifier, integrator circuit at FSK-AFC mode (OA2)
Control logic with 3wire bus serial control interface (SCI)
Reference oscillator (RO) with external crystal
Reference divider (R counter)
Programmable divider (N/A counter)
Phase-frequency detector (PFD)
Charge pump (CP)
Voltage control oscillator (VCO) with internal varactor
Power amplifier (PA) with adjustable output power
The transceiver can be used either as a 3wire-bus-controlled programmable or as a stand-alone fixed-
frequency device. After power up, the transceiver is set to fixed-frequency mode. In this mode, pins
FS0/SDEN and FS1/LD must be connected to V
EE
or V
CC
in order to set the desired frequency of operation.
The logic levels at pins FS0/SDEN and FS1/LD must not be changed after power up in order to remain in
fixed-frequency mode.
Channel frequency
433.92 MHz
868.3 MHz
315.0 MHz
915.0 MHz
FS0/SDEN
1
0
0
1
1
0
1
After the first logic level change at pin FS0/SDEN, the transceiver enters into programmable mode while pin
FS1/LD is now a PLL lock detector output. In this mode, the user can set any PLL frequency or mode of op-
eration by the SCI.
In the fixed-frequency mode, the user can set the transceiver to Standby, Receive, Transmit
or Idle
(only PLL
synthesizer active) mode via control pins RE/SCLK and TE/SDTA.
Operation mode
Standby
Receive
Transmit
Idle
RE/SCLK
0
0
1
0
0
1
1
1
TE/SDTA
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相關代理商/技術參數 |
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| TH7121 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:300 to 930MHz FSK/FM/ASK Transceiver |
| TH7122 | 制造商:MELEXIS 制造商全稱:Melexis Microelectronic Systems 功能描述:27 to 930MHz FSK/FM/ASK Transceiver |
| TH71221 | 制造商:MELEXIS 制造商全稱:Melexis Microelectronic Systems 功能描述:27 to 930MHz FSK/FM/ASK Transceiver |
| TH71221ELQ | 制造商:MELEXIS 功能描述:TRX FSK/FM/ASK 27-930MHZ 32QFN 制造商:Melexis Semiconductors 功能描述:TRX, FSK/FM/ASK, 27-930MHZ, 32QFN 制造商:MELEXIS 功能描述:TRX, FSK/FM/ASK, 27-930MHZ, 32QFN; Frequency Min:300MHz; Frequency Max:930MHz; Modulation Type:AM, FM, FSK; Sensitivity dBm:-107dBm; Data Rate:115Kbps; Supply Voltage Min:2.2V; Supply Voltage Max:5.5V; RF IC Case Style:QFN; No. of ;RoHS Compliant: Yes |
| TH71221ELQ-BAA-000-RE | 制造商:Melexis Semiconductors 功能描述:IC TXRX FSK/FM/ASK 32QFN 制造商:Melexis Semiconductors 功能描述:TH71221 Series 300 to 930 MHz 115 kbps SMT FSK/AM/ASK Transceiver - QFN-32 |
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