Key facts
- Brand
- Melexis
- Model
- TH7122
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-07
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Melexis TH7122 Datasheet
The TH7122 is a single‑chip FSK/FM/ASK transceiver IC designed for low‑power, multi‑channel programmable or stand‑alone half‑duplex data transmission. It operates in automotive, industrial‑scientific‑medical (ISM) and short‑range device applications across a wide frequency range.
The document provides detailed specifications, pin definitions, functional schematics, block diagrams, user‑mode features, register descriptions, application circuit examples, and reliability information for designers integrating the TH7122 into their systems.
Melexis TH7122 specifications
| Frequency range (programmable mode) | 300 MHz to 930 MHz |
|---|---|
| Extended frequency range (external VCO) | 27 MHz to 930 MHz |
| Power supply range | 2.2 V to 5.5 V |
| Operating temperature range | -40 °C to +85 °C |
| Standby current | 50 nA |
| Receive current (low gain) | 6.5 mA |
| Transmit current (at -2 dBm) | 12 mA |
| Adjustable RF output power | -20 dBm to +10 dBm |
| Sensitivity (FSK) | -105 dBm (180 kHz BW) |
| Sensitivity (ASK) | -107 dBm (180 kHz BW) |
| Maximum data rate (direct VCO modulation) | 115 kbps NRZ |
| Input frequency acceptance | +10 kHz to +150 kHz |
Source: Melexis TH7122 Datasheet
All Melexis TH7122 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What frequency range does the TH7122 support?
The TH7122 operates from 300 MHz to 930 MHz in programmable user mode and can be extended down to 27 MHz with an external VCO varactor diode.
From: Melexis TH7122 Datasheet
What is the standby current of the TH7122?
The standby current is specified as 50 nA.
From: Melexis TH7122 Datasheet
What frequency range does the TH71221 cover?
It operates from 300 MHz up to 930 MHz.
What supply voltage is required for the TH71221?
The device works with a supply voltage between 2.2 V and 5.5 V.