CC1020RSS Equivalent & Substitute Parts

Part Overview

The CC1020RSS is an RF transceiver IC designed for General ISM band applications below 1GHz, operating across 402MHz–470MHz and 804MHz–960MHz frequency ranges. This device integrates TxRx-only functionality with FSK, GFSK, and OOK modulation support, delivering 10dBm output power and -118dBm sensitivity. The CC1020RSS is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

CC1020RSS

Texas InstrumentsIn Stock: 3570CC1020RSS Datasheet

Current PartRFQ

CC1120RHBT

Texas InstrumentsIn Stock: 1532CC1120RHBT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CC1120RHBT qualifies as a substitute for the CC1020RSS based on the following alignment criteria:

Common RF Operating Parameters:

• Both devices operate within the General ISM < 1GHz frequency band
• Both support overlapping frequency ranges: CC1020RSS operates 402MHz–470MHz and 804MHz–960MHz; CC1120RHBT operates 410MHz–480MHz and 820MHz–960MHz, providing coverage of the primary CC1020RSS bands
• Both devices support FSK and GFSK modulation, which are core modulation schemes for the CC1020RSS

Physical and Electrical Compatibility:

• Both use 32-pin VQFN packages with exposed pads
• Both operate within compatible supply voltage ranges (CC1020RSS: 2.3V–3.6V; CC1120RHBT: 2V–3.6V)
• Both support SPI serial interface, enabling integration with existing host controllers
• Both maintain -40°C–85°C operating temperature range
• Both comply with ROHS3 and REACH standards

Key Substitution Limitation: The CC1120RHBT integrates an embedded MCU and provides enhanced performance (200kbps data rate vs. 153.6kBaud, 16dBm output vs. 10dBm, -127dBm sensitivity vs. -118dBm). However, the CC1120RHBT does not support UART interface, only SPI. Systems requiring UART connectivity must evaluate alternative solutions or implement protocol conversion.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The CC1020RSS is obsolete, while the CC1120RHBT is active. For new designs and long-term system support, the CC1120RHBT is the appropriate selection based on active product status and ongoing manufacturer support.

Compliance and Certification: Both devices maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications. The CC1120RHBT carries ECCN 5A991B classification versus CC1020RSS ECCN 5A991G; verify export control requirements for your application jurisdiction.

Interface Compatibility: Systems currently using UART communication with the CC1020RSS must implement SPI-only communication with the CC1120RHBT. Existing firmware utilizing UART protocols requires modification or external protocol conversion circuitry.

Thermal and Moisture Handling: The CC1120RHBT carries MSL-3 rating (168-hour moisture sensitivity limit) compared to CC1020RSS MSL-1 (unlimited). Storage and handling procedures must comply with MSL-3 requirements to prevent component degradation.

Frequently Asked Questions (FAQ)

Q: Can the CC1120RHBT directly replace the CC1020RSS in existing PCB layouts?

A: Physical pin compatibility exists for both 32-pin VQFN packages; however, package dimensions differ (CC1020RSS: 7x7mm; CC1120RHBT: 5x5mm). PCB footprints must be verified and potentially redesigned. Additionally, the CC1120RHBT integrates an embedded MCU, requiring firmware modifications if the original design relied on external microcontroller communication via UART.

Q: What are the frequency band differences between these devices?

A: The CC1020RSS operates 402MHz–470MHz and 804MHz–960MHz. The CC1120RHBT extends coverage to 164MHz–192MHz and 274MHz–320MHz while maintaining 410MHz–480MHz and 820MHz–960MHz operation. Both devices cover the primary ISM bands of the CC1020RSS, ensuring frequency compatibility for most applications.

Q: Is the CC1120RHBT suitable for applications requiring UART communication?

A: The CC1120RHBT supports SPI interface only. Applications requiring UART must either implement external SPI-to-UART conversion circuitry or redesign firmware to use SPI communication protocols.

Q: How do power consumption profiles compare?

A: The CC1020RSS draws 19.9mA in receive mode and 12.3mA–27.1mA in transmit mode. The CC1120RHBT draws 17mA–23mA in receive mode and 32mA–54mA in transmit mode. Transmit current is higher for the CC1120RHBT due to integrated MCU functionality and higher output power (16dBm vs. 10dBm).

Q: Are there modulation differences affecting system design?

A: The CC1020RSS supports FSK, GFSK, and OOK modulation. The CC1120RHBT adds 2FSK, 2GFSK, 4FSK, 4GFSK, and MSK modulation options. Existing designs using FSK, GFSK, or OOK remain compatible; advanced modulation schemes are available only with the CC1120RHBT.

Q: What storage and handling precautions apply to the CC1120RHBT?

A: The CC1120RHBT carries MSL-3 rating, requiring storage below 30°C and 60% relative humidity, with a 168-hour floor life limit after moisture exposure. The CC1020RSS (MSL-1) has unlimited floor life. Implement appropriate moisture control procedures during component storage and assembly.