ADF7021
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ADF7021

High Performance Narrowband ISM Transceiver IC

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Part Details
Part Models 3
1ku List Price Starting From $3.38
Features
  • Low power, high performance, narrowband transciever
  • Frequency Bands: 80-650MHz and 862-940MHz
  • Modulation schemes: 2FSK, 3FSK, 4FSK
  • Spectral shaping: Gaussian and Raised Cosine Filtering
  • Automatic PA ramp
  • Data rates supported: 0.05kps to 25kbps
  • Programmable output power: –16dBm to +13dBm
  • Low IF architecture with programmable IF bandwidths of 12.5/18.5/25kHz
  • 2.3V to 3.6V Power Supply
  • Receiver sensitivity: –123dBm @ 1kbps FSK
  • Fully automatic frequency control loop (AFC) compensates for lower tolerance crystals
  • High Accuracy digital RSSI and integrated Tx/Rx switch
Additional Details
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The ADF7021 is a low power, highly integrated 2FSK/3FSK/4FSK transceiver. It is designed to operate in the narrowband, license-free ISM bands and licensed bands in the 80 MHz to 650 MHz and 862 MHz to 940 MHz frequency ranges. It has both Gaussian and raised cosine data filtering options to improve spectral efficiency for narrowband applications.

It is suitable for circuit applications targeted at European ETSI-EN 300-220, the Japanese ARIB STD-T67, the Chinese Short Range Device regulations, and the North American FCC Part 15, Part 90, and Part 95 regulatory standards. A complete transceiver can be built using a small number of external discrete components, making the ADF7021 very suitable for price-sensitive and area-sensitive applications.

The transmit section contains a voltage controlled oscillator (VCO) and a low noise fractional-N PLL with output resolution of <1 ppm. This frequency-agile PLL allows the ADF7021 to be used in frequency hopping spread spectrum (FHSS) systems. The VCO operates at twice the fundamental frequency to reduce spurious emissions and frequency pulling problems. The transmitter output power is programmable in 63 steps from −16 dBm to +13 dBm and has an automatic power ramp control to prevent spectral splatter and help meet regulatory standards. The transceiver RF frequency, channel spacing, and modulation are programmable using a simple 3-wire interface. The device operates with a power supply range of 2.3 V to 3.6 V and can be powered down when not in use.

A low IF architecture is used in the receiver (100 kHz), minimizing power consumption and the external component count while avoiding interference problems at low frequencies. The IF filter has programmable bandwidths of 12.5 kHz, 18.75 kHz, and 25 kHz. The ADF7021 supports a wide variety of programmable features including Rx linearity, sensitivity, and IF bandwidth, allowing the user to trade off receiver sensitivity and selectivity against current consumption, depending on the application. The receiver also features a patent-pending automatic frequency control (AFC) loop with programmable pull-in range, allowing the PLL to track out the frequency error in the incoming signal.

An on-chip ADC provides readback of an integrated temperature sensor, an external analog input, the battery voltage, and the RSSI signal, which provides savings on an ADC in some applications. The temperature sensor is accurate to ±10°C over the full operating temperature range of −40°C to +85°C. This accuracy can be improved by doing a 1-point calibration at room temperature and storing the result in memory.

Part Models 3
1ku List Price Starting From $3.38

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADF7021BCPZ
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ADF7021BCPZ-RL
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ADF7021BCPZ-RL7
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Product Lifecycle

PCN

Nov 10, 2022

- 22_0277

Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages

Aug 1, 2016

- 16_0035

Assembly Relocation of Select LFCSP, Mini-LFCSP and LFCSP Side Solderable Products to STATS ChipPAC China Jiangyin

May 23, 2014

- 13_0233

Assembly Transfer of Select 6x6 and 7x7mm LFCSP Products to STATS ChipPAC China.

ADF7021BCPZ

PRODUCTION

ADF7021BCPZ-RL

PRODUCTION

ADF7021BCPZ-RL7

PRODUCTION

Oct 26, 2011

- 11_0020

Conversion of Select Sizes of LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to StatsChippac Malaysia.

Jun 14, 2011

- 11_0109

Addition of STATSChipPAC, Malaysia as an Alternate Test Site for Select LFCSP products

ADF7021BCPZ

PRODUCTION

ADF7021BCPZ-RL

PRODUCTION

ADF7021BCPZ-RL7

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Nov 10, 2022

- 22_0277

arrow down

Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages

Aug 1, 2016

- 16_0035

arrow down

Assembly Relocation of Select LFCSP, Mini-LFCSP and LFCSP Side Solderable Products to STATS ChipPAC China Jiangyin

May 23, 2014

- 13_0233

arrow down

Assembly Transfer of Select 6x6 and 7x7mm LFCSP Products to STATS ChipPAC China.

ADF7021BCPZ

PRODUCTION

ADF7021BCPZ-RL

PRODUCTION

ADF7021BCPZ-RL7

PRODUCTION

Oct 26, 2011

- 11_0020

arrow down

Conversion of Select Sizes of LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to StatsChippac Malaysia.

Jun 14, 2011

- 11_0109

arrow down

Addition of STATSChipPAC, Malaysia as an Alternate Test Site for Select LFCSP products

ADF7021BCPZ

PRODUCTION

ADF7021BCPZ-RL

PRODUCTION

ADF7021BCPZ-RL7

PRODUCTION

Evaluation Kit

Evaluation Kits 1

Tools & Simulations

Tools & Simulations 1

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