ADF7021: High Performance Narrowband ISM Transceiver IC
The ADF7021 is a low power, highly integrated 2FSK/3FSK/4FSK transceiver. It is designed to operate in the narrow-band, license-free ISM bands and licensed bands in the 80 MHz to 650 MHz and 862 MHz ...More
ADF7021 Silicon Anomaly Sheet Available (pdf, 73,728 bytes) This anomaly list describes the known bugs, anomalies, and workarounds for the ADF7021 transceiver.
ADF7021: High Performance Narrowband ISM Transceiver IC
Product Description
The ADF7021 is a low power, highly integrated 2FSK/3FSK/4FSK transceiver. It is designed to operate in the narrow-band, 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 narrow-band 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 tempera¬ture 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.
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
Diagrams
- Enlarge
- Обозначения и трафареты для печатной платы
Functional Block Diagram for ADF7021
High Performance Narrowband ISM Transceiver IC
Functional Block Diagram for ADF7021
| Part# | Modulation Mode | Output Frequency Range | Maximum Data Rate (kbps) | Programmable Output Power | +10dBm Pwr Consumption | Package | Price* (1000-4999) |
|---|---|---|---|---|---|---|---|
| ADF7010 | FSK/ASK/GFSK | 902-928 MHz | 76 | -20dBm to +10dBm | 30mA | 24-Lead Tssop | $1.69 |
| ADF7011 | FSK/ASK/GFSK | 433-435MHz, 866-870MHz | 76 | -20dBm to +10dBm | 30mA | 24-Lead Tssop | $1.69 |
| ADF7012 | FSK/ASK/GFSK | 50-1000 MHz | 150 | -16dBm to +13dBm | 21mA | 24-Lead Tssop | $1.52 |
| ADF7020 | FSK/ASK/GFSK | 431-478 MHz, 862-956 MHz | 200 | -16dBm to +13dBm | 19mA | 48-Lead CSP | $2.23 |
| ADF7020-1 | ASK/FSK/OOK, FSK/ASK/GFSK | 135MHz to 650MHz. | 200 | -16dBm to +13dBm | 27mA | 48-Lead CSP | $2.23 |
| ADF7021 | 2FSK, 3FSK, 4FSK | 80-650 MHz, 862-940 MHz | 25 | -16dBm to +13dBm | 28mA | 48-Lead CSP | $2.88 |
| ADF7021-N | 2FSK, 3FSK, 4FSK | 80-650 MHz, 842-916 MHz | 24 | -16dBm to +13dBm | 29.2mA | 48-Lead CSP | $2.88 |
| ADF7025 | FSK | 431-464 MHz, 862-870 MHz , 902-928 MHz | 384 | -16dBm to +13dBm | 27mA | 48-Lead CSP | $2.88 |
| ADF7901 | ASK/FSK/OOK | 369.5MHz-395.9MHz | 20 | '+5dBm to +14dBm | 21mA | 24-Lead Tssop | $1.52 |
| ADF7902 | FSK | 369.5MHz-395.9MHz | 2 | - | - | 24-Lead Tssop | $1.52 |
* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S.
Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.
ADF7021 Model Options
| Модели | Статус | Корпуса | Pins | Температурный диапазон |
Цена* (1000 pcs.) |
Production** Availability |
ROHS Compilant | Samples Cart | Purchase Cart |
|---|---|---|---|---|---|---|---|---|---|
| ADF7021BCPZ | Prodn | 48 ld LFCSP (7x7x.85mm w/4.1mm Pad) | 48 | Ind | $ 2,88 | 10/31/2008 |
Y
Material Declaration |
Add To Cart | Add To Cart |
| ADF7021BCPZ-RL | Prodn | 48 ld LFCSP (7x7x.85mm w/4.1mm Pad) | 48 | Ind | $ 2,88 | 09/05/2008 |
Y
Material Declaration |
Обратная связь | Обратная связь |
| ADF7021BCPZ-RL7 | Prodn | 48 ld LFCSP (7x7x.85mm w/4.1mm Pad) | 48 | Ind | $ 2,88 | - |
Y
Material Declaration |
Обратная связь | Обратная связь |
| EVAL-ADF7021DBJZ | Prodn | EVALUATION BOARDS | - | Ind | $ 50,60 | 11/07/2008 | Y | Обратная связь | Add To Cart |
| EVAL-ADF7021DBZ2 | Prodn | EVALUATION BOARDS | - | Ind | $ 50,60 | 11/07/2008 | Y | Обратная связь | Add To Cart |
| EVAL-ADF7021DBZ3 | Prodn | EVALUATION BOARDS | - | Ind | $ 50,60 | 11/07/2008 | Y | Обратная связь | Add To Cart |
| EVAL-ADF7021DBZ5 | Prodn | EVALUATION BOARDS | - | Ind | $ 50,60 | 11/07/2008 | Y | Обратная связь | Add To Cart |
| EVAL-ADF7021DBZ6 | Prodn | EVALUATION BOARDS | - | Ind | $ 50,60 | 11/07/2008 | Y | Обратная связь | Add To Cart |
Help
- "Pre-Release": модель микросхемы еще не запущена в серийное производство, однако можно получить образцы.
- Производство: модель производится, доступна для покупки и заказа образцов.
- Завершение продаж: запланировано снятие модели микросхемы с производства, но в течение некоторого ограниченного времени покупка еще возможна.
- Снято с производства: Микросхема снята с производства и не доступна для приобретения. Другие варианты, указанные в таблице, все еще производятся (если их статус любой, кроме "снято с производства")
Для более подробного описания корпуса и материалов - см. Package Site
- Коммерческое исполнение: 0…70°С
- Военное исполнение: от -55 до +125 градусов по Цельсию
- Индустриальное исполнение: диапазоны рабочих температур могут быть разные у разных моделей. См. техническое описание (datasheet)
- Automotive: -40 to +125 °С
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.
*Приведенные цены действительны в США и указаны только для примерного бюджетного рассчета. Цены указаны в долларах США (за штуку в указанном размере партии) и могут быть изменены. Цены в других регионах могут отличаться в зависимости от местных пошлин, налогов, сборов и курсов валют. Для уточнения стоимости обращайтесь в местные офисы продаж Analog Devices, или к официальным дистрибьюторам. Цены на оценочные платы и наборы указаны за штуку независимо от количества.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.


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