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ADF7901:  High Performance ISM Band ASK/FSK Transmitter IC

The ADF7901 is a low power OOK/FSK UHF transmitter designed for use in RF remote control devices. The device is capable of Frequency Shift Keying (FSK) modulation on eight different channels, selectable by three external control lines. OOK modulation is performed by modulating the PA control line.

The on-chip VCO operates at 2x the output frequency. The divide by 2 at the output of the VCO ...More

ADF7901:  High Performance ISM Band ASK/FSK Transmitter IC

Product Description

The ADF7901 is a low power OOK/FSK UHF transmitter designed for use in RF remote control devices. The device is capable of Frequency Shift Keying (FSK) modulation on eight different channels, selectable by three external control lines. OOK modulation is performed by modulating the PA control line.

The on-chip VCO operates at 2x the output frequency. The divide by 2 at the output of the VCO reduces the amount of PA feedthrough. As a result of this, OOK modulation depths of greater than 50dB are easily achievable.

The FSK_ADJ and ASK_ADJ resistors can be adjusted in the system to optimize output power for each modulation scheme. An additional 1.5dB of output power is provided for the lower bank of channels to adjust for antenna performance.

The CE line allows the transmitter to be powered down completely. In this mode the leakage current is typically 0.1µA.

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  • Single-chip, Low-power UHK Transmitter
  • 369.5 MHz to 395.9 MHz Frequency Operation using Fractional-N PLL and Fully-integrated VCO
  • 3.0 V Supply Voltage
  • Data Rates Supported < 20 kbps
  • Low Current Consumption 26mA at 12dBm Output at 384 MHz
  • Power-down Mode (<1µA)
  • 24-Lead TSSOP Package
  • Modulation Mode: ASK/FSK/OOK
  • Output Frequency Range : 369.5MHz-395.9MHz
  • Maximum Data Rate (kbps): 20kbps
  • Programmable Output Power: '+5dBm to +14dBm
  • +10dBm Pwr Consumption : 21mA
  • Package: 24-Lead Tssop

Functional Block Diagram for ADF7901

Similar Products

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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 26mA 48-Lead CSP $2.23
ADF7020-1 ASK/FSK/OOK, FSK/ASK/GFSK 135MHz to 650MHz. 200 -16dBm to +13dBm 21mA 48-Lead CSP $2.23
ADF7021 2FSK, 3FSK, 4FSK 80-650 MHz, 862-940 MHz 25 -16dBm to +13dBm 29mA 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
ADF7023 ASK/FSK/OOK 431-464 MHz, 862-928 MHz 300 -20dBm to +13dBm - - -
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
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* 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.

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For detailed drawings and chemical composition please consult our  Package Site

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Price
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

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This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement page

*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.