ADF7901 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADF7901
Manufacturer

ADI
ChipWorker Part#

CW430794167
Description

High Performance ISM Band ASK/FSK Transmitter IC
Documentation

Datasheet

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ADF7901 Specifications

Attribute	Attribute Value

Part Number	ADF7901
Manufacturer	ADI
ChipWorker Part#	CW430794167
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
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.
### Features and Benefits
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

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