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 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.

ADF7901 特点

• 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

ADF7901功能框图

ADF7901 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
ADF7901BRU	量产	24 ld TSSOP	24	工业
ADF7901BRU-REEL	量产	24 ld TSSOP	24	工业
ADF7901BRU-REEL7	量产	24 ld TSSOP	24	工业
ADF7901BRUZ	量产	24 ld TSSOP	24	工业
ADF7901BRUZ-RL	量产	24 ld TSSOP	24	工业
ADF7901BRUZ-RL7	量产	24 ld TSSOP	24	工业
EVAL-ADF7901EBZ	量产	评估板	-	工业
EVAL-ADF790XEBZ	量产	评估板	-	工业

ADF7901 应用技术支持与电子电路设计开发资源下载

1. ADF7901 数据手册DataSheet 下载 . PDF
2. ADI 模拟器件公司比较器产品选型指南 . PDF
3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF