Application Circuits
Typical Application Circuit
1
1
2
2
3
3
5
4
6
5
7
6
12
9
11
8
10
7
16
12
15
11
14
10
Serial Interface Data Input/Output for Register Programming. When CSB is at logic-low.
CLKOUT
SDIO
Data Output of Demodulated Received Signal
DATAOUT
DATA
LNAIN
MAX41470
Serial Interface Clock Input for Register Programming
DATAOUT
SCLK
Power-Supply Voltage. Connect a 0.01μF capacitor to ground.
VDD
V
DD
MCU
MCU
Serial Interface Chip Select. Active low.
DATAOUT
CSB
Power-Down, Active-High. When the pin is controlled by external MCU, apply logic-high for shutdown mode or logic-low to enable the device. After a falling edge of PWRDN, the internal registers are reset to default values. When the pin is connected to GND, the device cannot enter the lowest current shutdown state. Proper start-up timing is for MCU to drive PWRDN high and wait for 1ms, then drive PWRDN low and wait for 0.2ms before writing to registers.
DATAOUT
PWRDN
Low-Noise Amplifier Input
CLKOUT
LNA
Ground for Low-Noise Amplifier
CLKOUT
GND_LNA
Ground
CLKOUT
GND
Recovered Clock Output. If the clock output is disabled, connect to GND. If the clock output is enabled, tie the pin to GND through a 10kΩ resistor.
DATAOUT
CLK
Power-Supply Voltage. Connect a 0.01μF capacitor to ground.
DATAOUT
V
DD
Second Crystal Input
DATAOUT
XTAL2
First Crystal Input. Can be driven single-ended.
DATAOUT
XTAL1
Power-Supply Voltage. Connect a 0.01μF capacitor to ground.
VDD
V
DD
CLKOUT
CDR STATE
(0Ω
OR 10kΩ)
