diff --git a/src/ad5680.rs b/src/ad5680.rs
index 74b62d1..cc75c95 100644
--- a/src/ad5680.rs
+++ b/src/ad5680.rs
@@ -15,7 +15,7 @@ pub const SPI_MODE: spi::Mode = spi::Mode {
 /// 30 MHz
 pub const SPI_CLOCK: MegaHertz = MegaHertz(30);
 
-pub const MAX_VALUE: u32 = 0x20000;
+pub const MAX_VALUE: u32 = 0x3FFFF;
 
 /// [AD5680](https://www.analog.com/media/en/technical-documentation/data-sheets/AD5680.pdf) DAC
 pub struct Dac<SPI: Transfer<u8>, S: OutputPin> {