ZHCSIZ1G May 2010 – November 2018 LM98640QML-SP
PRODUCTION DATA.
The LM98640QML-SP provides several ways to save power when the device is not in normal usage mode. Using the Powerdown Control Register (0x01) the part can be placed into Powerdown Mode, or Single Channel Mode. In Powerdown Mode (Powerdown Control, bit[7]) the following blocks are placed in a Powerdown mode: VCLP, Channel 1 and 2 Reference Buffers, Channel 1 and 2 PGA OpAmps, and Channel 1 and 2 Amplifiers. Powerdown Mode will override all other Powerdown Control Register bits. To place the part in Single Channel Mode each block of the unused channel can be powered down using their respective control bits (Powerdown Control, bits[5:0]). If an external reference clamp is used the VCLP block can be powered down during any Power mode. For applications operating at a low enough frequency additional power can be saved by powering down one channel reference buffer, then externally tie both channel's reference pins together.