Datasheet

Data Sheet AD5501
Rev. C | Page 3 of 20
The serial interface offers the user the capability of both writing
to, and reading from, most internal registers.
To reduce power consumption at power up, only the digital
section of the AD5501 is powered up initially. This gives the
user the ability to program the DAC registers to the required
value while typically consuming only 30 μA of supply current.
The AD5501 incorporates power-on reset circuitry that ensures
the DAC registers power up in a known condition and remain
there until a valid write to the device has occurred. The analog
section is powered up by issuing a power-up command via the
SPI interface. The AD5501 provides software-selectable output
loads while in the power-down mode.
The AD5501 has on on-chip temperature sensor. If the tem-
perature on the die exceeds 110°C, the
ALARM
pin (an active
low CMOS output pin) flags an alarm and the AD5501 enters
a temperature power-down mode that disconnects the output
amplifier, thus removing the short-circuit condition. The AD5501
remains in power-down mode until a software power-up
command is executed.
The AD5501 is available in a compact 16-lead TSSOP. The AD5501
is guaranteed to operate over the extended temperature range of
−40°C to +105°C.
Table 1. Related Device
Part No. Description
AD5504 High Voltage, Quad Channel 12-Bit Voltage Output DAC