XRD54L08/L10/L12

10

Rev. 1.30

operating from a 3V supply versus 5V for the MA515 and

MAX539. The DOUT port also has 4mA driving capability

for greater fan-out when daisy-chaning to other digital

inputs.

Monotonicity

The XRD54L08/L10/L12 family of DACs are monotonic

over the entire temperature range.

Micro-Power Operation

The XRD54L08/L10/L12 are the lowest power DACs in

their class. The quiescent current rating does not include

the reference ladder current. Power can be saved when

the part is not in use by setting the DAC code to all “0”s

assuming the output load is referenced to ground. This

minimizes the DAC output load current. An analog switch

placed in series with the reference ladder can toggle the

reference voltage off when the circuit is inactive to

minimize power consumption.

Power Supply and Grounding

Best parametric results are obtained by powering the

XRD54L08/L10/L12 family of DACs from an analog +3V

power supply and analog ground. Digital power supplies

and grounds should be separated or connected to the

analog supplies and grounds only at the low-impedance

power-supply source. This is best accomplished on a

multilayer PCB with dedicated planes to ground and

power. The DACs should be locally bypassed with both

0.1 F and 2.2 F capacitors mounted as close as possible

capacitors are recommended for low impedance, wide

band power supply bypass. If only one +3V power supply

is available for both analog and digital circuity isolate the

analog power supply to the XRD54L08/L10/L12 DAC with

an inductor or ferrite bead before the local bypass

capacitors.

PERFORMANCE CHARACTERISTICS

Figure 8. XRD54L08 INL (For XRD54L10 and XRD54L12, Scale Axes Accordingly)

Figure 9. XRD54L08 DNL (For XRD54L10 and XRD54L12, Scale Axes Accordingly)

--0.20

--0.12

--0.04

0.04

CODE

64

128

0

192

255

--0.06

--0.02

0.02

0.06

0.10

CODE

128

64

192

255

0

0