MAX5174/MAX5176
Low-Power, Serial, 12-Bit DACs
with Voltage Output
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Typical Operating Characteristics (continued)
(MAX5174: V
DD
= +5V, V
REF
= 2.5V; MAX5176: V
DD
= +3V, V
REF
= +1.25V; C
L
= 100pF, OS = AGND, code = FFF hex,
T
A
= +25°C, unless otherwise noted.)
MAX5176
Pin Description
Voltage Output. High impedance when in shutdown. The output voltage is limited to V
DD
.OUT2
Power-Down Lockout. (digital input). Connect to V
DD
to allow shutdown. Connect to DGND to disable
software and hardware shutdown.
PDL
4
Reset Mode Select (digital input). Connect to V
DD
to select midscale reset output voltage. Connect to
DGND to select 0 reset output voltage.
RS3
Chip-Select Input (digital input). DIN ignored when CS is high.CS
6
Serial Clock Input (digital input).SCLK8
Serial-Data Input (digital input). Data is clocked in on the rising edge of SCLK.DIN7
Clear DAC. (digital input) Clears the DAC to either zero or midscale as determined by RS.
CLR
5
Serial-Data OutputDOUT10
Shutdown (digital input). Pulling SHDN high when PDL = V
DD
places the chip in shutdown with a maximum
shutdown current of 10µA.
SHDN12
User-Programmable Output. State is set by the serial input.UPO11
Reference Input. Maximum V
REF
is V
DD
- 1.4V.REF14
PIN
Positive Supply. Bypass to AGND with a 4.7µF capacitor in parallel with a 0.1µF capacitor.V
DD
16
Offset Adjustment. Connect to AGND for no offset.OS1
FUNCTIONNAME
No Connection N.C.15
Analog GroundAGND13
Digital GroundDGND9
