Datasheet

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PIN ASSIGNMENTS
1
8
CLK
CS
DRB PACKAGE
(TOP VIEW)
V
DD
4
CLK
DGK PACKAGE
(TOP VIEW)
SDI
R
FB
V
REF
V
DD
I
OUT
GND
R
FB
SDI
V
REF
CS
I
OUT
GND
3
2
1
5
6
7
8
7
6
5
2
3
4
DAC8801
SLAS403B – NOVEMBER 2004 – REVISED FEBRUARY 2007
ELECTRICAL CHARACTERISTICS (continued)
V
DD
= 2.7 V to 5.5 V; I
OUT
= Virtual GND, GND = 0 V; V
REF
= 10 V; T
A
= Full Operating Temperature; all specifications -40 ° C
to 85 ° C unless otherwise noted.
DAC8801
PARAMETER CONDITIONS UNITS
MIN TYP MAX
Total harmonic distortion V
REF
= 5 V
PP
, Data = 3FFFh, f = 1 kHz –105 dB
Output spot noise voltage f = 1 kHz, BW = 1 Hz 12 nV/ √ Hz
TERMINAL FUNCTIONS
PIN NAME DESCRIPTION
1 CLK Clock input, positive edge triggered clocks data into shift register
2 SDI Serial register input, data loads directly into the shift register MSB first. Extra leading bits are ignored.
3 R
FB
Internal matching feedback resistor. Connect to external op amp output.
4 V
REF
DAC reference input pin. Establishes DAC full-scale voltage. Constant input resistance versus code.
5 I
OUT
DAC current output. Connects to inverting terminal of external precision I to V op amp.
6 GND Analog and digital ground
7 V
DD
Posiitve power supply input. Specified range of operation 2.7 V to 5.5 V.
Chip select, active low digital input. Transfers shift register data to DAC register on rising edge. See Table 1 for
8 CS
operation.
4
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