Datasheet

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PIN ASSIGNMENTS
DRB PACKAGE
(TOP VIEW)
DGK PACKAGE
(TOP VIEW)
CLK
SDI
R
FB
V
REF
CS
V
DD
GND
I
OUT
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
CLK
SDI
R
FB
V
REF
CS
V
DD
GND
I
OUT
DAC8811
SLAS411B – 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.
DAC8811
PARAMETER CONDITIONS UNITS
MIN TYP MAX
Digital feedthrough CS = 1 and f
CLK
= 1 MHz 2 nV/s
Total harmonic distortion V
REF
= 5 V
PP
, Data = FFFFh, f = 1 kHz –105 dB
Output spot noise voltage f = 1 kHz, BW = 1 Hz 12 nV/ √ Hz
Table 1. 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/V op amp.
6 GND Analog and digital ground.
7 V
DD
Positive power supply input. Specified operating range of 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 2 for
8 CS
operation.
4
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