Datasheet

 
 
SBAS323G − JUNE 2004 − REVISED OCTOBER 2007
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21
TYPICAL CHARACTERISTICS: VDACs
AV
DD
= +5V, DV
DD
= +5V, f
OSC
= 8MHz, PGA = 1, f
MOD
= 15.625kHz, Bipolar, filter = Sinc
3
, Buffer ON, and V
REF
≡ (REF IN+) − (REF IN−) = +2.5V, unless
otherwise specified. For V
DAC
: V
REF
= AV
DD
,
R
LOAD
= 10kΩ, and C
LOAD
= 200pF unless otherwise noted.
VDAC INTEGRAL NONLINEARITY vs CODE
0000h
INL (LSB)
DAC Code
2000h 4000h 6000h 8000h A000h C000h E000h FFFFh
40
20
0
−
20
−
40
−
40
_
C
+85
_
C
+25
_
C
+125
_
C
VDAC DIFFERENTIAL NONLINEARITY vs CODE
DNL (LSB)
1.0
0.8
0.6
0.4
0.2
0
−
0.2
−
0.4
−
0.6
−
0.8
−
1.0
0000h
DAC Code
2000h 4000h 6000h 8000h A000h C000h E000h FFFFh
5.0
4.9
4.8
4.7
4.6
4.5
VDAC SOURCE CURRENT CAPABILITY
V
DAC
Output (V)
I
SOURCE
(mA)
0461082 121416
DAC = All 1s
0.6
0.5
0.4
0.3
0.2
0.1
0
VDAC SINK CURRENT CAPABILITY
V
DAC
Output (V)
I
SINK
(mA)
0461082 121416
DAC = All 0s
0.5
Error (% of FS)
Load Resistor (k
Ω
)
1101001k10k
1
0
−
1
−
2
−
3
−
4
−
5
VDAC FULL−SCALE ERROR vs LOAD RESISTOR