Datasheet

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ELECTRICAL CHARACTERISTICS
(1)
DAC8802
SBAS351B – AUGUST 2005 – REVISED FEBRUARY 2007
V
DD
= 2.7 V to 5.5 V, I
OUT
X = Virtual GND, A
GND
X = 0 V, V
REF
A, B = 10 V, T
A
= full operating temperature range, unless
otherwise noted.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT
STATIC PERFORMANCE
(2)
Resolution 14 Bits
Relative accuracy INL ± 1 LSB
Differential nonlinearity DNL ± 1 LSB
Data = 0000h, T
A
= 25 ° C 10 nA
Output leakage current I
OUT
X
Data = 0000h, T
A
= T
A
max 20 nA
Full-scale gain error G
FSE
Data = 3FFFh ± 0.75 ± 4 mV
Full-scale tempco
(3)
TCV
FS
1 ppm/ ° C
Feedback resistor R
FB
X V
DD
= 5 V 5 k Ω
REFERENCE INPUT
(3)
V
REF
X Range V
REF
X –15 15 V
Input resistance R
REF
X 4 5 6 k Ω
Input resistance match R
REF
X Channel-to-channel 1 %
Input capacitance C
REF
X 5 pF
ANALOG OUTPUT
(3)
Output current I
OUT
X Data = 3FFFh 1.6 2.5 mA
Output capacitance C
OUT
X Code-dependent 50 pF
LOGIC INPUTS
(3)
V
DD
= 2.7 V 0.6 V
Input low voltage V
IL
V
DD
= 5 V 0.8 V
V
DD
= 2.7 V 2.1 V
Input high voltage V
IH
V
DD
= 5 V 2.4 V
Input leakage current I
IL
1 µ A
Input capacitance C
IL
10 pF
INTERFACE TIMING
(4)
Clock width high t
CH
10 ns
Clock width low t
CL
10 ns
CS to Clock setup t
CSS
0 ns
Clock to CS hold t
CSH
10 ns
Clock to SDO prop delay t
PD
2 20 ns
Load DAC pulsewidth t
LDAC
20 ns
Data setup t
DS
10 ns
Data hold t
DH
10 ns
Load setup t
LDS
5 ns
Load hold t
LDH
25 ns
(1) Specifications subject to change without notice.
(2) All static performance tests (except I
OUT
) are performed in a closed-loop system using an external precision OPA277 I-to-V converter
amplifier. The DAC8802 R
FB
terminal is tied to the amplifier output. Typical values represent average readings measured at +25 ° C.
(3) These parameters are specified by design and not subject to production testing.
(4) All input control signals are specified with t
R
= t
F
= 2.5 ns (10% to 90% of 3 V) and timed from a voltage level of 1.5 V.
3
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