Datasheet

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ELECTRICAL CHARACTERISTICS
DAC7554
SLAS399A – OCTOBER 2004 – REVISED NOVEMBER 2004
V
DD
= 2.7 V to 5.5 V, REFIN = VDD, R
L
= 2 k Ω to GND; C
L
= 200 pF to GND; all specifications –40 ° C to 105 ° C, unless
otherwise specified
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
STATIC PERFORMANCE
(1)
Resolution 12 Bits
Relative accuracy ± 0.35 ± 1 LSB
Differential nonlinearity Specified monotonic by design ± 0.08 ± 0.5 LSB
Offset error ± 12 mV
Zero-scale error All zeroes loaded to DAC register ± 12 mV
Gain error ± 0.15 %FSR
Full-scale error ± 0.5 %FSR
Zero-scale error drift 7 µV/ °C
Gain temperature coefficient 3 ppm of FSR/ °C
PSRR V
DD
= 5 V 0.75 mV/V
OUTPUT CHARACTERISTICS
(2)
Output voltage range 0 REFIN V
Output voltage settling time R
L
= 2 k Ω; 0 pF < C
L
< 200 pF 5 µs
Slew rate 1 V/ µs
Capacitive load stability R
L
= ∞ 470 pF
R
L
= 2 k Ω 1000
Digital-to-analog glitch impulse 1 LSB change around major carry 0.1 nV-s
Channel-to-channel crosstalk 1-kHz full-scale sine wave, outputs unloaded –100 dB
Digital feedthrough 0.1 nV-s
Output noise density (10-kHz offset fre- 70 nV/rtHz
quency)
Total harmonic distortion F
OUT
= 1 kHz, F
S
= 1 MSPS, BW = 20 kHz –85 dB
DC output impedance 1 Ω
Short-circuit current V
DD
= 5 V 50 mA
V
DD
= 3 V 20
Power-up time Coming out of power-down mode, V
DD
= 5 V 15 µs
Coming out of power-down mode, V
DD
= 3 V 15
LOGIC INPUTS
(2)
Input current ± 1 µA
V
IN_L
, Input low voltage V
DD
= 5 V 0.3 V
DD
V
V
IN_H
, Input high voltage V
DD
= 3 V 0.7 V
DD
V
Pin capacitance 3 pF
POWER REQUIREMENTS
V
DD
2.7 5.5 V
I
DD
(normal operation) DAC active and excluding load current
V
DD
= 3.6 V to 5.5 V V
IH
= V
DD
and V
IL
= GND 700 880 µA
V
DD
= 2.7 V to 3.6 V 550 830
I
DD
(all power-down modes)
V
DD
= 3.6 V to 5.5 V V
IH
= V
DD
and V
IL
= GND 0.2 2 µA
V
DD
= 2.7 V to 3.6 V 0.05 2
Reference input impedance 25 k Ω
POWER EFFICIENCY
I
OUT
/I
DD
I
LOAD
= 2 mA, V
DD
= 5 V 93%
(1) Linearity tested using a reduced code range of 48 to 4048; output unloaded.
(2) Specified by design and characterization, not production tested.
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