Datasheet

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SPECIFICATIONS
DAC7634
SBAS134B – JULY 2004 – REVISED DECEMBER 2005
At T
A
= T
MIN
to T
MAX
, V
DD
= V
CC
= 5 V, V
SS
= 0 V, V
REF
H = 2.5 V, and V
REF
L = 0 V, unless otherwise noted
DAC7634E DAC7634EB
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX MIN TYP MAX
ACCURACY
Linearity error
(1)
±3 ±4 ±2 ±3 LSB
Linearity match ±4 ±2 LSB
Differential linearity error ±2 ±3 ±1 ±2 LSB
Monotonicity, T
MIN
to T
MAX
14 15 Bits
Zero-scale error ±1 ±2 ±1 ±2 mV
Zero-scale error drift 5 10 5 10 ppm/°C
Full-scale error ±1 ±2 ±1 ±2 mV
Full-scale error drift 5 10 5 10 ppm/°C
Zero-scale matching Channel-to-channel matching ±1 ±2 ±1 ±2 mV
Full-scale matching Channel-to-channel matching ±1 ±2 ±1 ±2 mV
Power supply rejection ratio (PSRR) At full scale 10 100 10 100 ppm/V
ANALOG INPUT
Voltage output 0 V
REF
H 0 V
REF
H V
V
REF
L = 0 V, V
SS
= 0 V,
R
L
= 10 k Ω
Output current – 1.25 1.25 –1.25 1.25 mA
Maximum load capacitance No oscillation 500 500 pF
Short-circuit current ±30 ±30 mA
Short-circuit duration GND or V
CC
Indefinite Indefinite
REFERENCE INPUT
V
REF
L V
REF
L
Ref high input voltage range 2.5 2.5 V
+1.25 +1.25
V
REF
H V
REF
H
Ref low input voltage range 0 0 V
–1.25 –1.25
Ref high input current 250 250 µA
Ref low input current –250 –250 µA
DYNAMIC PERFORMANCE
Settling time To ±0.003%, 2.5-V output step 8 10 8 10 µs
Channel-to-channel crosstalk See Figure 6 0.5 0.5 LSB
Digital feedthrough 2 2 nV-s
Output noise voltage f = 10 kHz 60 60 nV/ √ Hz
7FFF
H
to 8000
H
or
DAC glitch 40 40 nV-s
8000
H
to 7FFF
H
DIGITAL INPUT
V
IH
0.7 × V
DD
0.7 × V
DD
V
V
IL
0.3 × V
DD
0.3 × V
DD
V
I
IH
±10 ±10 µA
I
IL
±10 ±10 µA
DIGITAL OUTPUT
V
OH
I
OH
= –0.8 mA 3.6 4.5 3.6 4.5 V
V
OL
I
OL
= 1.6 mA 0.3 0.4 0.3 0.4 V
POWER SUPPLY
V
DD
4.75 5.0 5.25 4.75 5.0 5.25 V
V
CC
4.75 5.0 5.25 4.75 5.0 5.25 V
V
SS
0 0 0 0 0 0 V
I
CC
1.5 2 1.5 2 mA
I
DD
50 50 µA
Power 7.5 10 7.5 10 mW
(1) If V
SS
= 0 V specification applies at Code 0040
H
and above due to possible negative zero-scale error.
4