Datasheet

DAC7642, DAC7643
4
SBAS233
www.ti.com
DAC7642VF DAC7642VFB
DAC7643VF DAC7643VFB
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
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 ±3 ✻✻ mV
Zero-Scale Error Drift 5 10 ✻✻ppm/°C
Full-Scale Error ±1 ±3 ✻✻ mV
Full-Scale Error Drift 5 10 ✻✻ppm/°C
Zero-Scale Matching Channel-to-Channel Matching ±1 ±3 ±1 ±3mV
Full-Scale Matching Channel-to-Channel Matching ±1 ±3 ±1 ±3mV
Power-Supply Rejection Ratio (PSRR)
At Full-Scale 10 100 ✻✻ppm/V
ANALOG OUTPUT
Voltage Output R
L
= 10k 0V
REF
H ✻✻V
Output Current 1.25 +1.25 ✻✻mA
Maximum Load Capacitance No Oscillation 500 pF
Short-Circuit Current 10, +30 mA
Short-Circuit Duration GND or V
CC
Indefinite
REFERENCE INPUT
Ref High Input Voltage Range
V
REF
L + 1.25
+2.5 ✻✻V
Ref Low Input Voltage Range 0
V
REF
H 1.25
✻✻V
Ref High Input Current 250 µA
Ref Low Input Current 250 µA
DYNAMIC PERFORMANCE
Settling Time To ±0.003%, 2.5V Output Step 8 10 ✻✻ µs
Channel-to-Channel Crosstalk See Figure 6 0.5 LSB
Digital Feedthrough 2 nV-s
Output Noise Voltage, f = 10kHz 60 nV/Hz
DAC Glitch
7FFF
H
to 8000
H
or 8000
H
to 7FFF
H
40 nV-s
DIGITAL INPUT
V
IH
0.7 V
CC
V
V
IL
0.3 V
CC
V
I
IH
±10 µA
I
IL
±10 µA
DIGITAL OUTPUT
V
OH
I
OH
= 0.8mA 3.6 4.5 ✻✻ V
V
OL
I
OL
= 1.2mA 0.3 0.4 ✻✻ V
POWER SUPPLY
V
CC
+4.75 +5.0 +5.25 ✻✻✻ V
V
SS
000✻✻✻ V
I
CC
0.5 0.9 ✻✻ mA
Power 2.5 4.5 ✻✻ mW
TEMPERATURE RANGE
Specified Performance 40 +85 ✻✻°C
Specifications same as DAC7642VF and DAC7643VF.
NOTE: (1) If V
SS
= 0V, specification applies at Code 0040
H
and above due to possible negative zero-scale error.
ELECTRICAL CHARACTERISTICS (Single Supply)
At T
A
= T
MIN
to T
MAX
, V
CC
= +5V, V
SS
= 0V, V
REF
H = +2.5V, and V
REF
L = 0V, unless otherwise noted.