Datasheet

DAC8248
Parameter Symbol Conditions Min Typ Max Units
STATIC ACCURACY
Resolution N 12 Bits
Relative Accuracy INL DAC8248A/E/G ±1/2 LSB
DAC8248F/H ±1 LSB
Differential Nonlinearity DNL All Grades are Guaranteed Monotonic ±1 LSB
Full-Scale Gain Error
1
G
FSE
DAC8248A/E ±1 LSB
DAC8248G ±2 LSB
DAC8248F/H ±4 LSB
Gain Temperature Coefficient
(∆Gain/∆Temperature) TCG
FS
(Notes 2, 3) ±2 ±5 ppm/°C
All Digital Inputs = 0s
Output Leakage Current I
LKG
T
A
= +25°C ±5 ±10
I
OUT A
(Pin 2), I
OUT B
(Pin 24) T
A
= Full Temperature Range ±50 nA
Input Resistance (V
REF A
,
REF B
)R
REF
(Note 4) 8 11 15 kΩ
Input Resistance Match
∆R
REF
R
REF
±0.2 ±1%
DIGITAL INPUTS
Digital Input High V
INH
V
DD
= +5 V 2.4 V
V
DD
= +15 V 13.5 V
Digital Input Low V
INL
V
DD
= +5 V 0.8 V
V
DD
= +15 V 1.5 V
Input Current (V
IN
= 0 V T
A
= +25°C ±0.001 ±1 µA
or V
DD
and V
INL
or V
INH
)I
IN
T
A
= Full Temperature Range ±10 µA
Input Capacitance C
IN
DB0–DB11 10 pF
(Note 2)
WR, LDAC, DAC A/DAC B,
LSB/MSB, RESET 15 pF
POWER SUPPLY
Supply Current I
DD
Digital Inputs = V
INL
or V
INH
2mA
Digital Inputs = 0 V or V
DD
10 100 µA
DC Power Supply Rejection Ratio PSRR ∆V
DD
= ±5%
(∆Gain/∆V
DD
) 0.002 %/%
AC PERFORMANCE CHARACTERISTICS
2
Propagation Delay
5, 6
t
PD
T
A
= +25°C 350 ns
Output Current Setting Time
6, 7
t
S
T
A
= +25°C1µs
Output Capacitance C
O
Digital Inputs = All 0s
C
OUT A
, C
OUT B
90 pF
Digital Inputs = All 1s
C
OUT A
, C
OUT B
120 pF
AC Feedthrough at FT
A
V
REF A
to I
OUT A
; V
REF A
= 20 V p-p
I
OUT A
or I
OUT B
f = 100 kHz; T
A
= +25°C –70 dB
FT
B
V
REF B
to I
OUT B
; V
REF B
= 20 V p-p
f = 100 kHz; T
A
= +25°C –70 dB
REV. B
–2–
DAC8248–SPECIFICATIONS
ELECTRICAL CHARACTERlSTICS
(@ V
DD
= +5 V or +15 V; V
REF A
= V
REF B
= +10 V; V
OUTA
= V
OUT B
= 0 V; AGND = DGND = 0 V;
T
A
= Full Temp Range specified in Absolute Maximum Ratings; unless otherwise noted. Specifications apply for DAC A and DAC B.)