參數(shù)資料
型號(hào)： DAC908U
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： DAC
英文描述： PARALLEL, 8 BITS INPUT LOADING, 0.03 us SETTLING TIME, 8-BIT DAC, PDSO28
封裝： GREEN, PLASTIC, SOIC-28
文件頁(yè)數(shù)： 17/23頁(yè)
文件大?。?/td> 639K
代理商： DAC908U
DAC908
3
SBAS109B
ELECTRICAL CHARACTERISTICS (Cont.)
At TA = +25°C, +VA = +5V, +VD = +5V, differential transformer coupled output, 50 doubly terminated, unless otherwise specified.
DAC908U/E
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
DYNAMIC PERFORMANCE (Cont.)
Output Settling Time(2)
to 0.1%
30
ns
Output Rise Time(2)
10% to 90%
2
ns
Output Fall Time(2)
10% to 90%
2
ns
Glitch Impulse
3pV-s
DC-ACCURACY
Full-Scale Output Range(3)(FSR)
All Bits High, IOUT
2.0
20.0
mA
Output Compliance Range
–1.0
+1.25
V
Gain Error
With Internal Reference
–10
±1
+10
%FSR
Gain Error
With External Reference
–10
±2
+10
%FSR
Gain Drift
With Internal Reference
±120
ppmFSR/
°C
Offset Error
With Internal Reference
–0.025
+0.025
%FSR
Offset Drift
With Internal Reference
±0.1
ppmFSR/
°C
Power-Supply Rejection, +VA
–0.2
+0.2
%FSR/V
Power- Supply Rejection, +VD
–0.025
+0.025
%FSR/V
Output Noise
IOUT = 20mA, RLOAD = 50
50
pA/
√Hz
Output Resistance
200
k
Output Capacitance
IOUT, IOUT to Ground
12
pF
REFERENCE
Reference Voltage
+1.24
V
Reference Tolerance
±5%
Reference Voltage Drift
±50
ppmFSR/
°C
Reference Output Current
10
A
Reference Input Resistance
1M
Reference Input Compliance Range
0.1
1.25
V
Reference Small-Signal Bandwidth(4)
1.3
MHz
DIGITAL INPUTS
Logic Coding
Straight Binary
Latch Command
Rising Edge of Clock
Logic High Voltage, VIH
+VD = +5V
3.5
5
V
Logic Low Voltage, VIL
+VD = +5V
0
1.2
V
Logic High Voltage, VIH
+VD = +3V
2
3
V
Logic Low Voltage, VIL
+VD = +3V
0
0.8
V
Logic High Current, IIH(5)
+VD = +5V
±20
A
Logic Low Current, IIL
+VD = +5V
±20
A
Input Capacitance
5pF
POWER SUPPLY
Supply Voltages
+VA
+2.7
+5
+5.5
V
+VD
+2.7
+5
+5.5
V
Supply Current(6)
IVA
24
30
mA
IVA, Power-Down Mode
1.1
2
mA
IVD
815
mA
Power Dissipation
+5V, IOUT = 20mA
170
230
mW
+3V, IOUT = 2mA
50
mW
Power Dissipation, Power-Down Mode
45
mW
Thermal Resistance,
θ
JA
SO-28
75
°C/W
TSSOP-28
50
°C/W
NOTES: (1) At output IOUT, while driving a virtual ground. (2) Measured single-ended into 50 Load. (3) Nominal full-scale output current is 32x IREF; see Application
Section for details. (4) Reference bandwidth depends on size of external capacitor at the BW pin and signal level. (5) Typically 45
A for the PD pin, which has an
internal pull-down resistor. (6) Measured at fCLOCK = 50MSPS and fOUT = 1.0MHz.
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