DAC8718 Datasheet, PDF (23/60 Pages) Texas Instruments – Octal, 16-Bit, Low-Power, High-Voltage Output, Serial Input DIGITAL-TO-ANALOG CONVERTER

DAC8718
www.ti.com
SBAS467A – MAY 2009 – REVISED DECEMBER 2009
TYPICAL CHARACTERISTICS: Bipolar (continued)
At T_A = 25°C, AV_DD = 16.5V, AV_SS = –16.5V, V_REF = IOV_DD = DV_DD = 5V, gain = 6, data format=USB, unless otherwise noted.
ANALOG POWER-SUPPLY CURRENT
vs TEMPERATURE
ANALOG POWER-SUPPLY CURRENT
vs REFERENCE VOLTAGE
8
8
All DACs Loaded with Midscale Code
7
7
AV_DD = +18V
AV_SS = -18V
6
6
5
I_AVDD
4
3
-I_AVSS
5
I_AVDD
4
3
2
2
-I_AVSS
1
1
0
-55 -40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature (°C)
Figure 33.
0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
V_REF (V)
Figure 34.
ANALOG POWER-SUPPLY CURRENT
vs DIGITAL INPUT CODE
8
All DACs Loaded with Same Code
7
6
5
I_AVDD
4
3
-I_AVSS
2
1
0
0 8192 16384 24576 32768 40960 49152 57344 65536
Digital Input Code
Figure 35.
DIGITAL POWER-SUPPLY CURRENT
vs LOGIC INPUT VOLTAGE
250
One Digital Input Swept, All Others at GND or IOV_DD
200
Sweep From
5.5V to 0V
150
Sweep From
0V to 5.5V
100
50
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Logic Input Voltage (V)
Figure 36.
DELTA OUTPUT VOLTAGE
vs SOURCE AND SINK CURRENTS
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-15 -12 -9
-6 -3 0 3 6
Current Output I_OUT (mA)
FFFFh
C000h
8000h
4000h
0000h
9 12 15
Figure 37.
DAC OUTPUT NOISE DENSITY
vs FREQUENCY
2000
1800
DAC Loaded with Midscale Code
1600
1400
1200
1000
800
600
400
200 ^{Gain = 4}
Gain = 6
0
1
10
100
1k
10k
100k
Frequency (Hz)
Figure 38.
Copyright © 2009, Texas Instruments Incorporated
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