ADS8319 Datasheet, PDF (11/30 Pages) Texas Instruments – 16-BIT, 500-KSPS, SERIAL INTERFACE MICROPOWER, MINIATURE, SAR ANALOG-TO-DIGITAL CONVERTER

ADS8319
www.ti.com ........................................................................................................................................................................................................ SLAS600 – MAY 2008
TYPICAL CHARACTERISTICS (continued)
TOTAL HARMONIC DISTORTION
vs
SIGNAL INPUT FREQUENCY
135
+VA = 5 V
+VBD = 2.7 V,
125 V_ref = 5 V,
f_s = 500 KSPS,
115 ^{TA = 30°C}
105
THD @ -0.5 dB
95
85
THD @ -10 dB
75
1
10
100
f_i - Signal Input Frequency - kHz
Figure 33.
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
3.85
3.8
3.75
3.7
+VBD = 2.7 V,
V_ref = 4.096 V,
f_s = 500 KSPS,
T_A = 30°C
3.65
3.6
3.55
3.5
3.45
3.4
3.35
4.5
4.75
5
5.25
5.5
+VA - Supply Voltage - V
Figure 36.
POWER DISSIPATION
vs
SAMPLING FREQUENCY
20
+VA = 5 V,
18 _{+VBD = 2.7 V,}
16 ^{Vref = 5 V,}
T_A = 30°C
14
12
10
8
6
4
2
0
0
100 200 300 400 500
f_s - sampling frequency - kSPS
Figure 39.
DC HISTORAM OF ADC CLOSE TO
CENTER CODE
300000
250000
200000
+VA = 5 V,
+VBD = 2.7 V,
V_ref = 5 V,
f_s = 500 KSPS,
T_A = 30°C
262043
150000
100000
50000
0
101
32765
32766
Codes
Figure 34.
0
32767
SUPPLY CURRENT
vs
FREE-AIR TEMPERATURE
3.9
3.8 _{+VA = 5 V}
+VBD = 2.7 V,
3.7 _{fs = 500 KSPS}
3.6
3.5
3.4
3.3
3.2
3.1
3.0
-40 -25 -10 5 20 35 50 65 80
T_A - Free-Air Temperature - °C
Figure 37.
POWERDOWN CURRENT
vs
SUPPLY VOLTAGE
200
180 ^{+VBD = 2.7 V,}
V_ref = 4.096 V,
160 fs = 0.0 KSPS,
140 ^{TA = 30°C}
120
100
80
60
40
20
0
4.5
5
5.5
+VA - Supply Voltage - V
Figure 40.
TOTAL HARMONIC DISTORTION
vs
SOURCE RESISTANCE
114
0 pF
112
110
680 pF
100 pF
108
106
+VA = 5V, +VBD = 2.7 V,
V_ref = 5 V, f_i = 1.9 kHz,
104
f_s = 500 KSPS, T_A = 30°C
102
100
0
100 200 300 400 500 600
Source Resistance - W
Figure 35.
SUPPLY CURRENT
vs
SAMPLING FREQUENCY
4000
3500
3000
+VA = 5 V,
+VBD = 2.7 V,
T_A = 30°C
2500
2000
1500
1000
500
0
0
100 200 300 400 500
f_s - sampling frequency - kSPS
Figure 38.
POWERDOWN CURRENT
vs
FREE-AIR TEMPERATURE
500
450
+VA = 5 V
+VBD = 2.7 V,
400 ^Vref ^{= 4.096 V,}
350 ^{fs = 0.0 KSPS}
300
250
200
150
100
50
0
-40 -25 -10 5 20 35 50 65 80
T_A - Free-Air Temperature - °C
Figure 41.
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): ADS8319
Submit Documentation Feedback
11