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TYPICAL CHARACTERISTICS
SNR − Signal-to-Noise Ratio − dB
V
ref
− Reference Voltage − V
85
86
87
88
89
90
91
92
2.5 3 3.5 4
f
i
= 1 kHz,
+VA = 5 V,
+VBD = 5 V,
T
A
= 25°C
85
86
87
88
89
90
91
92
2.5 3 3.5 4
f
i
= 1 kHz,
+VA = 5 V,
+VBD = 5 V,
T
A
= 25°C
SINAD − Signal-To-Noise and Distortion − dB
V
ref
− Reference Voltage − V
f
i
= 1 kHz,
+VA = 5 V,
+VBD = 5 V,
T
A
= 25°C
V
ref
− Reference Voltage − V
SFDR − Spurious Free Dynamic Range − dB
116
116.5
117
117.5
118
118.5
119
119.5
120
2.5 3 3.5 4
THD − Total Harmonic Distortion − dB
f
i
= 1 kHz,
+VA = 5 V,
+VBD = 5 V,
T
A
= 25°C
−114.5
−114
−113.5
−113
−112.5
−112
2.5 3 3.5 4
V
ref
− Reference Voltage − V
T
A
− Free-Air Temperature − °C
f
i
= 1 kHz,
+VA = 5 V,
+VBD = 5 V,
REFIN = 4.096 V
ENOB − Effective Number of Bits − Bits
14.75
14.8
14.85
14.9
14.95
15
−40 −25 −10 5 20 35 50 65 80
13.8
14
14.2
14.4
14.6
14.8
15
2.5 3 3.5 4
f
i
= 1 kHz,
+VA = 5 V,
+VBD = 5 V,
T
A
= 25°C
V
ref
− Reference Voltage − V
ENOB − Effective Number of Bits − Bits
ADS8380
SLAS387A – NOVEMBER 2004 – REVISED DECEMBER 2004
SIGNAL-TO-NOISE
SIGNAL-TO-NOISE RATIO AND DISTORTION
vs vs
REFERENCE VOLTAGE REFERENCE VOLTAGE
Figure 1. Figure 2.
SPURIOUS FREE DYNAMIC RANGE TOTAL HARMONIC DISTORTION
vs vs
REFERENCE VOLTAGE REFERENCE VOLTAGE
Figure 3. Figure 4.
EFFECTIVE NUMBER OF BITS EFFECTIVE NUMBER OF BITS
vs vs
REFERENCE VOLTAGE FREE-AIR TEMPERATURE
Figure 5. Figure 6.
8
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