ADS8284_14 Datasheet, PDF (28/46 Pages) Texas Instruments – ADS8284 18-BIT, 1-MSPS, Pseudo-Bipolar Differential SAR ADC with On-Chip ADC Driver (OPA) and 4-Channel Differential Multiplexer

Not Recommended for New Designs
ADS8284
SLAS628A – MARCH 2009 – REVISED APRIL 2014
Typical Characteristics (continued)
16.25
16.2
16.15
T_A = 25°C,
V_ref = 4.096 V,
VCC = 6 V,
VEE = -6 V,
+VA = 5 V,
f_i = 1.9 kHz,
Throughput = 1 MSPS
16.1
16.05
16
0
1
2
3
Multiplexer Channels
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2.04145
2.0414
2.04135
2.0413
T_A = 25°C,
V_ref = 4.096 V,
+VA = 5 V,
VCC = - VEE
2.04125
2.0412
2.04115
2.0411
2.04105
2.041
2.04095
4
4.5 5 5.5 6 6.5 7 7.5 8
V_CC - Supply Voltage - V
Figure 63. Effective Number Of Bits vs
Multiplexer Channels
4.0871
4.087
4.0869
T_A = 25°C,
V_ref = 4.096 V,
+VA = 5 V,
VCC = - VEE
Figure 64. VCM_O Voltage vs
OPA Supply Voltage (VCC)
4.0868
4.0867
4.0866
4.0865
4.0864
4
4.5 5 5.5 6 6.5 7 7.5 8
V_CC - Supply Voltage - V
Figure 65. BUF_REF Output Voltage vs
OPA Supply Voltage (VCC)
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