AMC1304L05-Q1 Datasheet, PDF (16/39 Pages) Texas Instruments – High-Precision, Reinforced Isolated Delta-Sigma Modulators with LDO

AMC1304L05-Q1, AMC1304L25-Q1, AMC1304M05-Q1, AMC1304M25-Q1
SBAS799 – FEBRUARY 2017
www.ti.com
Typical Characteristics (continued)
At LDOIN = 15.0 V, DVDD = 3.3 V, AINP = –50 mV to 50 mV (AMC1304x05-Q1) or –250 mV to 250 mV (AMC1304x25-Q1),
AINN = 0 V, f_CLKIN = 20 MHz, and sinc³ filter with OSR = 256, unless otherwise noted.
0
SNR (AMC1304x05-Q1)
SINAD (AMC1304x05-Q1)
-20
SNR (AMC1304x25-Q1)
SINAD (AMC1304x25-Q1)
-40
-60
-80
-100
-120
0.001
0.01
0.1
1
10
Ripple Frequency (kHz)
100
D013
Figure 18. Power-Supply Rejection Ratio vs
Ripple Frequency
SNR (AMC1304x05-Q1)
SINAD (AMC1304x05-Q1)
SNR (AMC1304x25-Q1)
SINAD (AMC1304x25-Q1)
Figure 19. Signal-to-Noise Ratio and Signal-to-Noise +
Distortion vs LDO Input Supply Voltage
SNR (AMC1304x05-Q1)
SINAD (AMC1304x05-Q1)
SNR (AMC1304x25-Q1)
SINAD (AMC1304x25-Q1)
Figure 20. Signal-to-Noise Ratio and Signal-to-Noise +
Distortion vs Temperature
SNR (AMC1304x05-Q1)
SINAD (AMC1304x05-Q1)
SNR (AMC1304x25-Q1)
SINAD (AMC1304x25-Q1)
Figure 22. Signal-to-Noise Ratio and Signal-to-Noise +
Distortion vs Input Signal Frequency
Figure 21. Signal-to-Noise Ratio and Signal-to-Noise +
Distortion vs Clock Frequency
100
SNR
95
SINAD
90
85
80
75
70
65
60
55
50
0 50 100 150 200 250 300 350 400 450 500
V_IN (mVpp)
D018
AMC1304x25-Q1
Figure 23. SNR and SINAD vs Input Signal Amplitude
16
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