ADS7824_15 Datasheet, PDF (5/21 Pages) Texas Instruments – 4 Channel, 12-Bit Sampling CMOS A/D Converter

TYPICAL PERFORMANCE CURVES
At T_A = +25°C, f_S = 40kHz, V_S1 = V_S2 = +5V, using internal reference, unless otherwise noted.
FREQUENCY SPECTRUM
(8192 Point FFT; f_IN = 1.02kHz, –0.5dB)
0
–10.0
–20.0
–30.0
–40.0
–50.0
–60.0
–70.0
–80.0
–90.0
–100.0
–110.0
0
5
10
15
20
Frequency (kHz)
ADJACENT CHANNEL CROSSTALK, WORST PAIR
(8192 Point FFT; AIN₃ = 1.02kHz, –0.1dB; AIN₂ = AGND)
0
–10.0
–20.0
–30.0
–40.0
–50.0
–60.0
–70.0
–80.0
–90.0
–100.0
–110.0
0
5
10
15
20
Frequency (kHz)
ADJACENT CHANNEL CROSSTALK, WORST PAIR
(8192 Point FFT; AIN₃ = 10.1kHz, –0.1dB; AIN₂ = AGND)
0
–10.0
–20.0
–30.0
–40.0
–50.0
–60.0
–70.0
–80.0
–90.0
–100.0
–110.0
0
5
10
15
20
Frequency (kHz)
POWER SUPPLY RIPPLE SENSITIVITY
INL/DNL DEGRADATION PER LSB OF P-P RIPPLE
1
10^–1
10^–2
INL
10^–3
10^–4
DNL
10^–5
10¹
10²
10³
10⁴
10⁵
10⁶
10⁷
Power Supply Ripple Frequency (Hz)
0.3
0.2 All Codes INL
0.1
0
–0.1
–0.2
–0.3
0
512 1024
1536 2048 2560
Decimal Code
3072
3584
4095
0.3
0.2 All Codes DNL
0.1
0
–0.1
–0.2
–0.3
0
512 1024
1536 2048 2560
Decimal Code
3072
3584
4095
2
BPZ Error
1
0
–1
–2
0.2
+FS Error
0
–0.2
0.2
–FS Error
0
–0.2
–50
–25
ENDPOINT ERRORS
0
25
50
Temperature (°C)
75
100
®
5
ADS7824