Datasheet

5
®
ADS7824
0.2

0

–0.2
–25–50 0 25 50 75 100
0.2

0

–0.2
2
1
0
–1
–2
BPZ Error
+FS Error
–FS Error
ENDPOINT ERRORS
Temperature (°C)
mV From Ideal
Percent
From Ideal
Percent
From Ideal
ADJACENT CHANNEL CROSSTALK, WORST PAIR
(8192 Point FFT; AIN
3
= 10.1kHz, –0.1dB; AIN
2
= 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
Amplitude (dB)
Frequency (kHz)
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
Amplitude (dB)
Frequency (kHz)
ADJACENT CHANNEL CROSSTALK, WORST PAIR
(8192 Point FFT; AIN
3
= 1.02kHz, –0.1dB; AIN
2
= 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
Amplitude (dB)
Frequency (kHz)
POWER SUPPLY RIPPLE SENSITIVITY
INL/DNL DEGRADATION PER LSB OF P-P RIPPLE
Power Supply Ripple Frequency (Hz)
10
1
10
2
10
3
10
4
10
5
10
6
10
7
1
10
–1

10
–2

10
–3

10
–4

10
–5
Linearity Degradation (LSB/LSB)
INL
DNL
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
0 512 1024 1536 2048 2560 3072 3584 4095
Decimal Code
12-Bit LSBs
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
12-Bit LSBs
0 512 1024 1536 2048 2560 3072 3584 4095
Decimal Code
All Codes INL
All Codes DNL