Datasheet


SLAS390B − JUNE 2003 − REVISED FEBRUARY 2005
www.ti.com
4
SPECIFICATIONS (CONTINUED)
T
A
= −40°C to 85°C, +VA = +5 V, +VBD = 3 V or 5 V, V
ref
= 4.096 V, f
SAMPLE
= 750 kHz (unless otherwise noted)
PARAMETER
TEST
ADS8371IB ADS8371I UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX MIN TYP MAX UNIT
Dynamic Characteristics
1 kHz −106 −100
Total harmonic distortion (THD) (see Note 1)
10 kHz −99 −96
dB
Total harmonic distortion (THD) (see Note 1)
50 kHz −92 −90
dB
100 kHz −90 −88
1 kHz 87.7 87
Signal to noise ratio (SNR) (see Note 1)
10 kHz 87.5 87
dB
Signal to noise ratio (SNR) (see Note 1)
50 kHz 87.2 87
dB
100 kHz 87 87
1 kHz 87.6 87
Signal to noise + distortion
10 kHz 87 86
dB
Signal to noise + distortion
(SINAD) (see Note 1)
50 kHz 86 85
dB
(SINAD) (see Note 1)
100 kHz 85 84
1 kHz 110 106
Spurious free dynamic range (SFDR) (see
10 kHz 100 97
dB
Spurious free dynamic range (SFDR) (see
Note 1)
50 kHz 95 92
dB
Note 1)
100 kHz 94 90
−3dB Small signal bandwidth 3 3 MHz
Voltage Reference Input
Reference voltage at REFIN, V
ref
2.5 4.096 4.2 2.5 4.096 4.2 V
Reference resistance (see Note 2) 500 500 kΩ
Reference current drain f
s
= 750 kHz 1 1 mA
(1)
Calculated on the first nine harmonics of the input frequency
(2)
Can vary ±20%