Datasheet
SLAS248D − DECEMBER 1999 − REVISED SEPTEMBER 2005
www.ti.com
5
ELECTRICAL CHARACTERISTICS
Over operating free-air temperature range, AVDD = DVDD = 3.3V, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Power Supply
I
DDA
Analog supply current AV
DD
= 3.6 V 81 90 mA
I
DDD
Digital supply current DV
DD
= 3.6 V 5 10 mA
Power AV
DD
= DV
DD
= 3.6 V 270 360 mW
Power down current 20 µA
DC Characteristics
Resolution 14 Bits
DNL Differential nonlinearity ±0.6 ±1 LSB
THS1401 ±1.5 ±2.5
THS1403C/I ±1.5 ±2.5
INL Integral nonlinearity
THS1403Q
Best fit
±2 ±3
LSB
INL
Integral nonlinearity
THS1408C/I
Best fit
±3 ±5
LSB
THS1408Q/M ±3.5 ±7.5
Offset error IN+ = IN−, PGA = 0 dB 0.3 %FSR
Gain error
C and I suffix
PGA = 0 dB
1 %FSR
Gain error
Q and M suffix
PGA = 0 dB
1.75 %FSR
AC Characteristics
ENOB Effective number of bits 11.2 11.5 Bits
THS1401/3/8 f
i
= 100 kHz −81
THD Total harmonic distortion
THS1403/8 f
i
= 1 MHz −78
dB
THD
Total harmonic distortion
THS1408 f
i
= 4 MHz −77
dB
THS1401/3/8 f
i
= 100 kHz 72
SNR Signal-to-noise ratio
THS1403/8 f
i
= 1 MHz 70 72
dB
SNR
Signal-to-noise ratio
THS1408 f
i
= 4 MHz 71
dB
THS1401/3/8 f
i
= 100 kHz 70
SINAD Signal-to-noise ratio + distortion
THS1403/8 f
i
= 1 MHz 69 70
dB
SINAD
Signal-to-noise ratio + distortion
THS1408 f
i
= 4 MHz 70
dB
THS1401/3/8 f
i
= 100 kHz 80
SFDR
Spurious-free dynamic range
THS1403C/I, THS1408C/I
f
i
= 1 MHz
73 80
dB
SFDR
Spurious-free dynamic range
THS1403Q, THS1408Q/M
f
i
= 1 MHz
71 80
dB
THS1408 f
i
= 4 MHz 80
Analog input bandwidth 140 MHz