ꢍ ꢓꢋ ꢀꢙ ꢈꢉ
ꢍ ꢓꢋ ꢀꢙ ꢈꢙ
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SBAS280C − JUNE 2003 − REVISED JUNE 2004
ELECTRICAL CHARACTERISTICS
All specifications at −40°C to +85°C, AVDD = 5V, DVDD = IOVDD = 3V, f
= 40MHz, External V
REF
= +3V, V = 2.0V, FIFO disabled, and
CM
CLK
R
BIAS
= 37kΩ, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Analog Input
0dBFS
1.545V
1.227V
0.774V
V
V
V
V
REF
REF
REF
REF
−2dBFS
−6dBFS
−20dBFS
Differential input voltage (V
(AINP − AINN)
)
IN
0.155V
Common-mode input voltage (V
(AINP + AINN) / 2
)
CM
2.0
V
0dBFS
−0.1
0.1
4.7
4.2
V
V
Absolute input voltage
(AINP or AINN with respect to AGND)
−2dBFS input and smaller
Dynamic Specifications
f
CLK
Data rate
MSPS
1.25ǒ Ǔ
40MHz
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
f
IN
= 10kHz, −2dBFS
= 10kHz, −6dBFS
= 10kHz, −20dBFS
= 100kHz, −2dBFS
= 100kHz, −6dBFS
= 100kHz, −20dBFS
= 500kHz, −2dBFS
= 500kHz, −6dBFS
= 500kHz, −20dBFS
= 10kHz, −2dBFS
= 10kHz, −6dBFS
= 10kHz, −20dBFS
= 100kHz, −2dBFS
= 100kHz, −6dBFS
= 100kHz, −20dBFS
= 500kHz, −2dBFS
= 500kHz, −6dBFS
= 500kHz, −20dBFS
= 10kHz, −2dBFS
= 10kHz, −6dBFS
= 10kHz, −20dBFS
= 100kHz, −2dBFS
= 100kHz, −6dBFS
= 100kHz, −20dBFS
= 500kHz, −2dBFS
= 500kHz, −6dBFS
= 500kHz, −20dBFS
93
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
90
76
93
90
Signal-to-noise ratio (SNR)
70
76
93
90
76
−101
−103
−96
−95
−101
−98
−114
−110
−96
92
Total harmonic distortion (THD)
−90
89
76
91
89
Signal-to-noise and distortion (SINAD)
69
76
93
90
76
3
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