THS12082_09 Datasheet, PDF (6/42 Pages) Texas Instruments – 12-BIT, 8 MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTERS

THS12082
12-BIT, 8 MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTERS
SLAS271B – MAY 2000 – REVISED DECEMBER 2002
electrical characteristics over recommended operating conditions, V_REF = internal, f_s = 8 MSPS,
f_I = 2 MHz at –1dBFS (unless otherwise noted)
ac specifications, AV_DD = 5 V, BV_DD = DV_DD = 3.3 V, C_L < 30 pF
PARAMETER
TEST CONDITIONS
SINAD Signal-to-noise ratio + distortion
Differential mode
Single-ended mode (see Note 1)
SNR Signal-to-noise ratio
Differential mode
Single-ended mode (see Note 1)
THD Total harmonic distortion
Differential mode
Single-ended mode
ENOB
(SNR)
Effective number of bits
Differential mode
Single-ended mode (see Note 1)
SFDR Spurious free dynamic range
Differential mode
Single-ended mode
Analog Input
Full-power bandwidth with a source impedance of 150 Ω
in differential configuration.
Full scale sinewave, –3 dB
Full-power bandwidth with a source impedance of 150 Ω
in single-ended configuration.
Full scale sinewave, –3 dB
MIN
63
64
10.17
67
TYP
65
64
69
68
–70
–68
10.5
10.34
71
69
MAX
–67
UNIT
dB
dB
dB
dB
dB
dB
Bits
Bits
dB
dB
96
MHz
54
MHz
Small-signal bandwidth with a source impedance of
150 Ω in differential configuration.
100 mVpp sinewave, –3 dB
96
MHz
Small-signal bandwidth with a source impedance of
150 Ω in single-ended configuration.
100 mVpp sinewave, –3 dB
54
MHz
NOTE 1: The SNR (ENOB) and SINAD is degraded typically by 2 dB in single-ended mode when the reading of data is asynchronous to the
sampling clock.
6
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