TLC3544_07 Datasheet, PDF (8/42 Pages) Texas Instruments – 5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS

TLC3544, TLC3548
5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL
ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS
SLAS266C – OCTOBER 2000 – REVISED MAY 2003
general electrical characteristics over recommended operating free-air temperature range,
single-ended input, normal long sampling, 200 KSPS, AV_DD = 5 V, external reference (V_REFP = 4V,
V_REFM = 0 V) or internal reference, SCLK frequency = 25 MHz, fixed channel at CONV mode 00,
analog input signal source resistance = 25 Ω (unless otherwise noted) (continued)
PARAMETER
TEST CONDITIONS
MIN TYP^† MAX UNIT
DC Accuracy—Normal Short Sampling
EL
Integral linearity error
ED
Differential linearity error
EO
Zero offset error
E(g+)
Gain error
AC Accuracy—Normal Long Sampling
See Note 3
See Note 4
See Note 4
±0.8
±0.6
–3 ±0.6
0
5
LSB
LSB
3 LSB
12 LSB
SINAD
THD
SFDR
ENOB
SNR
Signal-to-noise ratio + distortion
Total harmonic distortion
Spurious free dynamic range
Effective number of bits
Signal-to-noise ratio
Channel-to-channel isolation (see
Notes 2 and 5)
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
Fixed channel in conversion mode 00, fi = 35 kHz
78.6 80.8
dB
77.6
–95 –90
dB
–88
90
97
dB
89
12.8 13.1
Bits
12.6
79
81
dB
78
100
dB
Analog input bandwidth
Full power bandwidth, –1 dB
Full power bandwidth, –3 dB
2
MHz
2.5
AC Accuracy—Normal Short Sampling
SINAD
THD
SNR
ENOB
SFDR
Signal-to-noise ratio + distortion
Total harmonic distortion
Signal-to-noise ratio
Effective number of bits
Spurious free dynamic range
Channel-to-channel isolation (see
Notes 2 and 5)
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
Fixed channel in conversion mode 00, fi = 35 kHz
78.9
dB
77.6
–95
dB
–88
79
dB
78
12.8
Bits
12.6
97
dB
89
100
dB
Analog input bandwidth
Full power bandwidth, –1 dB
Full power bandwidth, –3 dB
2
2.5
MHz
† _{All typical values are at TA = 25°C.}
NOTES: 2. This is for a fixed channel in conversion mode 00 or 01. When switching the channels, additional multiplexer setting time is required
to overcome the memory effect of the charge redistribution DAC (refer to Figure 8).
3. Linear error is the maximum deviation from the best fit straight line through the A/D transfer characteristics.
4. Zero offset error is the difference between 0000000000000 and the converted output for zero input voltage; gain error is the
difference between 11111111111111 and the converted output for full-scale input voltage. The full-scale input voltage is equal to the
reference voltage being used.
5. It is measured by applying a full-scale of 35 kHz signal to other channels and determining how much the signal is attenuated in the
channel of interest. The converter samples this examined channel continuously. The channel-to-channel isolation is degraded if the
converter samples different channels alternately (refer to Figure 8).
8
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