Datasheet

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SLAS345 − DECEMBER 2001
5
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electrical characteristics over recommended operating free-air temperature range,
V
DD
= 5 V, V
REF
= 4.096 V, SCLK frequency = 15 MHz (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
OH
High-level output voltage V
DD
= 4.5 V, I
OH
= −0.2 mA 3.9 V
V
OL
Low-level output voltage V
DD
= 4.5 V I
OL
= 0.8 mA 0.4 V
I
OZ
Off-state output current
V
O
= V
DD
, CS = V
DD
1 2.5
A
I
OZ
Off-state output current
(high-impedance-state)
V
O
= 0, CS
= V
DD
−1 −2.5
µA
I
IH
High-level input current V
I
= V
DD
0.005 2.5 µA
I
IL
Low-level input current V
I
= 0 −0.005 2.5 µA
I
CC
Operating supply current CS at 0 V, V
DD
= 4.5 V to 5.5 V 3.5 mA
I
CC(PD)
Power-down supply current
For all digital inputs, 0≤ V
I
≤ 0.3 V
or V
I
≥ V
DD
− 0.3 V, SCLK=V
DD
,
V
DD
= 4.5 V to 5.5 V
3 5 µA
Selected analog input channel leakage
Selected channel at V
DD
1
A
Selected analog input channel leakage
current
Selected channel at 0 V
−1
µA
C
i
Input capacitance
Analog inputs 11 14
pF
C
i
Input capacitance
Control Inputs
20 25
pF
Z
i
Input resistance V
DD
= 5.5 V 500 Ω
ac specifications (TLC3541/45)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SINAD Signal-to-noise ratio +distortion f
I
= 15 kHz at 200 KSPS 81.5 dB
SNR Signal-to-noise ratio f
I
= 15 kHz at 200 KSPS 82 dB
THD
Total harmonic distortion
TLC3541 f
I
= 15 kHz at 200 KSPS −94 −87
dB
THD Total harmonic distortion
TLC3545
f
I
= 15 kHz at 200 KSPS −94 −89
dB
ENOB Effective number of bits f
I
= 15 kHz at 200 KSPS 13.2 Bits
SFDR
Spurious free dynamic range
TLC3541 f
I
= 15 kHz at 200 KSPS −95 −87
dB
SFDR Spurious free dynamic range
TLC3545
f
I
= 15 kHz at 200 KSPS −95 −89
dB
Full-power bandwidth, −3 dB, analog input 1 MHz
Full-power bandwidth, −1 dB, analog input 500 kHz
Crosstalk 0.25 LSB 80 dB
dc specifications (TLC3541/45)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
INL Integral linearity error (see Note 1) −1 1 LSB
DNL Differential linearity error −1 0.75 1 LSB
E
O
Offset error (see Note 2)
TLC3541 −3.5 3.5
mV
E
O
Offset error (see Note 2)
TLC3545
−1 1
mV
E
G
Gain error (see Note 2)
TLC3541 −2 2
mV
E
G
Gain error (see Note 2)
TLC3545 −1.8 1.8
mV
†
All typical values are at V
DD
= 5 V, T
A
= 25°C.
NOTES: 1. Linear error is the maximum deviation from the best straight line through the A/D transfer characteristics.
2. Zero error is the difference between 0000h and the converted output for zero input voltage: full-scale error is the difference between
ideal full-scale and the converted output for full-scale input voltage.