TLC0831C_14 Datasheet, PDF (6/21 Pages) Texas Instruments – 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL

TLC0831C, TLC0831I
TLC0832C, TLC0832I
8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL
SLAS107B – JANUARY 1995 – REVISED APRIL 1996
electrical characteristics over recommended range of operating free-air temperature, V_CC = 5 V,
f_clock = 250 kHz (unless otherwise noted)
digital section
PARAMETER
TEST CONDITIONS†
C SUFFIX
MIN TYP‡ MAX
I SUFFIX
MIN TYP‡ MAX
UNIT
VOH High-level output voltage
VOL
IIH
IIL
IOH
Low-level output voltage
High-level input current
Low-level input current
High-level output
(source) current
VCC = 4.75 V,
VCC = 4.75 V,
VCC = 4.75 V,
VIH = 5 V
VIL = 0
IOH = – 360 µA
IOH = – 10 µA
IOL = 1.6 mA
VOH ₌ VOT,A = 25°C
2.8
4.6
0.34
0.005
– 0.005
– 6.5 – 24
2.4
4.5
0.4
1
0.005
–1
– 0.005
– 6.5 – 24
V
V
1 µA
–1 µA
mA
IOL Low-level output (sink) current VOL = VCC,
TA = 25°C
8
26
IOZ
High-impedance-state output
current (DO)
VO = 5 V,
VO = 0,
TA = 25°C
TA = 25°C
0.01
3
– 0.01 – 3
Ci
Input capacitance
5
Co Output capacitance
5
† _{All parameters are measured under open-loop conditions with zero common-mode input voltage.}
‡ _{All typical values are at VCC = 5 V, TA = 25°C.}
8
26
0.01
– 0.01
5
5
mA
3
µA
–3
pF
pF
analog and converter section
PARAMETER
TEST CONDITIONS†
MIN
TYP‡ MAX UNIT
VIC
Common-mode input voltage
– 0.05
See Note 3
to
V
VCC+ 0.05
On channel
VI = 5 V
1
II(stdby) Standby input current (see Note 4)
Off channel
On channel
VI = 0
VI = 0
–1
µA
–1
Off channel
VI = 5 V
1
ri(REF) Input resistance to REF
1.3
2.4
5.9 kΩ
† _{All parameters are measured under open-loop conditions with zero common-mode input voltage.}
‡ _{All typical values are at VCC = 5 V, TA = 25°C.}
NOTES: 3. When channel IN– is more positive than channel IN+, the digital output code is 0000 0000. Connected to each analog input are two
on-chip diodes that conduct forward current for analog input voltages one diode drop above VCC. Care must be taken during testing
at low VCC levels (4.5 V) because high-level analog input voltage (5 V) can, especially at high temperatures, cause the input diode
to conduct and cause errors for analog inputs that are near full scale. As long as the analog voltage does not exceed the supply
voltage by more than 50 mV, the output code is correct. To achieve an absolute 0- to 5-V input range requires a minimum VCC of
4.95 V for all variations of temperature and load.
4. Standby input currents go in or out of the on or off channels when the A/D converter is not performing conversion and the clock is
in a high or low steady-state conditions.
total device
PARAMETER
ICC
Supply current
TLC0831
TLC0832
‡ _{All typical values are at VCC = 5 V, TA = 25°C.}
MIN TYP‡ MAX UNIT
0.6 1.25
mA
2.5 4.7
6
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