Datasheet
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
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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
= 4 V,
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)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
Digital Input
V
IH
High level control in
p
ut voltage
DV
DD
= 5 V 3.8
V
V
IH
High-level control input voltage
DV
DD
= 3 V
2.1
V
V
IL
Low-level control input volta
g
e
DV
DD
= 5 V 0.8
V
V
IL
Low level
control
in ut
voltage
DV
DD
= 3 V 0.6
V
I
IH
High-level input current V
I
= DV
DD
0.005 2.5 µA
I
IL
Low-level input current V
I
= DGND –2.5 0.005 µA
Input capacitance 20 25 pF
Digital output
V
OH
Hi
g
h-level di
g
ital output,
I
O
= 02mA
DV
DD
= 5 V 4.2
V
V
OH
High level
digital
out ut
,
V
OH
at 30-pF load
I
O
= –0.2 mA
DV
DD
= 3 V 2.4
V
DV
DD
=5V
I
O
= 0.8 mA 0.4
V
OL
Low-level di
g
ital output,
DV
DD
= 5 V
I
O
= 50 µA 0.1
V
V
OL
Low level
digital
out ut
,
V
OL
at 30-pF load
DV
DD
=3V
I
O
= 0.8 mA 0.4
V
OL
DV
DD
= 3 V
I
O
=
50 µA 0.1
I
OZ
Off-state output current
V
O
= DV
DD
CS DV
0.02 1
µA
I
OZ
Off state
out ut
current
(high-impedance state)
V
O
= DGND
CS = DV
DD
–1 –0.02
µA
Power Supply
AV
DD
Su
pp
ly voltage
4.5 5 5.5 V
DV
DD
Supply voltage
2.7 5 5.5 V
I
CC
Power suppl
y
AV
DD
current-
AI
CC
Conversion clock is internal OSC,
EXT reference AV
DD
=55Vto45V
2.8 3.6
mA
I
CC
Power
su ly
current
DV
DD
current-
DI
CC
EXT. reference, AV
DD
= 5.5 V to 4.5 V,
CS
= DGND
1.2 2
mA
I
CC(SW)
Sft d l t
For all digital inputs DV
DD
or
DGND CS =DV
DD
SCLK ON 175 240
µA
I
CC(SW)
Software
power-down
power
supply
current
DGND, CS = DV
DD
,
AV
DD
= 5.5 V
SCLK OFF 20
µA
I
CC(A t d )
Auto
p
ower
-
down
p
ower
su
pp
ly
For all digital inputs DV
DD
or
DGND AV
DD
=55V
SCLK ON 175 230
µA
I
CC(Autodown)
Autopower
-
down
power
supply
current
DGND, AV
DD
= 5.5 V,
External reference
SCLK OFF 20
µA
Operating temperat re
C suffix 0 70
°C
Operating temperature
I suffix –40 85
°C
†
All typical values are at T
A
= 25°C.