WM0831, WM0832
Electrical Characteristics (3.3V)
V
cc
= 3.3V, f
CLK
= 250KHz, T
A
= T
MIN
to T
MAX
, tr = tf = 20 ns, unless otherwise stated.
PARAMETER
Digital Inputs
High level output voltage
Low level output voltage
High level input current
Low level input current
High level output (source)
current
Low level output (sink) current
High impedance-state
output current (DO)
Input capacitance
Output capacitance
Converter and Multiplexer
Total unadjusted error
Differential Linearity
Supply voltage variation error
Common mode error
Common mode input voltage
range
Standby input leakage
current (note 10)
SYMBOL
V
OH
V
OL
I
IH
I
IL
I
OH
I
OL
I
OZ
C
I
C
o
TUE
V
s(error)
V
ICR
I
I(stdby)
V
REF
= 3.3 V. (note 7)
(note 8)
V
CC
= 3 V to 3.6 V
Differential mode
(note 9)
On-channel VI =3.3V at ON ch.
Off-channel VI =0 V at OFF ch.
On-channel VI =0 V at ON ch.
Off-channel VI =3.3V at OFF ch.
Excluding MUX addressing time
TEST CONDITIONS
V
CC
= 3V, I
OH
= -360
µA
V
CC
= 3 V, I
OH
= -10
µA
V
CC
= 3V, I
OH
= 1.6 mA
V
IH
= 3.6 V
V
IL
= 0 V
V
OH
= 0 V, T
A
= 25
o
C
V
OL
= 0V, T
A
= 25
o
C
V
O
= 3.3V, T
A
= 25
o
C
V
O
= 0 V, T
A
= 25
o
C
MIN
2.4
2.8
0.005
-0.005
15
16
0.01
-0.01
5
5
0.4
1
-1
TYP
MAX
UNIT
V
V
V
µA
µA
mA
mA
µA
µA
pF
pF
LSB
Bits
LSB
LSB
V
µA
µA
µA
µA
clock
periods
kΩ
6.5
8
3
-3
±1
8
±1/16
±1/16
GND-0.05
V
CC
+0.05
1
-1
-1
1
8
±1/4
±1/4
Conversion time
Reference Inputs
Input resistance to
reference ladder
Total device
Supply current WM0831
Supply current WM0832
Timing Parameters
Setup time, CS low or
WM0832 data valid before
clock
Hold time, WM0832 data
valid after clock
Propagation delay time,
output data after clock
Output disable time, DO
after CS
tconv
R
i(REF)
Can only be tested for WM0831 1.3
2.4
5.9
I
CC
I
CC
t
su
( note 11)
350
0.2
1.5
0.75
2.5
mA
mA
ns
t
h
MSB data first. C
L
= 100 pF
LSB data first.
C
L
= 100 pF
C
L
= 10 pF, R
L
= 10 kΩ
CL = 100 pF, R
L
= 2 kΩ
90
200
80
80
500
200
125
250
ns
ns
ns
ns
ns
t
pd
t
dis
Wolfson Microelectronics
5
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
