WM0831, WM0832
Electrical Characteristics (5V)
Vcc = 5V, VREF = 5V,fCLK= 250KHz, TA = TMIN to TMAX, tr = tf = 20 ns, unless otherwise stated.
PARAMETER
Digital Inputs
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
High level output voltage
VOH
VCC = 4.75 V, IOH = -360 µA
VCC = 4.75 V, IOH = -10 µA
VCC = 5.25 V, IOH = 1.6 mA
VIH = 5 V
VIL = 0 V
VOH = 0 V
2.4
4.5
V
V
V
µA
µA
mA
Low level output voltage
High level input current
Low level input current
High level output (source)
current
Low level output (sink) current IOL
High impedance-state
output current (DO)
VOL
IIH
IIL
0.4
1
-1
0.005
-0.005
-24
IOH
-6.5
8
VOL = VCC
VO = 5 V
VO = 0 V
26
0.01
-0.01
mA
µA
µA
pF
pF
IOZ
3
-3
Input capacitance
CI
Co
5
5
Output capacitance
Converter and Multiplexer
Total unadjusted error
Differential Linearity
TUE
VREF = 5 V. (note 7)
(note 8)
±1
LSB
Bits
LSB
LSB
V
8
Supply voltage variation error Vs(error) VCC = 4.75 V to 5.25 V
±1/16
±1/16
±1/4
±1/4
Common mode error
Common mode input voltage
range
Differential mode
(note 9)
VICR
GND-0.05
VCC+0.05
Standby input leakage
current (note 10)
II(stdby)
On-channel VI = 5 V at ON ch.
Off-channel VI = 0 V at OFF ch.
On-channel VI = 0 V at ON ch.
Off-channel VI = 5 V at OFF ch.
Excluding MUX addressing time
1
-1
-1
1
µA
µA
µA
µA
clock
periods
Conversion time
tconv
8
Reference Inputs
Input resistance to
reference ladder
Ri(REF)
Can only be tested for WM0831 1.3
2.4
5.9
kΩ
Total device
Supply current WM0831
Supply current WM0832
Timing Parameters
Setup time, CS low or
WM0832 data valid before
clock
ICC
ICC
0.6
2.5
1.25
4.7
mA
mA
( note 11)
tsu
th
350
ns
ns
Hold time, WM0832 data
valid after clock
90
Propagation delay time,
output data after clock
Output disable time, DO
after CS
MSB data first. CL = 100 pF
1500
600
250
500
ns
ns
ns
ns
tpd
tdis
LSB data first.
CL = 100 pF
CL = 10 pF, RL = 10 kΩ
CL = 100 pF, RL = 2 kΩ
125
Wolfson Microelectronics
3
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
