ZXCT1081_0704 Datasheet, PDF (3/12 Pages) Zetex Semiconductors – High voltage high-side current monitor

ZXCT1081
Electrical characteristics
Test conditions T_A = 25°C, V_IN = 12V, V_CC = 5 V, V_SENSE(a) = 100mV unless otherwise stated.
Symbol
I_CC
I_SENSE+
I_SENSE-
V_O(0)
V_O(10)
Parameter
V_CC supply current
SENSE+ input current
SENSE- input current
Zero V_SENSE(a) error^(b)
Output offset voltage^(c)
Gain
⌬V_OUT/⌬V_SENSE(a)
V_OUT TC^{(d) V}OUT ^{variation with}
temperature
Acc
I_OH
I_OL
PSRR
Total output error
Output source current
Output sink current
V_CC supply rejection
ratio
CMRR
Common-mode sense
rejection ratio
BW
-3dB small signal
bandwidth
Conditions
V_CC = 12V
V_SENSE(a) = 0V
V_SENSE(a) = 10mV
V_SENSE(a) = 10mV to 150mV
⌬V_OUT = -30mV
⌬V_OUT = +30mV
V_CC = 4.5V to 12V
V_IN = 40V to 3V
V_{SENSE(a) (AC)} = 10mV_PP
Min.
40
15
10
0
-30
9.95
-3
54
60
Typ.
80
30
40
10
30
1
20
60
75
500
Max.
120
60
80
35
Units
µA
µA
nA
mV
+30
mV
10.05
ppm/°C
3
%
mA
µA
dB
dB
kHz
NOTES:
(a) V_SENSE = "V_SENSE+" - "V_SENSE-"
(b) The ZXCT1081 operates from a positive power rail and the internal voltage-current converter current flow is
unidirectional; these result in the output offset voltage for V_SENSE = 0V always being positive.
(c) For V_SENSE > 10mV, the internal voltage-current converter is fully linear. This enables a true offset to be defined and
used. V_O(10) is expressed as the variance about an output voltage of 100mV>
(d) Temperature dependent measurements are extracted from characterization and simulation results.
Issue 4 - April 2007
3
© Zetex Semiconductors plc 2007
www.zetex.com