ZXCT1008/1009/1010/1011/1012 - Current output current monitors

ZXCT current monitors with a current output convert a high-side current measurement to a ground referred current output. This greatly simplifies high-sided current measurements. The devices enable gain to be set by a single external transistor. The common-mode voltage of the monitored current can be substantially increased by the addition of 1 or 2 transistors (see AN45 for more information)

Part number		Description	VIN (V)	Accuracy @ VSENSE	Typical quiescent current (µA)	Gain output/VSENSE	Bandwidth (MHz)	Price ($) 1k†	Package
ZXCT1008		Wide ambient temperature range	2.5 to 20(1)	± 2.5% @ 100mV	4	10mA/V	2	0.400	SOT23
ZXCT1009		Current output	2.5 to 20(1)	± 2.5% @ 100mV	4	10mA/V	2	0.371	SM8 SOT23
ZXCT1010		Current output with improved offset	2.5 to 20	± 2.5% @ 100mV	3.5	10mA/V	2	0.491	SOT23-5
ZXCT1011		Improved temperature drift	2.5 to 20(1)	± 2.5% @ 100mV	4	10mA/V(2)	1.5	0.491	SOT23-5
ZXCT1012		Reduced height micro-power current monitor	2.5 to 20	± 2.5% @ 100mV	3.5	10mA/V	2	0.543	TDFN3x3-5 TSOT23-5
ZXCT1020		Precision high-side current monitor	2.7 to 20	±2% @ 100mV	25	Prog	3	0.543	SOT23-5
ZXCT1050		Wide input range current monitor	2.7 to VCC 2V	±3% @ 100mV	45	Prog	0.5	0.543	SOT23-5

(1) Relative to I_OUT
(2) Gain with R_SHUNT at 120Ω

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Design tools

Application notes AN39 - Current measurement applications handbook. {updated Jan 2008} AN45 - High voltage current monitoring using the ZXCT series in power supplies. {updated Dec 2007} Design notes DN77 - Transient and noise protection for Zetex ZXCT series current monitors. {updated Dec 2007} Spice models Click on the individual part number for product information and product model (where available). For more spice model information click here.

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