ZXCT1080 datasheet(3/12 Pages) ZETEX

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ZXCT1080

Issue 1 - November 2007

www.zetex.com

Electrical characteristics

Test conditions TA = 25°C, VIN = 12V, VCC = 5 V, VSENSE

(a) = 100mV unless otherwise stated.

NOTES:

(a) VSENSE = "VSENSE+" - "VSENSE-"

(b) The ZXCT1080 operates from a positive power rail and the internal voltage-current converter current flow is

unidirectional; these result in the output offset voltage for VSENSE = 0V always being positive.

(c) For VSENSE > 10mV, the internal voltage-current converter is fully linear. This enables a true offset to be defined and

used. VO(10) is expressed as the variance about an output voltage of 100mV>

(d) Temperature dependent measurements are extracted from characterization and simulation results.

(e) All Min and Max specifications over full temperature range are guaranteed by design and characterisation

Symbol

Parameter

Conditions

Min(e).

Typ.

Max(e).

Units

ICC

VCC supply current

VCC = 12V,

VSENSE

(a) = 0V

25°C

120

µA

full range

145

IS+

S+ input current

VSENSE

(a) = 0V

25°C

µA

full range

IS-

S- input current

25°C

154080

VO(0)

Zero VSENSE

(a) error(b)

25°C

VO(10)

Output offset voltage(c) VSENSE

(a) = 10mV

25°C

-25

+25

full range

-55

+55

Gain

VOUT/ VSENSE

(a)

VSENSE

(a) = 10mV to

150mV

25°C

9.9

10.1

V/V

full range

9.8

10.2

VOUT TC

(d)

VOUT variation with

temperature

ppm/°C

Acc

Total output error

-3

IOH

Output source

current

VOUT = -30mV

IOL

Output sink current

VOUT = +30mV

µA

PSRR

VCC supply rejection

ratio

VCC = 4.5V to 12V

CMRR

Common-mode

sense rejection ratio

VIN = 60V to 3V

-3dB small signal

bandwidth

VSENSE

(a)

(AC) =

10mVPP

500

kHz

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