X9521 datasheet(20/24 Pages) RENESAS

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X9521

FN8207 Rev 2.00

Page 20 of 24

September 21, 2010

POTENTIOMETER CHARACTERISTICS

Notes: 1. Power Rating between the wiper terminal RWX(n) and the end terminals RHX or RLX - for ANY tap position n, (x = 1,2).

Notes: 2.Absolute Linearity is utilized to determine actual wiper resistance versus, expected resistance = (Rwx(n)(actual) - Rwx(n)(expected)) = ±1

Ml Maximum (x = 1,2).

Notes: 3.Relative Linearity is a measure of the error in step size between taps = RWx(n + 1) - [Rwx(n) + Ml] = ±1 Ml (x = 0,1,2)

Notes: 4.1 Ml = Minimum Increment = RTOT / (Number of taps in DCP - 1).

Notes: 5.Typical values are for TA = 25°C and nominal supply voltage.

Notes: 6.This parameter is periodically sampled and not 100% tested.

Symbol

Parameter

Limits

Test Conditions/Notes

Min.

Typ.

Max.

Units

RTOL

End to End Resistance Tolerance

-20

+20

VRHx

RH Terminal Voltage (x = 1,2)

Vss

VCC

VRLx

RL Terminal Voltage (x = 1,2)

Vss

VCC

Power Rating (1)(6)

RTOTAL = 10kDCP1)

5mW

RTOTAL = 100kDCP2)

DCP Wiper Resistance

200

400



IW = 1mA, VCC = 5 V,

VRHx = Vcc, VRLx = Vss

(x = 1,2).

400

1200



IW = 1mA, VCC = 2.7 V,

VRHx = Vcc, VRLx = Vss

(x = 1,2)

Wiper Current (6)

4.4

Noise

mV/

sqt(Hz)

RTOTAL = 10k DCP1)

mV/

sqt(Hz)

RTOTAL = 100kDCP2)

Absolute Linearity (2)

-1

MI(4)

Rw(n)(actual) - Rw(n)(expected)

Relative Linearity (3)

-1

MI(4)

Rw(n + 1) - [Rw(n) + MI]

RTOTAL Temperature Coefficient

±300

ppm/°C

RTOTAL = 10kDCP1)

±300

ppm/°C

RTOTAL = 100kDCP2)

CH/CL/CW

Potentiometer Capacitances

10/10/25

See Figure 21.

twcr

Wiper Response time (6)

200

s

See Figure 25.

VTRIP

Vcc power-up DCP recall threshold

tPU

Vcc power-up DCP recall delay time (6)

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