X9470 datasheet(6/25 Pages) XICOR

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REV 11.16 3/20/03

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Preliminary Information

X9470

D.C. OPERATING CHARACTERISTICS

Recommended Operating Conditions: (Vcc, V+ = 4.75 to 5.25V; Vsense+, Vsense- = 26V; TA = -40°C to +85°C, unless

otherwise noted.)

Notes: (1) VOUT is a high impedance output intended for light loads only.

(2) Gain at VOUT is set to 20 by default.

(3) Value given is for VOUT. The VBIAS output will depend on the VBIAS potentiometer which is initially loaded with a zero value, then

followed by the loading of the ﬁnal value from E2 memory.

(4) Gain Error excludes the contribution of the input offset voltage error

(5) Total Error includes the contributions of gain error and input offset voltage error.

(6) Absolute Linearity is utilized to determine actual wiper voltage versus expected voltage = (Vw(n)(actual) – Vw(n)(expected))

(7) Relative Linearity is a measure of the error in step size between taps = VW(n+1) – [Vw(n) + Ml]

(8) 1 Ml = Minimum Increment = RTOT/63 or RTOT/255.

(9) Typical values are for TA = 25°C and nominal supply voltage, VCC = 5V

(10) This parameter is not 100% tested.

(10)

Settling Time

µs

Final value ±1%, RL = 10kΩ,

1nF,

∆VBIAS = 20mV

tSHDN

Time for

SHDN pin (delay) valid

0.1

1.0

µs

PSRR

Power Supply Rejection Ratio

VCC supply VCC = 4.75 to

5.25V

Input Voltage Range

1.5

VCC – 0.5

(10)

Load Capacitance

CIN

(10)

Capacitances on Shutdown Pin

ROUT

(10)

Output Impedance

Ω

at 5MHz, 1nF load

Symbol

Parameter

Limits

Units

Test Conditions

Min.

Typ.

Max.

ICC1

(9)

V+ Active Current

CS = VCC – 0.3V, and SCL

@ max. tCYC, SDA = VCC –

0.3V, SHDN inactive

ICC2

(9)(10)

VCC Active Current

ISB

(9)

Standby Supply Current

(VCC, V+)

1.5

CS = VIL, and SCL inactive

(no clock), SDA =VIL, SHDN

active

ILI

CS, SDA, SCL, SHDN RH, RL, RW,

INC/DEC VOUT, Input Leakage

-10

µA

VIN = VSS to VCC

VIH

(10)

CS, SDA, SCL, SHDN, A0, A1, A2

HIGH Voltage

VCC x 0.7

VCC + 0.5

VIL

(10)

CS, SDA, SCL, SHDN, A0, A1, A2

LOW Voltage

–0.5

VCC x 0.3

CIN

(10)

CS, SDA, SCL, SHDN, A0, A1, A2

Capacitance

VCC = 5V, VIN = VSS,

TA = 25°C, f = 1MHz

VBIAS OUTPUT VOLTAGE FOLLOWER

Recommended Operating Conditions: (Vcc, V+ = 4.75 to 5.25V; Vsense+, Vsense- = 26V; TA = -40°C to +85°C,

unless otherwise noted.)

Symbol

Parameter

Limits

Test Conditions/Notes

Min.

Typ.

Max.

Units

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