LTC2631 datasheet(6/28 Pages) LINER

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LTC2631

2631fb

ELECTRICAL CHARACTERISTICS The l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VCC = 2.7V to 5.5V, VOUT unloaded unless otherwise speciﬁed.

LTC2631-LM12/-LM10/-LM8/-LZ12/-LZ10/-LZ8, LTC2631A-LM12/-LZ12 (VFS = 2.5V)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Reference Input

Input Voltage Range

0VCC

Resistance

160

190

220

kΩ

Capacitance

7.5

IREF

Reference Current, Power-Down Mode

DAC Powered Down

0.005

0.1

μA

Reference Output

Output Voltage

1.240

1.250

1.260

Reference Temperature Coefﬁcient

±10

ppm/°C

Output Impedance

0.5

kΩ

Capacitive Load Driving

μF

Short-Circuit Current

VCC = 5.5V; REF Shorted to GND

2.5

Digital I/O

VIL

Low Level Input Voltage (SDA and SCL)

(Note 14)

–0.5

0.3VCC

VIH

High Level Input Voltage (SDA and SCL) (Note 11)

0.7VCC

VIL(CAn)

Low Level Input Voltage on CA

(n = 0, 1)

See Test Circuit 1

0.15VCC

VIH(CAn)

High Level Input Voltage on CA

(n = 0, 1)

See Test Circuit 1

0.85VCC

RINH

Resistance from CA

n (n = 0, 1)

to VCC to Set CAn = VCC

See Test Circuit 2

kΩ

RINL

Resistance from CA

n (n = 0, 1)

to GND to Set CA

n = GND

See Test Circuit 2

kΩ

RINF

Resistance from CA

n (n = 0, 1)

to VCC or GND to Set CAn = Float

See Test Circuit 2

2MΩ

VOL

Low Level Output Voltage

Sink Current = 3mA

0.4

tOF

Output Fall Time

VO = VIH(MIN) to VO = VIL(MAX),

CB = 10pF to 400pF (Note 12)

l 20 + 0.1CB

250

tSP

Pulse Width of Spikes Suppressed by

Input Filter

050

IIN

Input Leakage

0.1VCC ≤ VIN ≤ 0.9VCC

±1

μA

CIN

I/O Pin Capacitance

(Note 8)

Capacitive Load for Each Bus Line

400

CCAn

External Capacitive Load on Address

Pin CA

n (n = 0, 1)

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