LTM9012 datasheet(4/28 Pages) LINER

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LTM9012

9012f

inTernal reFerence characTerisTics The

denotes the specifications which apply over the

full operating temperature range, otherwise specifications are at TA = 25°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VREF Output Voltage

IOUT = 0

1.225

1.250

1.275

VREF Output Temperature Drift

±25

ppm/°C

VREF Output Resistance

–400μA < IOUT < 1mA

VREF Line Regulation

1.7V < VDD < 1.9V

0.6

mV/V

DigiTal inpuTs anD ouTpuTs The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. (Note 6)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

ENCODE INPUTS (ENC+, ENC–)

Differential Encode Mode (ENC– Not Tied to GND)

VID

Differential Input Voltage

(Note 9)

0.2

VICM

Common Mode Input Voltage

Internally Set

Externally Set (Note 9)

1.1

1.2

1.6

VIN

Input Voltage Range

ENC+, ENC– to GND

0.2

3.6

RIN

Input Resistance

(See Figure 3)

kΩ

CIN

Input Capacitance

3.5

Single-Ended Encode Mode (ENC– Tied to GND)

VIH

High Level Input Voltage

VDD = 1.8V

1.26

VIL

Low Level Input Voltage

VDD = 1.8V

0.54

VIN

Input Voltage Range

ENC+ to GND

0 to 3.6

RIN

Input Resistance

(See Figure 4)

kΩ

CIN

Input Capacitance

3.5

Digital Inputs (CS, SDI, SCK in Serial or Parallel Programming Mode. SDO in Parallel Programming Mode)

VIH

High Level Input Voltage

VDD = 1.8V

1.3

VIL

Low Level Input Voltage

VDD = 1.8V

0.6

IIN

Input Current

VIN = 0V to 3.6V

–10

µA

CIN

Input Capacitance

SDO Output (Serial Programming Mode. Open-Drain Output. Requires 2k Pull-Up Resistor if SDO is Used)

ROH

Logic Low Output Resistance to GND

VDD = 1.8V, SDO = 0V

200

IOH

Logic High Output Leakage Current

SDO = 0V to 3.6V

–10

µA

COUT

Output Capacitance

Digital Input (SHDN)

VIH

High Level Input Voltage

VCC = 3.3V

0.97

1.4

VIL

Low Level Input Voltage

VCC = 3.3V

0.6

0.95

RSHDN

SHDN Pull-Up Resistor

VSHDN = 0V to 0.5V

150

210

kΩ

Digital Data Outputs

VOD

Differential Output Voltage

100Ω Differential Load, 3.5mA Mode

100Ω Differential Load, 1.75mA Mode

247

125

350

175

454

250

VOS

Common Mode Output Voltage

100Ω Differential Load, 3.5mA Mode

100Ω Differential Load, 1.75mA Mode

1.125

1.250

1.375

RTERM

On-Chip Termination Resistance

Termination Enabled, OVDD = 1.8V

100

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