LM9830 datasheet(3/45 Pages) NSC

3 / 45 page

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Static Offset DAC Characteristics (Configuration Registers 38, 39, and 3A)

Monotonicity

bits (min)

Offset DAC LSB size

PGA gain = 1

9.3

5.8

12.7

mV (min)

mV (max)

Offset DAC Adjustment Range

PGA gain = 1

±290

±270

mV (min)

Analog Input Characteristics

Average OSR, OSG, OSB Input Current

CDS Enabled, OS = 3.5VDC

±80

OSR, OSG, OSB Input Current

CDS Disabled, OS = 3.5VDC

±24

±30

µA (max)

Internal Voltage Reference Characteristics

VBANDGAP

Voltage Reference Output Voltage

1.2

VREF LO

Negative Reference Output Voltage

VREF MID-1.0

VREF MID

Midpoint Reference Output Voltage

VA/2.0

VREF HI

Positive Reference Output Voltage

VREF MID+1.0

DC and Logic Electrical Characteristics

The following specifications apply for AGND=DGND=DGNDI/O=DGNDSRAM=0V, VA=VD=VDI/O=VSRAM=+5.0VDC,

fCRYSTAL IN= 50MHz. Boldface limits apply for TA=TJ=TMIN to TMAX; all other limits TA=TJ=25°C. (Notes 7 & 8)

Symbol

Parameter

Conditions

Typical

(Note 9)

Limits

(Note 10)

Units

(Limits)

Digital Input Characteristics for DB0-DB7, D0-D7, STROBE, AUTOFEED, INIT, SELECT IN, PSENSE#1, PSENSE#2, MISC I/O

#1, MISC I/O #2, CMODE

VIN(1)

Logical “1” Input Voltage

VDI/O=5.5V

2.0

V (min)

VIN(0)

Logical “0” Input Voltage

VDI/O=4.5V

0.8

V (max)

IIN

Input Leakage Current

±500

CIN

Input Capacitance

Digital Output Characteristics for DB0-DB7, A0-A17, RD, WR (SRAM Interface)

VOUT(1)

Logical “1” Output Voltage

VDI/O=4.5V, IOUT=-4mA

2.4

V (min)

VOUT(0)

Logical “0” Output Voltage

VDI/O=5.5V, IOUT=8mA

0.4

V (max)

Digital Output Characteristics for D0-D7, ERROR, ACK, BUSY, PE, SELECT (Parallel Port Interface)

VOUT(1)

Logical “1” Output Voltage

VDI/O=4.5V, IOUT=-4mA

2.4

V (min)

VOUT(0)

Logical “0” Output Voltage

VDI/O=5.5V, IOUT=14mA

0.4

V (max)

Digital Output Characteristics for MISC I/O #1, MISC I/O #2, A, B, A, B, TR1, TR2, ø1, ø2, RS, CP1, CP2, TRISTATE, LATCH,

LAMPR, LAMPG, LAMPB

VOUT(1)

Logical “1” Output Voltage

VDI/O=4.5V, IOUT=-4mA

2.4

V (min)

VOUT(0)

Logical “0” Output Voltage

VDI/O=5.5V, IOUT=8mA

0.4

V (max)

Electrical Characteristics (Continued)

The following specifications apply for AGND=DGND=DGNDI/O=DGNDSRAM=0V, VA=VD=VDI/O=VSRAM=+5.0VDC,

fCRYSTAL IN= 50MHz. Boldface limits apply for TA=TJ=TMIN to TMAX; all other limits TA=TJ=25°C. (Notes 7, 8, & 12)

Symbol

Parameter

Conditions

Typical

(Note 9)

Limits

(Note 10)

Units

(Limits)

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