LM9801 datasheet(4/34 Pages) NSC

4 / 34 page

Electrical Characteristics (Continued)

The following specifications apply for AGND e DGND e DGND(IO) e 0V VA e VD ea50VDC VD(IO) ea50 or

30VDC REF IN ea1225VDC fMCLK e 20 MHz RS e 25X All LSB units are ADC LSBs unless otherwise specified

Boldface limits apply for TA e TJ e TMIN to TMAX all other limits TA e TJ e 25 C (Notes 7 8 and 11)

Symbol

Parameter

Conditions

Typical

Limits

Units

(Note 9)

(Note 10)

(Limits)

SYSTEM CHARACTERISTICS

Full Channel Gain Error

VGA Gain e 1 PGA Gain e 1

% (max)

VOS1

Pre-PGA Offset Error

VGA Gain e 1 Offset DAC e 0

LSB

VOS2

Post-PGA Offset Error

Offset Add e 0

LSB

REFERENCE AND ANALOG INPUT CHARACTERSTICS

OS Input Capacitance

OS Input Leakage Current

Measured with OS e 245VDC

nA (max)

RREF

ADC Reference Ladder (REF OUTHI to

950

500

(min)

REF IN) Impedance

1400

(max)

REF IN

Reference Voltage (Note 13)

1225

119

V (min)

126

V (max)

DC and Logic Electrical Characteristics

The following specifications apply for AGND e DGND e DGND(IO) e 0V VA e VD ea50VDC VD(IO) ea50 or

30VDC REF IN ea1225VDC fMCLK e 20 MHz Rs e 25X Boldface limits apply for TA e TJ e TMIN to TMAX all

other limits TA e TJ e 25 C (Notes 7 and 8)

Symbol

Parameter

Conditions

Typical

Limits

Units

(Note 9)

(Note 10)

(Limits)

CD0 – CD7 MCLK SYNC SDI SCLK CS RD DIGITAL INPUT CHARACTERISTICS

VIN(1)

Logical ‘‘1’’ Input Voltage

VD(IO) e 525V

V (min)

VD(IO) e 36V

V (min)

VIN(0)

Logical ‘‘0’’ Input Voltage

VD(IO) e 475V

V (max)

VD(IO) e 27V

V (max)

IIN

Input Leakage Current

VIN e VD

VIN e DGND

CIN

Input Capacitance

DD0 – DD7 EOC CCLK SDO DIGITAL OUTPUT CHARACTERISTICS

VOUT(1)

Logical ‘‘1’’ Output Voltage

VD(IO) e 475V IOUT eb360 mA

V (min)

VD(IO) e 475V IOUT eb10 mA

V (min)

VD(IO) e 27V IOUT eb360 mA

V (min)

VD(IO) e 27V IOUT eb10 mA

V (min)

VOUT(0)

Logical ‘‘0’’ Output Voltage

VD(IO) e 525V IOUT e 16 mA

V (max)

VD(IO) e 36V IOUT e 16 mA

V (max)

IOUT

TRI-STATE Output Current

VOUT e DGND

(DD0 – DD7 only)

VOUT e VD

COUT

TRI-STATE Output Capacitance

w1 w2 RS TR DIGITAL OUTPUT CHARACTERISTICS

VOUT(1)

Logical ‘‘1’’ Output Voltage

VD e 475V IOUT eb360 mA

V (min)

VD e 475V IOUT eb10 mA

V (min)

VOUT(0)

Logical ‘‘0’’ Output Voltage

VD e 525V IOUT e 16 mA

V (max)

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