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W6662CF

SCANNER ANALOG FRONT END

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Preliminary W6662CF

7.4 Digital Characteristics, continued

PARAMETER

CONDITION SYM. MIN. TYP‡ MAX. UNITS NOTES

Schmitt Input Low Threshold (VDRVDD = 5V) VT-

0.8

Voltage

V

4

Input Current

Iin

1

µA

Input Capacitance

Cin

10

pF

‡: Typical figure are at VDD = 5V and temperature = 25° C and are for design aid only, not guaranteed and not subject to

production testing.

Notes:

1: VOH = 0.9 VDRVDD.

2: VOL = 0.1 VDRVDD.

3. All digital input pin, CDSCK1, CDSCK2, ADCCLK and SCLK are exclusive.

4. CDSCK1, CDSCK2, ADCCLK and SCLK schmitt trigger input pins.

7.5 Analog Characteristics (measures from analog input to ADC output)

PARAMETER

SYM. MIN. TYP‡ MAX. UNITS TEST CONDITIONS

Analog to Digital Converter

Maximum Conversion Rate

SPS

3

MHz

Resolution

12

Bits

Integral Nonlinearity

INL

+/- 4 LSB

Differential Nonlinearity

DNL

+/- 1 LSB

Gain Error

ADGERR

2.7% FSR

Note 1

Offset Error

ADOFERR

2.7% FSR

Note 1

PGA & Offset DAC

PGA Gain Range

G

1

6.25 V/V

PGA Gain Resolution

GRES

64

steps

Note 2

Offset Range

OFS -200

200 mV

VAVDD = 5.0V

Offset Resolution

OFSRES

256

steps

Note 2

Bandgap Reference

Voltage Reference Tolerance

(VREF = 1.5V or 0.75V)

VREF

+/- +/-

1.5% 2.0%

VAVDD = 5.0V

Analog Input and Output

Linear Region of Analog Input Vin

0

3

V

Input Capacitance

Cin

10

pF

Input Leakage Current

IBIAS

0.01 µA

Total Output Noise at PGA

4

LSB

- 11 -

Publication Release Date: December 1998

Revision A1

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