Rainbow-electronics DS1680 Bedienungsanleitung PDF herunterladen (Seite 18)

DS1680

18 of 23

3-WIRE INTERFACE CHARACTERISTICS (0°C to +70°C; V

CC

= 3.3V ± 10%)

PARAMETER SYMBOL MIN TYP MAX UNITS

NOTES

Data to Clock Setup t

DC

150 ns 8

CLK to Data Hold t

CDH

210 ns 8

CLK to Data Delay t

CDD

600 ns 8, 9, 10

CLK to Low Time t

CL

750 ns 8

CLK to High Time t

CH

750 ns 8

CLK Frequency t

CLK

0.667 MHz 8

CLK Rise and Fall t

R

, t

F

1500 ns

CS to CLK Setup t

CC

3

µs

8

CLK to CS Hold t

CCH

750 ns 8

CS Inactive Time t

CWH

3

µs

8

CS to I/O High-Z t

CDZ

210 ns 8

ADC CHARACTERISTICS (0°C to +70°C; V

CC

, V

AVD

= 5.0V ± 10%)

PARAMETER SYMBOL

MIN TYP MAX UNITS

NOTES

Resistance of Digitizer Film R

D

250 600 1000 Ω

Resistance of On-Chip Driver R

DRIVER

12 25 Ω

Parasitic Capacitance Between X-

and Y-Plates of Digitizer

C

XY

5 10 nF

Ladder Resistance R

REF

8 25 60 kΩ

ADC Active Current I

AVDA

450 650 µA 5

ADC Standby Current I

AVDS

120 200 µA 6

Reference Current I

REF

200 650 µA

Input Leakage (AIN0, AIN1) I

LI

10 nA

Analog Input Capacitance C

IN

10 15 pF

Resolution 10 Bits

Differential Nonlinearity E

DL

±0.5 ±1.0 LSB

Integral Nonlinearity E

IL

±0.5 ±1.0 LSB

Offset Error E

OS

±1.0 ±1.5 LSB

Gain Error E

G

±0.25 ±1.0 %

ADC Clock Frequency F

OSCIN

5.0 MHz

Multiplexer Selector Path

Propagation Delay

t

MUX

60 ns

COEN Falling Edge to Data Bus

Driven

t

OEA

40 ns

COEN Rising Edge to Data Bus

High-Z

t

OEZ

40 ns

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