Rainbow-electronics MAX159 Bedienungsanleitung PDF herunterladen (Seite 3)

MHz

+2.7V, Low-Power, 2-Channel,

108ksps, Serial 10-Bit ADCs in 8-Pin µMAX

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

= +2.7V to +5.25V, V

REF

= 2.5V, 0.1µF capacitor at REF, f

SCLK

= 2.17MHz, 16 clocks/conversion cycle (108ksps),

CH- = GND for MAX159, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +25°C.)

CONVERSION RATE

0.5

SINK

= 16mA

Three-State Output Capacitance

pFC

OUT

CS/SHDN = V

(Note 8)

Output High Voltage

- 0.5

Output Low Voltage

0.4

SINK

= 5mA

SOURCE

= 0.5mA

Input Capacitance

pFC

Input Leakage Current

±1

µAI

= 0 or V

(Note 8)

Input Hysteresis

0.2

HYS

3.0

> 3.6V

Input Low Voltage

0.8

Input High Voltage

2.0

≤ 3.6V

Shutdown REF Input Current

0.01 10

µA

Input Resistance

18 25

kΩ

Input Current

100 140

µAV

REF

= 2.5V

Input Voltage Range (Note 7)

0 V

+ 50mV

REF

Analog Input Voltage Range

(Note 6)

REF

Input Capacitance

µAC

Multiplexer Leakage Current

±0.01 ±1

µAOn/off-leakage current, V

= 0 to V

Aperture Delay

Aperture Jitter

<50

Serial Clock Frequency

0.1 2.17

SCLK

MHz

External clock mode

Internal clock mode, for data transfer only

PARAMETER SYMBOL MIN TYP MAX UNITS

7.4

µsConversion Time (Note 5) t

CONV

5 7

T/H Acquisition Time t

ACQ

2.5

µs

CONDITIONS

External clock, f

SCLK

= 2.17MHz, 16 clock

cycles per conversion

Internal clock

Three-State Output Leakage

Current

±10

µA

CS/SHDN = V

CONVERSION RATE

ANALOG INPUTS

EXTERNAL REFERENCE

DIGITAL INPUTS (CS/SHDN, SCLK) AND DIGITAL OUTPUT (DOUT)

MAX157/MAX159

1 2 3 4 5 6 7 8 ... 15 16

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