Rainbow-electronics MAX1195 Bedienungsanleitung PDF herunterladen (Seite 5)

MAX1195

Dual, 8-Bit, 40Msps, 3V, Low-Power ADC with

Internal Reference and Parallel Outputs

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PARAMETER SYMBOL CONDITIONS MIN T YP MAX UNITS

DIGITAL INPUTS (CLK, PD, OE, SLEEP, T/B)

CLK

0.8 ×

Input High Threshold V

PD, OE, SLEEP, T/B

0.8 ×

CLK

0.2 ×

Input Low Threshold V

PD, OE, SLEEP, T/B

0.2 ×

Input Hysteresis V

HYST

0.15 V

= V

= OV

±20

Input Leakage

= 0 ±20

µA

Input Capacitance C

5pF

DIGITAL OUTPUTS ( D7A–D0A, D7B–D0B)

Output Voltage Low V

SINK

= -200µA 0.2 V

Output Voltage High V

SOURCE

= 200µA

- 0.2

Three-State Leakage Current I

LEAK

OE = OV

±10 µA

Three-State Output Capacitance C

OUT

OE = OV

5pF

POWER REQUIREMENTS

Analog Supply Voltage Range V

2.7 3 3.6 V

Output Supply Voltage Range OV

= 15pF 1.7 3 3.6 V

Operating, f

INA & B

= 20MHz at

-1dB FS applied to both channels

29 36

Sleep mode 3

Analog Supply Current I

VDD

Shutdown, clock idle, PD = OE = OV

0.1 20 µA

Operating, f

INA & B

= 20MHz at

-1dB FS applied to both channels (Note 6)

8mA

Sleep mode 3

Output Supply Current I

OVDD

Shutdown, clock idle, PD = OE = OV

310

µA

Operating, f

INA & B

= 20MHz at

-1dB FS applied to both channels

87 108

Sleep mode 9

Analog Power Dissipation PDISS

Shutdown, clock idle, PD = OE = OV

0.3 60 µW

Offset, V

±5% ±3

Power-Supply

Rejection

PSRR

Gain, V

±5% ±3

mV/V

ELECTRICAL CHARACTERISTICS (continued)

= OV

= 3V, 0.1µF and 2.2µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through a 10kΩ

resistor, V

= 2V

P-P

(differential with respect to COM), C

= 10pF at digital outputs, f

CLK

= 40MHz, T

= T

MIN

to T

MAX

, unless

otherwise noted. ≥+25°C guaranteed by production test, <+25°C guaranteed by design and characerization. Typical values are at

= +25°C.)

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