External Clock Frequency Range

Low-Power, 8-Channel,

Serial 12-Bit ADCs

_______________________________________________________________________________________

3

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Small-Signal Bandwidth

-3dB rolloff

4.5

MHz

Full-Power Bandwidth

800

kHz

Internal clock

5.5

10

Conversion Time (Note 5)

External clock, 2MHz, 12 clocks/conversion

6

µs

Track/Hold Acquisition Time

1.5

µs

Aperture Delay

10

ns

Aperture Jitter

<50

ps

Internal Clock Frequency

1.7

MHz

ELECTRICAL CHARACTERISTICS (continued)

noted.)

External compensation, 4.7µF

0.1

2.0

Internal compensation (Note 6)

0.1

0.4

Used for data transfer only

10

MHz

Input Voltage Range,

Single-Ended and Differential

(Note 9)

V

Multiplexer Leakage Current

±0.01

±1

µA

Input Capacitance

(Note 6)

16

pF

VREF Output Voltage

4.076

4.096

4.116

V

VREF Short-Circuit Current

30

mA

MAX186A, MAX186B,

MAX186C

±30

±50

±30

±60

±30

±80

VREF Tempco

MAX186D

±30

ppm/°C

Load Regulation (Note 7)

0mA to 0.5mA output load

2.5

mV

Internal compensation

0

Capacitive Bypass at VREF

External compensation

4.7

µF

Internal compensation

0.01

Capacitive Bypass at REFADJ

External compensation

0.01

µF

MAX186_C

MAX186_E

MAX186_M

REFADJ Adjustment Range

±1.5

%

±VREF/2

0 to

VREF

Input Voltage Range

V

Input Current

200

350

µA

Input Resistance

12

20

k

Ω

Shutdown VREF Input Current

1.5

10

µA

Buffer Disable Threshold REFADJ

50mV

V

2.50

50mV

CONVERSION RATE

ANALOG INPUT

INTERNAL REFERENCE (MAX186 only, reference buffer enabled)

EXTERNAL REFERENCE AT VREF (Buffer disabled, VREF = 4.096V)