MCP37231 datasheet(21/144 Pages) MICROCHIP

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 2014-2016 Microchip Technology Inc.

DS20005322D-page 21

MCP37231/21-200 AND MCP37D31/21-200

Dynamic Accuracy(6,15)

Spurious Free Dynamic

Range

SFDR

—

dBc

fIN = 15 MHz

—

dBc

fIN = 70 MHz

Signal-to-Noise Ratio

SNR

fIN = 15 MHz

73.3

74.7

—

dBFS MCP37231/MCP37D31

—

74.2

—

dBFS MCP37221/MCP37D21

SNR

fIN = 70 MHz

—

74.2

—

dBFS MCP37231/MCP37D31

—

73.7

—

dBFS MCP37221/MCP37D21

Effective Number of Bits

(ENOB)(13)

ENOB

fIN = 15 MHz

—

12.1

—

bits

MCP37231/MCP37D31

—

bits

MCP37221/MCP37D21

ENOB

fIN = 70 MHz

—

bits

MCP37231/MCP37D31

—

11.7

—

bits

MCP37221/MCP37D21

Total Harmonic Distortion

(for all resolutions, first 13

harmonics)

THD

—

dBc

fIN = 15 MHz

—

dBc

fIN = 70 MHz

Worst Second or

Third Harmonic Distortion

HD2 or HD3

—

dBc

fIN = 15 MHz

—83

—

dBc

fIN = 70 MHz

Two-Tone Intermodulation

Distortion

fIN1 = 15 MHz,

fIN2 = 17 MHz

IMD

—

90.5

—

dBc

AIN = -7 dBFS,

with two input frequencies

Digital Logic Input and Output (Except LVDS Output)

Schmitt Trigger High-Level

Input Voltage

VIH

0.7 DVDD18

—

DVDD18

Schmitt Trigger Low-Level

Input Voltage

VIL

GND

—

0.3 DVDD18

Hysteresis of Schmitt

Trigger Inputs

(All digital inputs)

VHYST

—

0.05 DVDD18

—V

Low-Level Output Voltage

VOL

——

0.3

IOL = -3 mA, all digital I/O pins

High-Level Output Voltage

VOH

DVDD18 –0.5

1.8

—

IOL = +3 mA, all digital I/O pins

Digital Data Output (CMOS Mode)

Maximum External Load

Capacitance

CLOAD

—

From output pin to GND

Internal I/O Capacitance

CINT

—4

—

Note 5

TABLE 2-1:

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise specified, all parameters apply for TA = -40°C to +85°C, AVDD18 =DVDD18 =1.8V,

AVDD12 =DVDD12 = 1.2V, GND = 0V, SENSE = AVDD12, Single-channel mode, Differential Analog Input (AIN) = Sine wave with

amplitude of -1 dBFS, fIN = 70 MHz, Clock Input = 200 MHz, fS = 200 Msps (ADC Core), Resolution = 16-bit, PLL and decimation

filters are disabled, Output load: CMOS data pin = 10 pF, LVDS = 100

termination, LVDS driver current setting = 3.5 mA, +25°C is

applied for typical value.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

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