ADMC401BST datasheet(3/60 Pages) AD

Part #	ADMC401BST

Description	Single-Chip, DSP-Based High Performance Motor Controller

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Manufacturer	AD [Analog Devices]

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ANALOG-TO-DIGITAL CONVERTER

Parameter

Test Conditions

Min

Typ

Max

Unit

AC SPECIFICATIONS

SNR

Signal to Noise Ratio

fIN = 1.0 kHz

68

70

dB

SNRD

Signal to Noise and Distortion

fIN = 1.0 kHz

66

69

dB

THD

Total Harmonic Distortion

fIN = 1.0 kHz

–76

–70

dB

CTLK

Channel-Channel Crosstalk

fIN = 1.0 kHz

–89

–72

dB

CMRR

Common-Mode Rejection Ratio

–90

–72

dB

PSRR

Power Supply Rejection Ratio

0.025

0.1

% FSR

ACCURACY

INL

Integral Nonlinearity

±0.6

±1.5

LSB

DNL

Differential Nonlinearity

±0.5

±1.0

LSB

No Missing Codes

12

Bits Guaranteed

Zero Error

0.1

0.25

% FSR

Gain Error

1

0.4

1.0

% FSR

TEMPERATURE DRIFT

Zero Error

0.025

% FSR

Gain Error

1

0.025

% FSR

INPUT VOLTAGE

VIN

Voltage Span

4.0

V p-p

CIN

Input Capacitance2

10

pF

CONVERSION TIME

tCONV

Total Conversion Time

All 8 Channels

1.88

µs

NOTES

1Excludes Internal Voltage Reference Error.

2Analog Input Pins VIN0 to VIN7.

Typical values are neither tested nor guaranteed.

Specifications subject to change without notice.

VOLTAGE REFERENCE

Parameter

Test Conditions

Min

Typ

Max

Unit

VREF

Output Voltage Reference

SENSE = REFCOM

1.96

2.0

2.04

V

Output Voltage Tolerance1

SENSE = REFCOM

6

mV

Output Current

1.0

mA

Load Regulation

1.0 mA Load Current

0.3

1.5

mV

Power Supply Rejection Ratio

0.1

1.5

mV

Reference Input Resistance

8

k

Ω

NOTES

1Relative tolerance due to temperature change, T

MIN to TMAX.

Specifications subject to change without notice.

POWER-ON RESET

Parameter

Test Conditions

Min

Typ

Max

Unit

VRST

Reset Threshold Voltage

3.25

4.0

V

VHYST

Hysteresis Voltage

75

mV

Specifications subject to change without notice.

(VDD = AVDD = 5 V

5%, GND = AGND = 0 V, TAMB = –40 C to +85 C, CLKIN = 13 MHz,

VIN0 to VIN7 = 4.0 V p-p, VREF = 2.0 V, unless otherwise noted)

(VDD = AVDD = 5 V

5%, GND = AGND = 0 V, TAMB = –40 C to +85 C, CLKIN = 13 MHz, VIN0 to VIN7 =

4.0 V p-p, VREF = 2.0 V, unless otherwise noted)

(GND = AGND = 0 V, TAMB = –40 C to +85 C, CLKIN = 13 MHz, unless otherwise noted)

ADMC401

–3–

REV. B

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