linux-stepmotor.rar_stepmotorlinux_步进电机_电机驱动linux资源-CSDN文库

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步进电机

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linux-stepmotor.rar （6个子文件）

11_stepmotor

s3c44b0-spi.h 218B

drivers

exio.o 5KB

hardware.h 7KB

doc

max504.pdf 175KB

Makefile 266B

stepmotor_main.c 1KB

_______________General Description

The MAX504/MAX515 are low-power, voltage-output,

10-bit digital-to-analog converters (DACs) specified for

single +5V power-supply operation. The MAX504 can

also be operated with ±5V supplies. The MAX515

draws only 140µA, and the MAX504 (with internal refer-

ence) draws only 260µA. The MAX515 comes in 8-pin

DIP and SO packages, while the MAX504 comes in 14-

pin DIP and SO packages. Both parts have been

trimmed for offset voltage, gain, and linearity, so no fur-

ther adjustment is necessary.

The MAX515’s buffer is fixed at a gain of 2. The MAX504’s

internal op amp may be configured for a gain of 1 or 2, as

well as for unipolar or bipolar output voltages. The

MAX504 can also be used as a four-quadrant multiplier

without external resistors or op amps.

For parallel data inputs, see the MAX503 data sheet.

For a hardware and software compatible 12-bit

upgrade, refer to the MAX531/MAX538/MAX539 data

sheet.

_______________________Applications

Battery-Powered Test Instruments

Digital Offset and Gain Adjustment

Battery-Operated/Remote Industrial Controls

Machine and Motion Control Devices

Cellular Telephones

___________________________Features

♦ Operate from Single +5V Supply

♦ Buffered Voltage Output

♦ Internal 2.048V Reference (MAX504)

♦ 140µA Supply Current (MAX515)

♦ INL = ±1/2LSB (max)

♦ Guaranteed Monotonic Over Temperature

♦ Flexible Output Ranges:

0V to V

(MAX504/MAX515)

to V

(MAX504)

♦ 8-Pin SO/DIP (MAX515)

♦ Power-On Reset

♦ Serial Data Output for Daisy-Chaining

______________Ordering Information

MAX504/MAX515

5V, Low-Power, Voltage-Output,

Serial 10-Bit DACs

________________________________________________________________

Maxim Integrated Products

VOUT

REFIN

AGND

DOUT

SCLK

DIN

DIP/SO

TOP VIEW

MAX515

_________________Pin Configurations

________________Functional Diagram

19-0280; Rev 2; 11/96

PART TEMP. RANGE PIN-PACKAGE

MAX504CPD

0°C to +70°C 14 Plastic DIP

MAX504CSD 0°C to +70°C 14 SO

DAC

10-BIT DAC REGISTER

16-BIT SHIFT REGISTER

DUMMY

BITS

CONTROL

LOGIC

POWER-UP

RESET

2.048V

REFERENCE*

AGND

SCLK

DIN

REFOUT*

REFIN

BIPOFF*

RFB*

VOUT

DGND*

DOUT

(LSB) (MSB)

CLR*

10 DATA BITS

* MAX504 ONLY

MAX504

MAX515

Refer to the MAX531/MAX538/MAX539 data sheet for military tem-

perature or die equivalents.

MAX504 appears at end of data sheet.

MAX504EPD -40°C to +85°C 14 Plastic DIP

MAX504ESD -40°C to +85°C 14 SO

MAX515CPA

0°C to +70°C 8 Plastic DIP

MAX515EPA -40°C to +85°C 8 Plastic DIP

MAX515CSA 0°C to +70°C 8 SO

MAX515ESA -40°C to +85°C 8 SO

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 408-737-7600 ext. 3468.

MAX504/MAX515

5V, Low-Power, Voltage-Output

Serial 10-Bit DACs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

to DGND and V

to AGND ................................-0.3V, +6V

to DGND and V

to AGND .................................-6V, +0.3V

to V

.................................................................-0.3V, +12V

AGND to DGND........................................................-0.3V, +0.3V

Digital Input Voltage to DGND ......................-0.3V, (V

+ 0.3V)

REFIN ..................................................(V

- 0.3V), (V

+ 0.3V)

REFOUT to AGND .........................................-0.3V, (V

+ 0.3V)

RFB .....................................................(V

- 0.3V), (V

+ 0.3V)

BIPOFF................................................(V

- 0.3V), (V

+ 0.3V)

OUT

(Note 1) ................................................................V

, V

Continuous Current, Any Pin................................-20mA, +20mA

Continuous Power Dissipation (T

= +70°C)

8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) .....727mW

8-Pin SO (derate 5.88mW/°C above +70°C)..................471mW

14-Pin Plastic DIP (derate 10.00mW/°C above +70°C) ..... 800mW

14-Pin SO (derate 8.33mW/°C above +70°C)................667mW

Operating Temperature Ranges

MAX5_ _C_ _.........................................................0°C to +70°C

MAX5_ _E_ _......................................................-40°C to +85°C

Storage Temperature Range .............................-65°C to +165°C

Lead Temperature (soldering, 10sec) .............................+300°C

ELECTRICAL CHARACTERISTICS—Single +5V Supply

= 5V, V

= 0V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT (MAX504), C

REFOUT

= 33µF (MAX504),

= 10kΩ, C

= 100pF, T

= T

MIN

to T

MAX

, unless otherwise noted.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

PARAMETER SYMBOL MIN TYP MAX UNITS

Unipolar Offset Error V

0 3 LSB

Differential Nonlinearity DNL ±1 LSB

Unipolar Offset Tempco TCV

3 ppm/°C

Gain Error (Note 2) GE ±1 LSB

Resolution N 10 Bits

Gain-Error Tempco 1 ppm/°C

Gain-Error Power-Supply

Rejection Ratio

PSRR 0.1 LSB/V

0 V

- 2

Output Voltage Range

0 V

- 0.4

Output Load Regulation 0.5 LSB

Short-Circuit Current I

12 mA

Voltage Range 0 V

- 2 V

Input Resistance 40 kΩ

Input Capacitance 10 50 pF

AC Feedthrough -80 dB

CONDITIONS

Guaranteed monotonic

4.5V ≤ V

≤ 5.5V

MAX504 (G = 1)

MAX504 (G = 2), MAX515

VOUT = 2V, R

= 2kΩ

Code dependent, minimum at code 0101...

Code dependent (Note 3)

REFIN = 1kHz, 2Vp-p

Note 1: The output may be shorted to V

, V

or AGND if the package power dissipation limit is not exceeded.

Relative Accuracy (Note 2) INL ±0.5 LSB

Unipolar Offset-Error

Power-Supply Rejection Ratio

PSRR 0.1 LSB/V4.5V ≤ V

≤ 5.5V

REFERENCE INPUT (REFIN)

VOLTAGE OUTPUT (V

OUT

)

STATIC PERFORMANCE

MAX504/MAX515

5V, Low-Power, Voltage-Output,

Serial 10-Bit DACs

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)

= 5V, V

= 0V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT (MAX504), C

REFOUT

= 33µF (MAX504),

= 10kΩ, C

= 100pF, T

= T

MIN

to T

MAX

, unless otherwise noted.)

PARAMETER

Input Current

SYMBOL MIN TYP MAX

±1

UNITS

Noise Voltage e

µA

400

Input Capacitance C

µVp-p

Power-Supply Rejection Ratio

PSRR 200 µV/V

Resistance R

REFOUT

0.5 2

Ω

Required External Capacitor C

REFOUT

3.3 µF

Output High

Input High

2.4

- 1

Input Low

0.8 V

Output Low V

0.4 V

Voltage-Output Slew Rate SR 0.15 0.25 V/µs

Voltage-Output Settling Time 25 µs

Digital Feedthrough

2.024 2.048 2.072

5 nV-s

Signal-to-Noise Plus Distortion SINAD 68 dB

260 400

CONDITIONS

= 0V or V

0.1Hz to 10kHz

4.5V ≤ V

≤ 5.5V

(Note 4)

SOURCE

= 2mA

SINK

= 2mA

= +25°C

To ±1/2LSB, VOUT = 2V

CS = V

, DIN = 100kHz

REFIN = 1kHz, 2Vp-p (G = 1 or 2),

code = 1111...

Power-Supply Current I

140 300

µA

CS Setup Time

CSS

20 ns

SCLK Fall to CS Fall Hold Time

CSH0

15 ns

SCLK Fall to CS Rise Hold Time

CSH1

0 ns

SCLK High Width t

35 ns

SCLK Low Width t

35 ns

DIN Setup Time t

45 ns

DIN Hold Time t

0 ns

DOUT Valid Propagation Delay t

= 50pF 80 ns

CS High Pulse Width

CSW

20 ns

CLR Pulse Width

CLR

25 ns

2.015 2.081

Reference Output Voltage V

2.011 2.085

CS Rise to SCLK Rise Setup Time

CS1

50 ns

= +25°C

MAX504C

MAX504E

Positive Supply Voltage V

4.5 5.5 V

REFERENCE OUTPUT (REFOUT—MAX504 Only)

DIGITAL INPUTS (DIN, SCLK, CS, CLR)

DIGITAL OUTPUT (DOUT)

DYNAMIC PERFORMANCE

POWER SUPPLY

SWITCHING CHARACTERISTICS (Note 5)

ppm/°CTemperature Coefficient TC

REFOUT

All inputs = 0V or V

output = no load

MAX504

MAX515

MAX504/MAX515

5V, Low-Power, Voltage-Output,

Serial 10-Bit DACs

4 _______________________________________________________________________________________

PARAMETER SYMBOL MIN TYP MAX UNITS

Bipolar Offset Error V

±3

Gain Error (Unipolar or Bipolar) GE

LSB

Differential Nonlinearity

±1

DNL ±1 LSB

LSB

Gain-Error Tempco

Bipolar Offset Tempco TCV

3 ppm/°C

1 ppm/°C

Gain-Error Power-Supply

Rejection Ratio

PSRR 0.1 LSB/V

Voltage Range

Resolution

+ 2 V

- 2

N 10

Input Resistance

Bits

40 kΩ

Input Capacitance 10 50 pF

AC Feedthrough -80 dB

CONDITIONS

BIPOFF = REFIN

Guaranteed monotonic

BIPOFF = REFIN

4.5V ≤ V

≤ 5.5V, -5.5V ≤ V

≤ -4.5V

Code dependent, minimum at code 0101...

Code dependent (Note 3)

REFIN = 1kHz, 2.0Vp-p

ELECTRICAL CHARACTERISTICS—Dual ±5V Supplies (MAX504 Only)

= 5V, V

= -5V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT, C

REFOUT

= 33µF, R

= 10kΩ,

= 100pF, T

= T

MIN

to T

MAX

, unless otherwise noted.)

2.024 2.048 2.072

Resistance R

REFOUT

(Note 4) 0.5 2 Ω

Power-Supply Rejection Ratio PSRR 4.5V ≤ V

≤ 5.5V 200 µV/V

0.1Hz to 10kHz 400 µVp-pNoise Voltage

Required External Capacitor C

REFOUT

3.3 µF

Input High V

2.4 V

Input Low V

0.8 V

Input Current I

= 0V or V

±1 µA

Input Capacitance C

8 pF

Output High V

SOURCE

= 2mA V

- 1 V

Output Low V

SINK

= 2mA 0.4 V

2.015 2.081

2.011 2.085

VReference Output Voltage

= +25°C

MAX504C

MAX504E

Relative Accuracy INL ±0.5 LSB

Temperature Coefficient TC

REFOUT

ppm/°C

Offset-Error Power-Supply

Rejection Ratio

PSRR 0.1 LSB/V4.5V ≤ V

≤ 5.5V, -5.5V ≤ V

≤ -4.5V

REFERENCE INPUT (REFIN)

REFERENCE OUTPUT (REFOUT—MAX504 Only)

DIGITAL INPUTS (DIN, SCLK, CS)

DIGITAL OUTPUT (DOUT)

MAX504/MAX515

5V, Low-Power, Voltage-Output,

Serial 10-Bit DACs

_______________________________________________________________________________________

Note 2: In single-supply operation, INL and GE calculated from Code 3 to Code 1023.

Note 3: Guaranteed by design.

Note 4: Tested at I

OUT

= 100µA. The reference can typically source up to 5mA (see

Typical Operating Characteristics

Note 5: The timing characteristics limits for the MAX515 are guaranteed by design.

ELECTRICAL CHARACTERISTICS—Dual ±5V Supplies (MAX504 Only) (continued)

= 5V, V

= -5V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT, C

REFOUT

= 33µF, R

= 10kΩ,

= 100pF, T

= T

MIN

to T

MAX

, unless otherwise noted.)

PARAMETER

SYMBOL MIN TYP MAX UNITS

Voltage-Output Slew Rate SR

0.15 0.25

V/µs

4.5 5.5

Positive Supply Voltage

0.5 LSB

Negative Supply Voltage

Voltage-Output Settling Time 16 µs

Signal-to-Noise Plus Distortion

5 nV-s

-5.5 0 V

Short-Circuit Current

Digital Feedthrough

SINAD

Output Load Regulation

+ 2 V

- 2

Output Voltage Range

+ 0.4 V

- 0.4

CONDITIONS

VOUT = 2V, R

= 2kΩ

To ±1/2LSB, VOUT = 2V

Step all 0s to all 1s

REFIN = 1kHz, 2Vp-p (G = 1)

REFIN = 1kHz, 2Vp-p (G = 2)

(G = 1)

(G = 2)

CS Setup Time

CSS

20 ns

SCLK Fall to CS Fall Hold Time

CSH0

15 ns

SCLK Fall to CS Rise Hold Time

CSH1

0 ns

SCLK High Width t

35 ns

SCLK Low Width t

35 ns

DIN Setup Time t

45 ns

DIN Hold Time t

0 ns

DOUT Valid Propagation Delay t

= 50pF 80 ns

CS High Pulse Width

CSW

20 ns

CLR Pulse Width

CLR

25 ns

CS Rise to SCLK Rise Setup Time

CS1

50 ns

Positive Supply Current I

260 400 µAAll inputs = 0V or V

, no load

Negative Supply Current I

-120 -200 µAAll inputs = 0V or V

, no load

VOLTAGE OUTPUT (VOUT)

DYNAMIC PERFORMANCE

POWER SUPPLY

SWITCHING CHARACTERISTICS

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2024-02-11

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