AD7528UQ datasheet(5/8 Pages) AD

Il numero della parte	AD7528UQ

Spiegazioni elettronici	CMOS Dual 8-Bit Buffered Multiplying DAC

Download	8 Pages

Scroll/Zoom	100%

Produttore elettronici	AD [Analog Devices]

Homepage	http://www.analog.com

Logo

5 / 8 page

AD7528

REV. B

–5–

Table I. Unipolar Binary Code Table

DAC Latch Contents

Analog Output

MSB

LSB

(DAC A or DAC B)

1 1 1 1 1 1 1 1

–V

IN

255

256









1 0 0 0 0 0 0 1

–V

IN

129

256









1 0 0 0 0 0 0 0

–V

IN

128

256









=−

V

IN

2

0 1 1 1 1 1 1 1

–V

IN

127

256









0 0 0 0 0 0 0 1

–V

IN

1

256









0 0 0 0 0 0 0 0

–V

IN

0

256









= 0

Note: 1 LSB = 2

−8

() V

IN

() = 1

256

V

IN

()

Table II. Bipolar (Offset Binary) Code Table

DAC Latch Contents Analog Output

MSB

LSB

(DAC A or DAC B)

1 1 1 1 1 1 1 1

+V

IN

127

128









1 0 0 0 0 0 0 1

1 0 0 0 0 0 0 0

0

0 1 1 1 1 1 1 1

–V

IN

1

128









0 0 0 0 0 0 0 1

–V

IN

127

128









0 0 0 0 0 0 0 0

–V

IN

128









Note: 1 LSB = 2

−7

() V

IN

() = 1

128

V

IN

()

Table III. Recommended Trim Resistor

Values vs. Grade

Trim

Resistor

J/A/S

K/B/T

L/C/U

R1; R3

1 k

500

200

R2; R4

330

150

82

VIN A

(± 10V)

AD7528

VIN B

(± 10V)

RFB B

AGND

VDD

DB0

DB7

DATA

INPUTS

DAC A/

DAC B

CS

WR

DGND

CONTROL

LOGIC

INPUT

BUFFER

OUT B

LATCH

R41

DAC B

C22

R31

DAC A

LATCH

VOUT B

AGND

RFB A

OUT A

R21

C12

VOUT A

AGND

R11

NOTES:

1R1, R2 AND R3, R4 USED ONLY IF GAIN ADJUSTMENT IS REQUIRED.

SEE TABLE III FOR RECOMMENDED VALUES.

2C1, C2 PHASE COMPENSATION (10pF–15pF) IS REQUIRED WHEN

USING HIGH SPEED AMPLIFIERS TO PREVENT RINGING OR OSCILLATION.

Figure 4. Dual DAC Unipolar Binary Operation

(2 Quadrant Multiplication); See Table I

VIN A

(± 10V)

AD7528

VIN B

(± 10V)

RFB B

AGND

VDD

DB0

DB7

DATA

INPUTS

DAC A/

DAC B

CS

WR

DGND

CONTROL

LOGIC

INPUT

BUFFER

OUT B

LATCH

R41

DAC B

C23

R31

DAC A

LATCH

VOUT B

AGND

RFB A

OUT A

R21

C13

VOUT A

AGND

R11

A1

R72

10k

R62

20k

A2

R5

20k

R11

5k

AGND

R102

20k

R92

10k

A4

R8

20k

R12

5k

AGND

A3

NOTES:

1R1, R2 AND R3, R4 USED ONLY IF GAIN ADJUSTMENT IS REQUIRED.

SEE TABLE III FOR RECOMMENDED VALUES.

ADJUST R1 FOR VOUT A = 0V WITH CODE 10000000 IN DAC A LATCH.

ADJUST R3 FOR VOUT B = 0V WITH CODE 10000000 IN DAC B LATCH.

2MATCHING AND TRACKING IS ESSENTIAL FOR RESISTOR PAIRS

R6, R7 AND R9, R10.

3C1, C2 PHASE COMPENSATION (10pF–15pF) MAY BE REQUIRED

IF A1/A3 IS A HIGH SPEED AMPLIFIER.

Figure 5. Dual DAC Bipolar Operation

(4 Quadrant Multiplication); See Table II

Codice articolo simile - AD7528UQ

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
Analog Devices	AD7528UQ	188Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B
	AD7528UQ	191Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B
	AD7528UQ	191Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B
	AD7528UQ	174Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B
	AD7528UQ	174Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B

More results

Descrizione simile - AD7528UQ

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
Analog Devices	AD7528	188Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B
	AD7528JP-REEL	191Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B
	AD7528	191Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B
	AD7628	196Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. A
	AD7628	193Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. A
	AD7528JRZ	191Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B
	AD7528JNZ	191Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B
	AD7628KNZ	196Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. A
	5962-8770102RA	174Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B
	AD7528LRZ	174Kb / 8P	CMOS Dual 8-Bit Buffered Multiplying DAC REV. B

More results

AD7528UQ Scheda tecnica(PDF) 5 Page - Analog Devices

AD7528UQ Scheda tecnica(HTML) 5 Page - Analog Devices

Codice articolo simile - AD7528UQ

Descrizione simile - AD7528UQ

Html Pages

1 2 3 4 5 6 7 8

Scheda tecnica Scarica

Link URL