AD565 Analog Devices, AD565 Datasheet

AD565

Manufacturer Part Number

AD565

Description

High Speed 12-Bit Monolithic D/A Converters

Manufacturer

Analog Devices

Datasheet

1.AD565.pdf (11 pages)

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PRODUCT DESCRIPTION

The AD565A and AD566A are fast 12-bit digital-to-analog

converters that incorporate the latest advances in analog circuit

design to achieve high speeds at low cost.

The AD565A and AD566A use 12 precision, high-speed bipolar

current-steering switches, control amplifier and a laser-trimmed

thin-film resistor network to produce a very fast, high accuracy

analog output current. The AD565A also includes a buried

Zener reference that features low-noise, long-term stability and

temperature drift characteristics comparable to the best discrete

reference diodes.

The combination of performance and flexibility in the AD565A

and AD566A has resulted from major innovations in circuit

design, an important new high-speed bipolar process, and con-

tinuing advances in laser-wafer-trimming techniques (LWT).

The AD565A and AD566A have a 10–90% full-scale transition

time less than 35 ns and settle to within ± 1/2 LSB in 250 ns

max (350 ns for AD566A). Both are laser-trimmed at the wafer

level to ± 1/8 LSB typical linearity and are specified to ± 1/4 LSB

max error (K and T grades) at +25°C. High speed and accuracy

make the AD565A and AD566A the ideal choice for high-speed

display drivers as well as fast analog-to-digital converters.

The laser trimming process which provides the excellent linear-

ity is also used to trim both the absolute value and the tempera-

ture coefficient of the reference of the AD565A resulting in a

typical full-scale gain TC of 10 ppm/°C. When tighter TC per-

formance is required or when a system reference is available, the

AD566A may be used with an external reference.

*Covered by Patent Nos.: 3,803,590; RE 28,633; 4,213,806; 4,136,349;

REV. D

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

4,020,486; 3,747,088.

FEATURES

Single Chip Construction

Very High-Speed Settling to 1/2 LSB

Full-Scale Switching Time: 30 ns

Guaranteed for Operation with

Linearity Guaranteed Over Temperature:

Monotonicity Guaranteed Over Temperature

Low Power: AD566A = 180 mW max;

Use with On-Board High-Stability Reference (AD565A)

Low Cost

MlL-STD-883-Compliant Versions Available

AD565A: 250 ns max

AD566A: 350 ns max

AD565A with –12 V Supply: AD566A

1/2 LSB max (K, T Grades)

or with External Reference (AD566A)

AD565A = 225 mW max

12 V Supplies:

AD565A and AD566A are available in four performance

grades. The J and K are specified for use over the 0°C to +70°C

temperature range while the S and T grades are specified for the

–55°C to +125°C range. The D grades are all packaged in a

24-lead, hermetically sealed, ceramic, dual-in-line package. The

JR grade is packaged in a 28-lead plastic SOIC.

PRODUCT HIGHLIGHTS

1. The wide output compliance range of the AD565A and

2. The devices incorporate a newly developed, fully differential,

3. The devices also contain SiCr thin film application resistors

4. The AD565A and AD566A are available in versions compli-

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

GND

REF

AD566A are ideally suited for fast, low noise, accurate volt-

age output configurations without an output amplifier.

nonsaturating precision current switching cell structure

which combines the dc accuracy and stability first developed

in the AD562/3 with very fast switching times and an

optimally-damped settling characteristic.

which can be used with an external op amp to provide a

precision voltage output or as input resistors for a successive

approximation A/D converter. The resistors are matched to

the internal ladder network to guarantee a low gain tempera-

ture coefficient and are laser-trimmed for minimum

full-scale and bipolar offset errors.

ant with MIL-STD-883. Refer to the Analog Devices Mili-

tary Products Databook or current /883B data sheet for

detailed specifications.

REF OUT

19.95k

20k

19.95k

20k

Monolithic D/A Converters

–V

10V

FUNCTIONAL BLOCK DIAGRAMS

World Wide Web Site: http://www.analog.com

POWER

GND

0.5mA

AD565A*/AD566A*

REF

AD566A

AD565A

MSB

High Speed 12-Bit

CODE INPUT

OUT

REF

DAC

CODE

9.95k

LSB

BIPOLAR OFF

20V SPAN

10V SPAN

DAC OUT

20V SPAN

10V SPAN

DAC OUT

Related parts for AD565

AD565 Summary of contents

Page 1

... The laser trimming process which provides the excellent linear- ity is also used to trim both the absolute value and the tempera- ture coefficient of the reference of the AD565A resulting in a typical full-scale gain ppm/°C. When tighter TC per- formance is required or when a system reference is available, the AD566A may be used with an external reference. *Covered by Patent Nos.: 3,803,590 ...

Page 2

... V dc –2– = +15 V, unless otherwise noted.) EE AD565AK Typ Max +5.5 +0.8 +120 +300 +35 +100 12 –2.0 –2.4 ± 1.0 0.8 1 0.01 0.05 0.05 0.1 25 +10 ± 1/8 1/4 (0.003) (0.006) ± 1/4 1/2 (0.006) (0.012) ± ...

Page 3

... AD565A/AD566A AD565AT Typ Max Units +5.5 V +0.8 V µA +120 +300 µA +35 +100 12 Bits –2.0 –2.4 mA ± 1.0 1 kΩ 0.01 0. F.S. Range 0.05 0 F.S. Range ...

Page 4

AD566A–SPECIFICATIONS Model 1 DATA INPUTS (Pins 13 to 24) TTL or 5 Volt CMOS Input Voltage Bit ON Logic “1” Bit OFF Logic “0” Logic Current (Each Bit) Bit ON Logic “1” Bit OFF Logic “0” RESOLUTION OUTPUT Current Unipolar ...

Page 5

... Two (2): Bipolar Operation at Digital Input Only + +10 V, Unipolar 10 Bits (± 0.05% of Reduced F.S.) for Reference Voltage 40 kHz typ 5 mA/µs 1 mA/µs 1.5 µs to 0.01% F.S. 300 kHz 1.8 MHz –5– AD565A/AD566A AD566AT Typ Max Units +5.5 V +0.8 V µA +120 +300 µA +35 ...

Page 6

... AD565A/AD566A ABSOLUTE MAXIMUM RATINGS V to Power Ground . . . . . . . . . . . . . . . . . . . . . + Power Ground (AD565A – Voltage on DAC Output (Pin – +12 V Digital Inputs (Pins 13 to 24) to Power Ground . . . . . . . . . . . . . . . . . . . . . . –1 +7.0 V REF IN to Reference Ground . . . . . . . . . . . . . . . . . . . . ± Bipolar Offset to Reference Ground . . . . . . . . . . . . . . . ± Span R to Reference Ground . . . . . . . . . . . . . . . . ± ...

Page 7

... DAC OUT BIT BIT 10V SPAN R BIT 12 (LSB 20V SPAN R PWR GND CONNECT –7– AD565A/AD566A BIT 1 IN (MSB BIT 2 IN REF GND 3 22 BIT BIT BIT 5 IN AD566A ...

Page 8

... SPAN 10V SPAN FIGURE 3. OTHER VOLTAGE RANGES The AD565A can also be easily configured for a unipolar 0 volt 10pF to +5 volt range or ± 2.5 volt and ± 10 volt bipolar ranges by OUTPUT 0V TO ...

Page 9

... Please note that it is not necessary to trim the op amp to obtain full accuracy at room temperature. In most bipolar situations, 10pF an op amp trim is unnecessary unless the untrimmed offset drift DAC the op amp is excessive. OUT AD509 = 2.4k REF LSB –9– AD565A/AD566A R1 100 BIPOLAR OFF AD566A 9.95k 100 REF IN 19.95k 0.5mA I O ...

Page 10

... AD565A/AD566A FIGURE 6. OTHER VOLTAGE RANGES The AD566A can also be easily configured for a unipolar 0 volt to +5 volt range or ± 2.5 volt and ± 10 volt bipolar ranges by using the additional 5k application resistor provided at the 20 volt span R terminal, Pin 11. For a 5 volt span ( ± ...

Page 11

... MIN SEATING 0.070 (1.78) 0.023 (0.58) 0.100 (2.54) PLANE BSC 0.030 (0.76) 0.014 (0.36) SOIC (R-28) Package 0.7125 (18.10) 0.6969 (17.70 PIN 1 0.1043 (2.65) 0.0926 (2.35) 0.0500 0.0192 (0.49) SEATING 0.0125 (0.32) (1.27) 0.0138 (0.35) PLANE BSC 0.0091 (0.23) –11– AD565A/AD566A 0.620 (15.75) 0.590 (14.99) 0.015 (0.38) 0.008 (0.20) 0.0291 (0.74) x 45° 0.0098 (0.25) 0.0500 (1.27) 8° 0° 0.0157 (0.40) ...

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