Datasheet.kr   

AD7393 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 AD7393은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 AD7393 자료 제공

부품번호 AD7393 기능
기능 +3 V/ Parallel Input Micropower 10- and 12-Bit DACs
제조업체 Analog Devices
로고 Analog Devices 로고


AD7393 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




전체 11 페이지수

미리보기를 사용할 수 없습니다

AD7393 데이터시트, 핀배열, 회로
a
+3 V, Parallel Input
Micropower 10- and 12-Bit DACs
FEATURES
Micropower: 100 A
0.1 A Typical Power Shutdown
Single-Supply +2.7 V to +5.5 V Operation
Compact 1.1 mm Height TSSOP-20 Package
AD7392/12-Bit Resolution
AD7393/10-Bit Resolution
0.9 LSB Differential Nonlinearity Error
APPLICATIONS
Automotive 0.5 V to 4.5 V Output Span Voltage
Portable Communications
Digitally Controlled Calibration
PC Peripherals
AD7392/AD7393
FUNCTIONAL BLOCK DIAGRAM
AD7392
VREF
12-BIT
DAC
12
DAC REGISTER
12
DGND CS DB0–DB11 RS
VDD
VOUT
SHDN
AGND
GENERAL DESCRIPTION
The AD7392/AD7393 family of 10- and 12-bit voltage-output
digital-to-analog converters is designed to operate from a single
+3 V supply. Built using a CBCMOS process, these monolithic
DACs offer the user low cost and ease of use in single-supply
+3 V systems. Operation is guaranteed over the supply voltage
range of +2.7 V to +5.5 V, making this device ideal for battery
operated applications.
The full-scale voltage output is determined by the external
reference input voltage applied. The rail-to-rail REFIN to
DACOUT allows for a full-scale voltage set equal to the positive
supply VDD or any value in between. The voltage outputs are
capable of sourcing 5 mA.
A 12-bit wide data latch loads with a 45 ns write time allowing
interface to the fastest processors without wait states.
1
AD7392
0.8
0.6
0.4
VDD = +2.7V
VREF = +2.5V
TA = 25؇C
0.2
0
؊0.2
؊0.4
؊0.6
؊0.8
؊1
0
512 1024 1536 2048 2560 3072 3584 4096
CODE – Decimal
Figure 1. AD7392 Differential Nonlinearity Error vs. Code
Additionally, an asynchronous RS input sets the output to zero
scale at power on or upon user demand.
Both parts are offered in the same pinout to allow users to select
the amount of resolution appropriate for their applications
without circuit card changes.
The AD7392/AD7393 are specified for operation over the ex-
tended industrial (–40°C to +85°C) temperature range. The
AD7393AR is specified for the –40°C to +125°C automotive
temperature range. AD7392/AD7393s are available in plastic
DIP, and 20-lead SOIC packages. The AD7393ARU is avail-
able for ultracompact applications in a thin 1.1 mm height
TSSOP-20 package.
For serial data input, 8-lead packaged versions, see the AD7390
and AD7391 products.
1
AD7393
0.8
0.6
0.4
VDD = +2.7V
VREF = +2.5V
TA = 25؇C
0.2
0
؊0.2
؊0.4
؊0.6
؊0.8
؊1
0
128 256 384 512 640 768 896 1024
CODE – Decimal
Figure 2. AD7393 Differential Nonlinearity Error vs. Code
REV. A
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999




AD7393 pdf, 반도체, 판매, 대치품
AD7392/AD7393
ABSOLUTE MAXIMUM RATINGS*
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +8 V
VREF to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD
Logic Inputs to GND . . . . . . . . . . . . . . . . . . . . . –0.3 V, +8 V
VOUT to GND . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD + 0.3 V
IOUT Short Circuit to GND . . . . . . . . . . . . . . . . . . . . . 50 mA
DGND to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +2 V
Package Power Dissipation . . . . . . . . . . . . . (TJ max – TA)/θJA
Thermal Resistance θJA
20-Lead Plastic DIP Package (N-20) . . . . . . . . . . . 57°C/W
20-Lead SOIC Package (R-20) . . . . . . . . . . . . . . . . 60°C/W
20-Lead Thin-Shrink Surface Mount (RU-20) . . . 155°C/W
Maximum Junction Temperature (TJ max) . . . . . . . . . . 150°C
Operating Temperature Range . . . . . . . . . . . –40°C to +85°C
AD7393AR . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +125°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature
N-20 (Soldering, 10 sec) . . . . . . . . . . . . . . . . . . . . . +300°C
R-20 (Vapor Phase, 60 sec) . . . . . . . . . . . . . . . . . . .+215°C
RU-20 (Infrared, 15 sec) . . . . . . . . . . . . . . . . . . . . . +220°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
1
CS
0
1
DB11–DB0
0
1
RS
0
tCS
tDS tDH
DATA VALID
tRS
FS
VOUT
ZS
؎0.1% FS
ERROR BAND
tS
Figure 3. Timing Diagram
tS
1 OF 12 LATCHES
OF THE
DAC REGISTER
DBX
CS
TO
INTERNAL
DAC
SWITCHES
RS
Figure 4. Digital Control Logic
PIN CONFIGURATIONS
VDD 1
SHDN 2
CS 3
RS 4
20 VREF
19 VOUT
18 AGND
17 DGND
D0 5
D1 6
D2 7
AD7392 16 D11
TOP VIEW 15 D10
(Not to Scale)
14 D9
D3 8
13 D8
D4 9
12 D7
D5 10
11 D6
VDD 1
SHDN 2
CS 3
RS 4
20 VREF
19 VOUT
18 AGND
17 DGND
NC 5 AD7393 16 D9
NC 6 TOP VIEW 15 D8
(Not to Scale)
D0 7
14 D7
D1 8
13 D6
D2 9
12 D5
D3 10
11 D4
NC = NO CONNECT
PIN DESCRIPTION
# Name Function
1 VDD
Positive Power Supply Input. Specified range
of operation +2.7 V to +5.5 V.
2 SHDN Power Shutdown active low input. DAC regis-
ter contents are saved as long as power stays on
the VDD pin. When SHDN = 0, CS strobes will
write new data into the DAC register.
3 CS
Chip Select latch enable, active low.
4 RS
Resets DAC register to zero condition. Asyn-
chronous active low input.
5, 6 NC
No connect Pins 5 and 6 on the AD7393.
17 DGND Digital Ground.
18 AGND Analog Ground.
19 VOUT
20 VREFIN
DAC Voltage Output.
DAC Reference Input Pin. Establishes DAC
full-scale voltage.
D0–D11 12 parallel input data bits. D11 = MSB Pin 16,
D0 = LSB Pin 5, AD7392.
D0–D9 10 parallel input data bits. D9 = MSB. Pin 16,
D0 = LSB Pin 7, AD7393.
ORDERING GUIDE
Model
Res Package
(LSB) Temp Description
Package
Option
AD7392AN 12
AD7392AR 12
AD7393AN 10
AD7393AR 10
AD7393ARU 10
XIND
XIND
XIND
AUTO
XIND
20-Lead P-DIP
20-Lead SOIC
20-Lead P-DIP
20-Lead SOIC
TSSOP-20
N-20
R-20
N-20
R-20
RU-20
NOTES
XIND = –40°C to +85°C; AUTO = –40°C to +125°C.
The AD7392 contains 709 transistors. The die size measures 78 mil × 85 mil =
6630 sq. mil.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD7392/AD7393 feature proprietary ESD protection circuitry, permanent damage
may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
–4– REV. A

4페이지










AD7393 전자부품, 판매, 대치품
100
100
IDD (A) 50 90
0
2
VOUT (V)
0
1 10
SHDN 0%
0
TIME – 100s/DIV
Figure 23. Shutdown Recovery Time
1000
AD7392
AD7392/AD7393
100
VDD = 5.5V
VREF = 2.5V
SHDN = 0V
10
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE – ؇C
Figure 24. Shutdown Current vs. Temperature
Table I. Control Logic Truth Table
CS RS DAC Register Function
H H Latched
L H Transparent
H Latched with New Data
X L Loaded with All Zeros
H Latched all Zeros
NOTE
Positive logic transition; X Don’t Care.
OPERATION
The AD7392 and AD7393 comprise a set of pin compatible,
12-bit/10-bit digital-to-analog converters. These single-supply
operation devices consume less than 100 microamps of current
while operating from power supplies in the +2.7 V to +5.5 V
range making them ideal for battery operated applications. They
contain a voltage-switched, 12-bit/10-bit, laser-trimmed digital-
to-analog converter, rail-to-rail output op amps, and a parallel-
input DAC register. The external reference input has constant
input resistance independent of the digital code setting of the
DAC. In addition, the reference input can be tied to the same
supply voltage as VDD, resulting in a maximum output voltage
span of 0 to VDD. The parallel data interface consists of 12 data
bits, DB0–DB11, for the AD7392; 10 data bits, DB0–DB9, for
the AD7393; and a CS write strobe. A RS pin is available to
reset the DAC register to zero scale. This function is useful for
power-on reset or system failure recovery to a known state.
Additional power savings are accomplished by activating the
SHDN pin, resulting in a 1.5 µA maximum consumption sleep
mode. As long as the supply voltage remains, data will be re-
tained in the DAC register to reset the DAC output when the
part is taken out of shutdown (SHDN = 1).
D/A CONVERTER SECTION
The voltage switched R-2R DAC generates an output voltage
dependent on the external reference voltage connected to the
REF pin according to the following equation:
V OUT
=V REF
×D
2N
Equation 1
where D is the decimal data word loaded into the DAC register,
and N is the number of bits of DAC resolution. In the case of
the 10-bit AD7393 using a 2.5 V reference, Equation 1 simpli-
fies to:
V OUT
=
2.5
×
D
1024
Equation 2
Using Equation 2, the nominal midscale voltage at VOUT is 1.25 V
for D = 512; full-scale voltage is 2.497 volts. The LSB step size is
= 2.5 × 1/1024 = 0.0024 volts.
For the 12-bit AD7392 operating from a 5.0 V reference Equa-
tion 1 becomes:
V OUT
=V REF
×
D
2N
Equation 3
Using Equation 3, the AD7392 provides a nominal midscale
voltage of 2.50 V for D = 2048, and a full-scale output of 4.998
volts. The LSB step size is = 5.0 × 1/4096 = 0.0012 volts.
REV. A
–7–

7페이지


구       성 총 11 페이지수
다운로드[ AD7393.PDF 데이터시트 ]

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트를 제공합니다.


구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 :     [ 홈페이지 ]     [ 블로그 1 ]     [ 블로그 2 ]



관련 데이터시트

부품번호상세설명 및 기능제조사
AD7390

3 V Serial-Input Micropower 10-Bit and 12-Bit DACs

Analog Devices
Analog Devices
AD7391

+3 Volt Serial-Input Micropower 10-Bit & 12-Bit DACs

Analog Devices
Analog Devices

DataSheet.kr       |      2020   |     연락처      |     링크모음      |      검색     |      사이트맵