- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375238 > AD774B (Analog Devices, Inc.) Complete 12-Bit A/D Converters(完備的12位A/D轉(zhuǎn)換器) PDF資料下載
參數(shù)資料
| 型號(hào)： | AD774B |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 串行ADC |
| 英文描述： | Complete 12-Bit A/D Converters(完備的12位A/D轉(zhuǎn)換器) |
| 中文描述： | 完整的12位A / D轉(zhuǎn)換器（完備的12位的A / D轉(zhuǎn)換器） |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大小： | 335K |
| 代理商： | AD774B |
FUNCTIONAL BLOCK DIAGRAM
DIGITAL
OUTPUTS
DB11 (MSB)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DB0 (LSB)
DB1
DB2
DB3
DB4
DB7
DB6
DB5
DB8
DB9
DB10
STATUS
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CC
AC
CE
REF OUT
REF IN
BIPOFF
CONTROL
CLOCK
SAR
10V
REF
MSB
LSB
3
S
T
A
T
E
O
U
T
P
U
T
B
U
F
F
E
R
S
N
Y
B
B
L
E
N
Y
B
B
L
E
N
Y
B
B
L
E
A
B
C
DIVIDER
12
12
12
19.95k
N
DAC
COMP
LOGIC
+5V SUPPLY
V
A0
BYTE ADDRESS/
SHORT CYCLE
CHIP ENABLE
+10V REFERENCE
V
+12/+15V SUPPLY
ANALOG COMMON
REFERENCE INPUT
12_
_
BIPOLAR OFFSET
10V SPAN10VIN
20V SPAN20VIN
I
DAC
I
REF
EE
V
12/8
DATA MODE SELECT
CHIP SELECT
CS
R/C
READ/ CONVERT
DIGITAL COMMON DC
AD674B/AD774B
REV. B
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.
a
Complete
12-Bit A/D Converters
AD674B*/AD774B*
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
FEATURES
Complete Monolithic 12-Bit A/D Converters with
Reference, Clock, and Three-State Output Buffers
Industry Standard Pinout
High Speed Upgrades for AD574A
8- and 16-Bit Microprocessor Interface
8
m
s (max) Conversion Time (AD774B)
15
m
s (max) Conversion Time (AD674B)
6
5 V,
6
10 V, 0-10 V, 0-20 V Input Ranges
Commercial, Industrial and Military Temperature
Range Grades
MIL-STD-883 Compliant Versions Available
PRODUCT DESCRIPTION
The AD674B and AD774B are complete 12-bit successive-
approximation analog-to-digital converters with three-state
output buffer circuitry for direct interface to 8- and 16-bit
microprocessor busses. A high precision voltage reference and
clock are included on chip, and the circuit requires only power
supplies and control signals for operation.
The AD674B and AD774B are pin compatible with the industry
standard AD574A, but offer faster conversion time and bus-
access speed than the AD574A and lower power consumption.
The AD674B converts in 15
μ
s (maximum) and the AD774B
converts in 8
μ
s (maximum).
The monolithic design is implemented using Analog Devices’
BiMOS II process allowing high performance bipolar analog cir-
cuitry to be combined on the same die with digital CMOS logic.
Offset, linearity and scaling errors are minimized by active laser-
trimming of thin-film resistors.
Five different grades are available. The J and K grades are speci-
fied for operation over the 0
°
C to +70
°
C temperature range.
The A and B grades are specified from –40
°
C to +85
°
C, the T
grade is specified from –55
°
C to +125
°
C. The J and K grades
are available in a 28-pin plastic DIP or 28-lead SOIC. All other
grades are available in a 28-pin hermetically sealed ceramic
DIP.
*Protected by U.S. Patent Nos. 4,250,445; 4,808,908; RE30586.
PRODUCT HIGHLIGHTS
1. Industry Standard Pinout: The AD674B and AD774B utilize
the pinout established by the industry standard AD574A.
2. Analog Operation: The precision, laser-trimmed scaling and
bipolar offset resistors provide four calibrated ranges: 0 to
+10 V and 0 to +20 V unipolar; –5 V to +5 V and –10 V to
+10 V bipolar. The AD674B and AD774B operate on +5 V
and
±
12 V or
±
15 V power supplies.
3. Flexible Digital Interface: On-chip multiple-mode three-state
output buffers and interface logic allow direct connection to
most microprocessors. The 12 bits of output data can be
read either as one 12-bit word or as two 8-bit bytes (one with
8 data bits, the other with 4 data bits and 4 trailing zeros).
4. The internal reference is trimmed to 10.00 volts with 1%
maximum error and 10 ppm/
°
C typical temperature coeffi-
cient. The reference is available externally and can drive up
to 2.0 mA beyond the requirements of the converter and bi-
polar offset resistors.
5. The AD674B and AD774B are available in versions compli-
ant with MIL-STD-883. Refer to the Analog Devices Mili-
tary Products Databook or current AD674B/AD774B/883B
data sheet for detailed specifications.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7750AN | Product-to-Frequency Converter |
| AD7750AR | Product-to-Frequency Converter |
| AD7751(中文) | Energy Metering IC with On-Chip Fault Detection(高精度容錯(cuò)電子能量測(cè)量芯片) |
| AD7751 | Energy Metering IC with On-Chip Fault Detection(高精度容錯(cuò)電子能量測(cè)量芯片) |
| AD7755(中文) | Energy Metering IC with Pulse Output(帶脈沖輸出的高精度電子能量測(cè)量芯片) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD774BAD | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD774BAR | 功能描述:IC ADC 12BIT W/BUFF REF 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極 |
| AD774BARZ | 功能描述:IC ADC 12BIT W/BUFF REF 28-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極 |
| AD774BBD | 功能描述:IC ADC 12BIT W/BUFF REF 28-CDIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。