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| 型號(hào)： | ADADC80-Z-12 |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT INTEGRATED 32-CDIP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 40k |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 800mW |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 工作溫度： | -25°C ~ 85°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 32-CDIP（0.910"，23.12mm） |
| 供應(yīng)商設(shè)備封裝： | 32-CDIP 側(cè)面銅焊 |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 2 個(gè)單端，單極；2 個(gè)單端，雙極 |
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12-Bit Successive-Approximation
Integrated Circuit ADC
ADADC80
Rev.
E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2002–2008 Analog Devices, Inc. All rights reserved.
FEATURES
True 12-bit operation: maximum nonlinearity ±0.012%
Low gain temperature coefficient (TC): ±30 ppm/°C
maximum
Low power: 800 mW
Fast conversion time: 25 μs
Precision 6.3 V reference for external application
Short-cycle capability
Parallel data output
Monolithic DAC with scaling resistors for stability
Low chip count, high reliability
Industry-standard pin configuration
“Z” models for ±12 V supplies
FUNCTIONAL BLOCK DIAGRAM
1
32
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
BIT 12 (LSB)
BIT 1 (MSB)
DIGITAL GND
10V SPAN IN
20V SPAN IN
ANALOG GND
GAIN ADJUST
NC
5V DIGITAL
SUPPLY
COMPARATOR
IN
BIPOLAR
OFFSET OUT
NC
–15V OR –12V
STATUS
REF OUT (6.3V)
CLOCK OUT
SHORT CYCLE
CLOCK INHIBIT
15V OR 12V
EXTERNAL
CLOCK IN
CONVERT
START
ADADC80
12-BIT
SAR
12-BIT DAC
CLOCK
AND
CONTROL
CIRCUITS
REFERENCE
COMP
NC = NO CONNECT
01
20
2-
001
Figure 1.
PRODUCT DESCRIPTION
The ADADC801 is a complete 12-bit successive-approximation
analog-to-digital converter (ADC) that includes an internal
clock, reference, and comparator. Its hybrid IC design uses MSI
digital and linear monolithic chips in conjunction with a 12-bit
monolithic digital-to-analog converter (DAC) to provide
modular performance and versatility with IC size, price, and
reliability.
Important performance characteristics of the ADADC80
include a maximum linearity error of ±0.012% at 25°C,
maximum gain TC of 30 ppm/°C, typical power dissipation of
800 mW, and maximum conversion time of 25 μs. Monotonic
operation of the feedback DAC guarantees no missing codes
over the temperature range of 25°C to +85°C.
The design of the ADADC80 includes scaling resistors that
provide an analog signal range of ±2.5 V, ±5.0 V, ±10 V, 0 V to
+5.0 V, or 0 V to +10.0 V. The 6.3 V precision reference can be
used for external applications. All digital signals are fully DTL
and TTL compatible; output data is in parallel form.
The ADADC80 is available in grades specified for use over the
25°C to +85°C temperature range and is available in a 32-lead
ceramic DIP.
1 The serial output function is no longer supported on this product after
Date Code 9616.
PRODUCT HIGHLIGHTS
1.
The ADADC80 is a complete 12-bit ADC. No external
components are required to perform a conversion.
2.
A monolithic 12-bit feedback DAC is used for reduced chip
count and higher reliability.
3.
The internal buried Zener reference is laser trimmed to
6.3 V. The reference voltage is available externally and can
supply up to 1.5 mA beyond the current required for the
reference and bipolar offset.
4.
The scaling resistors are included on the monolithic DAC
for exceptional thermal tracking.
5.
The ADADC80 directly replaces other devices of this type,
providing significant increases in performance.
6.
The fast conversion rate of the ADADC80 makes it an
excellent choice for applications requiring high system
throughput rates.
7.
The short cycle and external clock options are provided
for applications requiring faster conversion speed or
lower resolution.
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