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參數(shù)資料
| 型號： | AD698APZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LVDT SIGNAL COND 28-PLCC |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 信號調(diào)節(jié)器 |
| 輸入類型： | 電壓 |
| 輸出類型： | 電壓 |
| 接口： | LVDT |
| 電流 - 電源： | 15mA |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-LCC（J 形引線） |
| 供應(yīng)商設(shè)備封裝： | 28-PLCC（11.51x11.51） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 791 (CN2011-ZH PDF) |
AD698
REV. B
–3–
NOTES
1A and B represent the Mean Average Deviation (MAD) of the detected sine waves V
A and VB. The polarity of VOUT is affected by the sign of the A comparator, i.e.,
multiply VOUT × +1 for ACOMP+ > ACOMP–, and VOUT × –1 for ACOMP– > ACOMP+.
2Nonlinearity of the AD698 only in units of ppm of full scale. Nonlinearity is defined as the maximum measured deviation of the AD698 output voltage from a
straight line. The straight line is determined by connecting the maximum produced full-scale negative voltage with the maximum produced full-scale positive voltage.
3See Transfer Function.
4For example, if the excitation to the primary changes by 1 dB, the gain of the system will change by typically 100 ppm.
5Output ripple is a function of the AD698 bandwidth determined by C1 and C2. A 1000 pF capacitor should be connected in parallel with R2 to reduce the output
ripple. See Figures 7, 8 and 13.
6R1 is shown in Figures 7, 8 and 13.
7Excitation voltage drift is not an important specification because of the ratiometric operation of the AD698.
8From T
MIN to TMAX the overall error due to the AD698 alone is determined by combining gain error, gain drift and offset drift. For example, the typical overall
error for the AD698AP from TMIN to TMAX is calculated as follows: Overall Error = Gain Error at +25°C (± 0.2% Full Scale) + Gain Drift from –40°C to +25°C
(20 ppm/
°C × 65°C) + Offset Drift from –40°C to +25°C (5 ppm/°C × 65°C) = ± 0.36% of full scale. Note that 1000 ppm of full scale equals 0.1% of full scale.
Specifications subject to change without notice.
Specifications shown in boldface are tested on all production units at final electrical test. Results from those tested are used to calculate outgoing quality levels.
All min and max specifications are guaranteed, although only those shown in boldface are tested on all production units.
ORDERING GUIDE
Model
Package Description
Package Option
AD698AP
28-Pin PLCC
P-28A
AD698SQ
24-Pin Double Cerdip
Q-24A
CONNECTION DIAGRAMS
28-Pin PLCC
7
8
9
10
11
5
6
28
27
26
1
2
3
4
21
22
23
24
25
19
20
12 13
14 15
16 17
18
TOP VIEW
(Not to Scale)
LEV1
LEV2
FREQ1
NC
SIG REF
SIG OUT
FEEDBACK
OUT FILT
NC = NO CONNECT
AD698
BFILT1
BFILT2
AFILT1
AFILT2
+ACOMP
FREQ2
NC
EXC2
EXC1
–V
S
+V
S
NC
–BIN
+BIN
–AIN
+AIN
–ACOMP
OFF1
OFF2
24-Pin Cerdip
13
16
15
14
24
23
22
21
20
19
18
17
TOP VIEW
(Not to Scale)
12
11
10
9
8
1
2
3
4
7
6
5
AD698
–VS
SIG REF
OFFSET2
OFFSET1
+VS
EXC1
EXC2
LEV1
OUT FILT
FEEDBACK
SIG OUT
LEV2
FREQ1
FREQ2
BFILT1
BFILT2
–BIN
–ACOMP
AFILT2
AFILT1
+BIN
–AIN
+ACOMP
+AIN
WARNING!
ESD SENSITIVE DEVICE
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 AD698 features 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.
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (+VS to –VS) . . . . . . . . . . . . . . . . . 36 V
Storage Temperature Range
P Package . . . . . . . . . . . . . . . . . . . . . . . . . –65
°C to +150°C
Q Package . . . . . . . . . . . . . . . . . . . . . . . . –65
°C to +150°C
Operating Temperature Range
AD698SQ . . . . . . . . . . . . . . . . . . . . . . . . –55
°C to +125°C
AD698AP . . . . . . . . . . . . . . . . . . . . . . . . . –40
°C to +85°C
Lead Temperature Range (Soldering 60 sec) . . . . . . . . +300
°C
Power Dissipation Derates above +65
°C
P Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mW/
°C
Q Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mW/
°C
THERMAL CHARACTERISTICS
θ
JC
θ
JA
P Package 30
°C/W
60
°C/W
Q Package 26
°C/W
62
°C/W
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