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參數(shù)資料
| 型號： | LTC1531 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Self-Powered Isolated Comparator |
| 中文描述： | 自供電隔離比較 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大小： | 266K |
| 代理商： | LTC1531 |
4
LTC1531
PI
FU
CTIO
N
S
U
U
V
CC
(Pin 1):
Powered Side Power Supply.
SHDN (Pin 2):
Active Low Chip Shutdown. A low signal
causes the circuitry to power down. DATA logic output
level will be reset to zero during power-down.
ZCNEG (Pin 3):
Zero-Cross Comparator Negative Input.
ZCPOS (Pin 4):
Zero-Cross Comparator Positive Input.
V
PW
(Pin 11):
Isolated Power Supply. Connect to an
external storage capacitor.
CMPOUT (Pin 12):
Isolated Latched Comparator Data.
CMPOUT is active when V
REG
is on. The CMPOUT output
can be used on the isolated side for hysteresis (see
applications). The output will contain the result of the
previous comparison. When V
REG
is low, the CMPOUT pin
is Hi-Z.
V
REG
(Pin 13):
Isolated 2.5V Regulated Output. Pulsed on
for 100
μ
s with a maximum load current of 5mA. V
REG
also
supplies power to the CMPOUT output (Pin 12).
ISOGND (Pin 14):
Isolated Side Power Ground.
V4 (Pin 15):
Comparator Negative Input. The comparator
inputs are summed together with the comparison output
equal to (V1 + V2)/2 > (V3 + V4)/2 or equivalently (V1 – V3)
> (V4 – V2).
V3 (Pin 16):
Comparator Negative Input.
V2 (Pin 17):
Comparator Positive Input.
V1 (Pin 18):
Comparator Positive Input.
VALID (Pin 25):
Pulsed Output. Indicates when valid data
was received from the comparator. May be used to clock
DATA to external circuitry.
DATA (Pin 26):
Latched Comparator Result. DATA holds
the value of the last valid comparison result. DATA changes
only when a valid comparison was received from the
isolated side.
ZCDATA (Pin 27):
A 24
μ
s to 30
μ
s Pulsed Output. The
pulse occurs when the DATA output is high and the zero-
cross comparator inputs (ZCPLS-ZCNEG) cross zero volts
differential. Typically the zero-cross input signal is an RC
phase shifted AC sine wave. This output is a TTL level pulse
that can be used for firing an external triac.
GND (Pin 28):
Power Supply Low Impedance Ground
Connection.
I
VREG
(mA)
t
S
1531 F03
30
25
20
15
10
5
0
0
1
2
3
4
V
CC
= 4.5V
T
A
= 25
°
C
V
CC
= 5.5V
V
CC
= 5V
Figure 3. Average t
SAMPLE
vs I
VREG
TYPICAL PERFOR
M
A
CE CHARACTERISTICS
U
Figure 4. V
RMS
vs Frequency
FREQUENCY (Hz)
V
R
4500V
BREAKDOWN
LIMIT
100k
1M
100M
1531 F04
10k
10M
2500V
RMS
450mV
4.5V
45V
450V
SLEW RATE = (
π
)(f)(V
P-P
)
= (1.11)(f)(V
RMS)
= V
RMS
(1.11)(f)
50V/
μ
s
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| LTC1531CSW | 功能描述:IC COMP ISOLATED SLF-PWRD 28SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標(biāo)準(zhǔn)）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
| LTC1531CSW#PBF | 功能描述:IC COMP ISOLATED SLF-PWRD 28SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標(biāo)準(zhǔn)）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
| LTC1531CSW#TR | 功能描述:IC COMP DIFF DUAL SELFPWR 28SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標(biāo)準(zhǔn)）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
| LTC1531CSW#TRPBF | 功能描述:IC COMP ISOLATED SLF-PWRD 28SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標(biāo)準(zhǔn)）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
| LTC1531IS8 | 制造商:Linear Technology 功能描述:Self-Powered Isolated Comparator |
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