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| 型號： | TSL257T |
| 廠商： | TAOS Inc. |
| 英文描述： | HIGH-SENSITIVITY LIGHT-TO-VOLTAGE CONVERTER |
| 中文描述： | 高靈敏度光到電壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 2/10頁 |
| 文件大小： | 184K |
| 代理商： | TSL257T |
TSL257T
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS065B
APRIL 2007
2
Copyright 2007, TAOS Inc.
The
LUMENOLOGY
Company
www.taosinc.com
Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
DD
(see Note 1)
Output current, I
O
Duration of short-circuit current at (or below) 25
°
C
Operating free-air temperature range, T
A
Storage temperature range, T
stg
Solder conditions in accordance with JEDEC
J
SRD
020A, maximum temperature
6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
10 mA
5 s
25
°
C to 85
°
C
25
°
C to 85
°
C
260
°
C
. . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltages are with respect to GND.
Recommended Operating Conditions
MIN
2.7
MAX
5.5
UNIT
V
°
C
Supply voltage, V
DD
Operating free-air temperature, T
A
0
70
Electrical Characteristics at V
DD
= 5 V, T
A
= 25
°
C,
λ
p
= 640 nm, R
L
= 10 k
Ω
(unless otherwise noted)
(see Notes 2, 3, and 4)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
mV
V
D
Dark voltage
E
e
= 0
V
DD
= 4.5 V,
V
DD
= 4.5 V,
E
e
= 2.93
μ
W/cm
2
T
A
= 0
°
C to 70
°
C
See Note 5
f
ac
= 100 Hz, see Note 6
f
ac
= 1 kHz, see Note 6
E
e
= 2.93
μ
W/cm
2
0
15
V
OM
Maximum output voltage swing
No Load
R
L
= 10 k
Ω
4.49
4.2
V
4
V
O
α
VD
R
e
PSRR
Output voltage
Temperature coefficient of dark voltage (V
D
)
Irradiance responsivity
Power supply rejection ratio
pp y
1.5
2
2.5
V
15
680
55
35
μ
V/
°
C
mV/(
μ
W/cm
2
)
dB
dB
mA
I
DD
NOTES:
Supply current
2
3.8
2. Measured with R
L
= 10 k
Ω
between output and ground.
3. Optical measurements are made using small-angle incident radiation from a light-emitting diode (LED) optical source.
4. The input irradiance E
e
is supplied by an Al
I
nGaP LED with peak wavelength
λ
p
= 640 nm.
5. Irradiance responsivity is characterized over the range V
O
= 0.1 V to 4.5 V. The best-fit straight line of Output Voltage V
O
versus
Irradiance E
e
over this range will typically have a positive extrapolated V
O
value for E
e
= 0.
6. Power supply rejection ratio PSRR is defined as 20 log (
Δ
V
DD
(f)/
Δ
V
O
(f)) with V
DD
(f = 0) = 5 V and V
O
(f = 0) = 2 V.
Switching Characteristics at V
DD
= 5 V, T
A
= 25
°
C,
λ
p
= 640 nm, R
L
= 10 k
Ω
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
See Note 10 and Figure 1
See Note 10 and Figure 1
See Note 10 and Figure 1
f = dc to 1 kHz
f = 10 Hz
MIN
TYP
160
150
330
200
MAX
250
250
UNIT
μ
s
μ
s
μ
s
μ
Vrms
t
r
t
f
t
s
Output pulse rise time, 10% to 90% of final value
Output pulse fall time, 10% to 90% of final value
Output settling time to 1% of final value
Integrated noise voltage
E
e
= 0
E
e
= 0
E
e
= 0
E
e
= 0
6
V
Output noise voltage, rms
f = 100 Hz
f = 1 kHz
6
7
V/
√
Hz rms
μ
/
n
g ,
NOTE 7: Switching characteristics apply over the range V
O
= 0.1 V to 4.5 V.
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