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參數(shù)資料
| 型號： | TDA8575 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 隔離放大器 |
| 英文描述： | Ground noise isolation amplifier |
| 中文描述： | ISOLATION AMPLIFIER, 20 kHz BAND WIDTH, PDIP16 |
| 封裝： | 0.300 INCH, PLASTIC, MS-001AE, SOT-38-1, DIP-16 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大小： | 114K |
| 代理商： | TDA8575 |
1996 Jul 29
8
Philips Semiconductors
Preliminary specification
Ground noise isolation amplifier
TDA8575
AC CHARACTERISTICS
V
CC
= 8.5 V; f = 1 kHz; R
s
= 0 k
; R
L
= 10 k
; T
amb
= 25
°
C; in accordance with application circuit (see Fig.9).
Notes
1.
The channel separation is dependent on the capacitor C2 connected to the IN- input. The channel separation for low
frequencies (<1 kHz) can be increased by using a larger capacitance for C2.
2.
3.
4.
The frequency response is externally fixed by the input and output coupling capacitors.
The noise output voltage is measured in a bandwidth of 20 Hz up to 20 kHz, unweighted.
The common mode rejection ratio is measured at the output with a voltage source V
cm(rms)
= 1 V and both
V
i(L)
and V
i(R)
short-circuited according to Fig.9. The common mode rejection is dependent on the capacitor C2
connected to the IN- input. The common mode rejection for low frequencies (<1 kHz) can be increased by using a
larger capacitance for C2.
Supply voltage ripple rejection is measured at the output using a ripple amplitude of 2 V (p-p).
The source resistance R
s
= 2 k
.
5.
SYMBOL
PARAMETER
CONDITIONS
MIN.
0.5
70
20
80
TYP.
MAX.
UNIT
G
v
α
cs
G
v
f
ro(L)
f
ro(H)
Z
i
Z
o
V
i(rms)(max)
maximum input voltage (RMS value)
V
no
noise output voltage
THD
total harmonic distortion
voltage gain
channel separation
channel unbalance
low frequency roll-off
high frequency roll-off
input impedance
output impedance
0
80
108
1.7
3.7
0.005
0.01
+0.5
0.5
20
123
10
5
0.01
dB
dB
dB
Hz
kHz
k
V
μ
V
%
%
R
s
= 5 k
; note 1
1 dB; note 2
1 dB
THD = 1%
unweighted; note 3
V
i(rms)
= 1 V
V
i(rms)
= 1 V;
f = 20 Hz to 20 kHz
V
i(rms)
= 1 V; R
L
= 150
THD
max
total harmonic distortion at maximum
output current
common-mode input voltage (RMS value)
common-mode rejection ratio
1
%
V
i(cm)(rms)
CMRR
66
80
80
1
V
dB
dB
R
s
= 5 k
R
s
= 0
; note 4
f = 100 Hz to 20 kHz
R
s
= 2 k
;
note 5
R
s
= 2 k
; note 5
f = 20 Hz to 20 kHz
SVRR
supply voltage ripple rejection
55
60
dB
dB
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