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參數(shù)資料
| 型號： | TDA8780M |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | True logarithmic amplifier |
| 中文描述： | LOG OR ANTILOG AMPLIFIER, 14 MHz BAND WIDTH, PDSO20 |
| 封裝： | 4.40 MM, PLASTIC, SOT-266-1, SSOP-20 |
| 文件頁數(shù)： | 6/16頁 |
| 文件大?。?/td> | 70K |
| 代理商： | TDA8780M |
1995 Jul 25
6
Philips Semiconductors
Product specification
True logarithmic amplifier
TDA8780M
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
HANDLING
Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is
desirable to take normal precautions appropriate to handling MOS devices.
ESD in accordance with “MIL STD 883C”- “Method 3015”
CHARACTERISTICS
V
P
= 5 V; T
amb
= 25
°
C; V
ref
= 2.5 V; V
in
at f
in
= 10.7 MHz; R
g
= 3.3 k
; output not loaded; unless otherwise specified.
Signal values expressed as peak voltages mV (peak),
μ
V (peak) or dBm (50
).
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V
P
V
i
T
amb
T
stg
supply voltage
input voltage all other pins referenced to ground
operating ambient temperature
IC storage temperature
0.3
0.3
20
55
+6.0
V
P
+ 0.3
+75
+150
V
V
°
C
°
C
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
V
P
I
P
supply voltage
supply current
4.5
5.0
5.4
4.9
40
100
70
5.5
6.7
6.2
200
250
V
mA
mA
μ
A
μ
A
μ
s
V
P
= 5.5 V; V
in
= 1 V
V
P
= 5.0 V; V
in
= 1 V
output not loaded
R
L
= 10 k
see Fig.6
I
P(PD)
supply current in power-down
t
sw
switching time
Reference input (pin 8)
V
ref
R
ref
external reference voltage input
external reference resistance input
2.0
2.5
40
V
P
2.0 V
k
Inputs (pins 1 and 20)
f
in
R
diff
input operating frequency
differential small-signal input
resistance
differential input capacitance
input voltage level at start of
logarithmic characteristic
input voltage level at top end of
logarithmic characteristic
maximum input signal voltage
note 1
V
in
= 10 mV
1.0
10.7
10
15
MHz
k
C
diff
V
in(min)
2
60
pF
μ
V
V
in(top)
300
mV
V
in(max)
input protection diodes not
conducting
over whole T
amb
and V
P
range
1
V
V
in
input voltage level spread across
logarithmic range
±
2.5
dB
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