參數(shù)資料
型號: TDA8780M
廠商: NXP SEMICONDUCTORS
元件分類: 運動控制電子
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): 7/16頁
文件大小: 70K
代理商: TDA8780M
1995 Jul 25
7
Philips Semiconductors
Product specification
True logarithmic amplifier
TDA8780M
Note
1.
With some changes in application the lower input frequency limit can be lowered.
Output (pin 13)
V
os
V
out
DC offset voltage (V
out
to V
ref
)
output voltage level across
logarithmic range
no input signal
V
in
= 60
μ
V (
71.4 dBm)
V
in
= 400
μ
V (
54.9 dBm)
V
in
= 3 mV (
37.4 dBm)
V
in
= 25 mV (
19.0 dBm)
V
in
= 200 mV (
1.0 dBm)
V
in
= 300 mV (+2.6 dBm)
R
g
= 0; V
in
= 3 mV; see Fig.3
R
g
=
; V
in
= 3 mV; see Fig.3
V
in
= 1 V (+13.0 dBm)
60
45
200
365
530
680
710
750
+40
80
245
440
610
780
820
530
360
950
15
+140
115
290
495
690
880
930
1050
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
V
out(lim)
limiting output voltage
spread in output phase transfer
characteristic across logarithmic
range
low frequency cut-off point (3 dB)
gain flatness at 1 to 15 MHz
output resistance
f
lf
G
flat
R
13
see Fig.6
V
in
= 10 mV
0.5
150
0.1
1.5
MHz
dB
Logic input (pin 16)
V
IL
V
IH
I
LI
LOW level input voltage
HIGH level input voltage
input leakage current
0
2
1
0.8
V
P
+1
V
V
μ
A
V
IL
= 0 to V
P
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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