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ST7540
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
P37-P39
P40-P42
P43-P44
Electrical ch
aracteristics
ST7540
10/44
V
OH
High logic lev
el output
vol
t
a
g
e
I
OH
= -2mA
V
DD
-
0.75
V
V
OL
Low logic lev
el
output
vol
t
a
g
e
I
OL
= 2mA
GND
+ 0.4
V
Oscillator
Exter
nal Clock
X2 v
oltage swing
Exter
nal clock.
Figure 4
5
V
pp
Exter
nal Clock
X2 DC voltage le
vel
Exter
nal clock.
Figure 4
2.5
V
DC
XT
AL Clock duty cycle
Exter
nal clock.
40
60
%
Xtal
Cr
ystal oscillator
frequency
fundamental
16
MHz
Xtal
ESR
External oscill
ator esr
resistance
40
Ω
Xtal
CL
External oscill
ator
stabilization
capacitance
Figure 6
16
pF
T
ransmitter
I
TX_OUT
Output transmitting
current on TX_OUT
1m
A
r
m
s
V
TX_OUT
Max carrier output AC
vol
t
a
g
e
R
CL
= 1.4k
Ω
Vsense = 0V
1.75
2.3
3.5
V
PP
V
TX_OUTDC
Output DC voltage on
TX_OUT
1.7
2.1
2.5
V
HD2
TX_OUT
Second har
monic
distor
tion o
n TX_OUT
V
TX_OUT
= 2V
PP
;
Fc = 86KHz, no load
-42
dB
c
HD3
TX_OUT
Third harm
onic
distor
tion o
n TX_OUT
V
TX_OUT
= 2V
PP
;
Fc = 86KHz, no load
-49
dB
c
G accuracy
Accuracy on vo
ltage
control loop active
R
CL
= 0
Ω
-1
+1
GST
G
ST
ALC gain step control
loop gain step
0.6
1
1.4
dB
DRNG
ALC dynamic range
30
dB
C
CL
Input capacitance on
CL pin
80
pF
V
senseTH
V
oltage control loop
ref
erence threshold on
V
sense
pin
Figure 17
160
180
200
mV
PK
V
senseHYST
Hysteresis on voltage
loop reference
threshold
Figure 17
±18
mV
T
ab
le 5. Electric
al characterist
ics
(continued)
(
V
DD
= +5V
,
V
CC
=+9 V
,
V
SS
= S
V
SS
= GND = 0V
,-40°C
≤
T
A
≤
85°C
, T
J
< 125°C
,
unless otherwise specified)
Symbol
Parameter
T
est condition
Min.
T
yp.
Max.
Unit
ST7540
Electrical cha
racteristics
11/44
V
SENSE
V
SENSE
Input
impedance
36
k
Ω
CL
TH
Current control loop
ref
erence threshold on
CL pin
Figure 17
1.80
1.90
2.0
0
V
CL
HYST
Hysteresis on current
loop reference
threshold
Figure 17
210
250
290
mV
T
RxTx
Carrier activation time
Figure 21
- 600
Baud Xtal = 16MHz
1.6
ms
Figure 21
- 1200 Baud
Xtal = 16MHz
800
µ
s
Figure 21
- 2400 Baud
Xtal = 16MHz
400
µ
s
Figure 21
- 4800 Baud
Xtal = 16MHz
200
µ
s
T
ALC
Carrier stabiliza
tion
time
from STEP 16 to zero
or from st
ep 16 to step
31,
Figure 21
Xtal = 16MHz
3.2
ms
T
ST
Tstep
Figure 21
Xtal = 16MHz
200
µ
s
P
ower amplifier
PA
IN(Offse
t)
Input ter
minals
OFFSET
±18
mV
GBWP
Gain bandwidth
product
100
MHz
R
IN
Input resistance at
P
A_IN+ and P
A_IN-
pins
P
A_IN+ vs
. Vss
(1)
1
M
Ω
P
A_IN- vs. Vss
(1)
1
M
Ω
C
IN
Input capacitance at
P
A_IN+ and P
A_IN-
pins
P
A_IN+ vs
. Vss
(1)
5p
F
P
A_IN- vs. Vss
(1)
5p
F
CMRR
Common mode
rejection ratio
40
dB
T
ab
le 5. Electric
al characterist
ics
(continued)
(
V
DD
= +5V
,
V
CC
=+9 V
,
V
SS
= S
V
SS
= GND = 0V
,-40°C
≤
T
A
≤
85°C
, T
J
< 125°C
,
unless otherwise specified)
Symbol
Parameter
T
est condition
Min.
T
yp.
Max.
Unit
Electrical ch
aracteristics
ST7540
12/44
HD2
PA _
O U T
Second har
monic
distor
tion o
n P
A_OUT
V
PA
_
O U
T
= 5.6V
PP
,
V
CC
= 12V
R
LOAD
= 30
Ω
Carrier frequency:
86KHz
Figure 3
-63
dB
c
HD3
PA _
O U T
Third harm
onic
distor
tion o
n P
A_OUT
pin
V
PA
_
O U
T
= 5.6V
PP
,
V
CC
= 12V
R
LOAD
= 30
Ω
Carrier frequency:
86KHz
Figure 3
- 63
dB
c
Receiver
V
IN
Input sensitivity
(Nor
mal Mode)
0.5
2
mV
rms
Input sensitivity
(High Sens.)
250
µ
V
rms
Input sensitivity (TxD
line f
orced to “1”)
V
BU
dB/
µVr
ms
V
IN
Maximum input signal
2
V
rms
R
IN
Input impedance
80
100
140
k
Ω
V
CD
Carrier detection
sensitiv
ity
(Nor
mal Mode)
0.5
2
mV
rms
Carrier detection
sensitiv
ity
(High Sensitivity Mode)
250
µ
V
rms
Carrier detection
sensitiv
ity
(TxD f
orced to “1”)
V
BU
dB/
µVr
ms
V
BU
Band in Use Detection
Lev
e
l
83.5
86
dB/
µVr
ms
T
ab
le 5. Electric
al characterist
ics
(continued)
(
V
DD
= +5V
,
V
CC
=+9 V
,
V
SS
= S
V
SS
= GND = 0V
,-40°C
≤
T
A
≤
85°C
, T
J
< 125°C
,
unless otherwise specified)
Symbol
Parameter
T
est condition
Min.
T
yp.
Max.
Unit
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
P37-P39
P40-P42
P43-P44
ST7540
Mfr. #:
Buy ST7540
Manufacturer:
STMicroelectronics
Description:
Network Controller & Processor ICs FSK powerline transceiver
Lifecycle:
New from this manufacturer.
Delivery:
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EMS
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