LT6658
Typical perForMance characTerisTics TA = 25°C, VIN = VIN1 = VIN2 = VOUT1_F + 2.5V =
VOUT2_F + 2.5V, COUT1 = COUT2 = 1µF, ILOAD = 0mA, unless otherwise noted.
2.5V VOUT1 AC Output Impedance
10mA Load
2.5V VOUT1 AC Output Impedance
150mA Load
2.5V VOUT2 AC Output Impedance
1mA Load
1
0.1
1
0.1
10
1
0.1
0.01
0.01
0.01
0.001
0.0001
0.001
0.001
I
= 10mA
I
= 150mA
OUT1
OUT1
I
= 1mA
OUT2
C
C
= 1µF
= 50µF
C
C
=1µF
= 50µF
OUT1
OUT1
C
C
=1µF
= 50µF
OUT1
OUT1
OUT2
OUT2
0.0001
0.0001
0.01
0.1
1
10
100
1000
0.01
0.1
1
10
100
1000
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
FREQUENCY (kHz)
FREQUENCY (kHz)
6658 G19
6658 G20
6658 G21
2.5V VOUT2 AC Output Impedance
50mA Load
2.5V Channel to Channel
Isolation VIN2 to VOUT1
2.5V Turn-On Characteristic
160
140
120
100
80
1
0.1
V
IN
5V/DIV
C
OUT1
= 1µF / C = OPEN
NR
V
BYPASS
2V/DIV
2V/DIV
2V/DIV
C
= 50µF / C =10µF
NR
OUT1
V
OUT1
0.01
C
= 10µF / C =10µF
NR
OUT1
C
C
C
= OPEN
NR
OUT1
OUT2
60
V
OUT2
= 1µF
= 1µF
40
0.001
0.0001
I
= 50mA
OUT2
6658 G23
V
= V = 7V
IN1
IN
50µs/DIV
20
V
= 6VDC + 700mV
IN2
RMS
A
C
C
= 1µF
= 50µF
OUT2
OUT2
I
= I
= 0A, T = 25°C
LOAD1 LOAD2
0
0.01
0.1
1
10
100
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
FREQUENCY (kHz)
6658 G24
6658 G22
2.5V Channel to Channel Load
Regulation (Effects of Heating
Removed)
2.5V Channel to Channel
Isolation VIN1 to VOUT2
2.5V Channel to Channel
Isolation, Time Domain
20
18
16
14
12
10
8
C
= 10µF / C =10µF
NR
OUT2
140
120
100
80
150mA
C
= 50µF / C = 10µF
NR
OUT2
I
OUT1
10mA
C
= 1µF / C = OPEN
OUT2
NR
V
OUT2
60
100µV/DIV
6
40
4
6658 G27
V
= V = 7V
IN2
IN
10µs/DIV
20
V
= 6VDC + 700mV
RMS
IN1
2
C
C
C
= 0.1µF
NR
I
= I
= 0A, T = 25°C
LOAD1 LOAD2 A
= 1µF
OUT1
OUT2
0
0
= 1µF
1
10
100
500
0.01
0.1
1
10
100
V
LOAD CURRENT (mA)
FREQUENCY (kHz)
OUT1
6658 G26
6658 G25
6658f
7
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