TS615
Dual Wide-Band Operational Amplifier
with High Output Current
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■
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■
■
■
■
■
■
■
Low noise: 2.5 nV/√Hz
High output current: 420 mA
Very low harmonic and intermodulation
distortion
High slew rate: 410 V/µs
-3 dB bandwidth: 40 MHz @ gain = 12 dB
on 25
Ω
single-ended load
21.2 Vp-p differential output swing on 50
Ω
load, 12 V power supply
Current feedback structure
5 V to 12 V power supply
Specified for 20
Ω
and 50
Ω
differential load
Power down function with short-circuited
output to keep matching with the line in
sleep mode
P
TSSOP14 Exposed-Pad
(Plastic Micropackage)
Pin Connections (top view)
Description
The TS615 is a dual operational amplifier
featuring a high output current of 410 mA. This
driver can be configured differentially for driving
signals in telecommunication systems using
multiple carriers. The TS615 is ideally suited for
xDSL (High Speed Asymmetrical Digital
Subscriber Line) applications. This circuit is
capable of driving a 10
Ω
or 25
Ω
load on a range
of power supplies:
±2.5
V, 5 V,
±6
V or +12 V. The
TS615 is capable of reaching a -3 dB bandwidth
of 40 MHz on a 25
Ω
load with a 12 dB gain. This
device is designed for high slew rates and
demonstrates low harmonic distortion and
intermodulation. The TS615 offers a power-down
function to order to decrease power consumption.
During sleep mode, the device short circuits its
output in order to keep the impedance matched to
the line. The TS615 is housed in TSSOP14
exposed-pad plastic package for a very low
thermal resistance.
b
O
so
r
P
te
le
du
o
t(s
c
-
)
so
b
O
te
le
-VCC1 1
Output1 2
+VCC1
3
NC 7
ro
P
+ -
uc
d
s)
t(
14 -VCC2
13 Output2
- +
12 +VCC2
11 Non Inverting Input2
10 Inverting Input2
9 NC
8 NC
Non Inverting Input1 4
Inverting Input1 5
PowerDown 6
Top View
dice
Pad
Cross Section View Showing Exposed-Pad.
This pad must be connected to a (-Vcc) copper area on the PCB.
Applications
■
■
Line driver for xDSL
Multiple video line driver
Order Codes
Part Number
TS615IPWT
Temperature Range
-40, +85°C
Package
TSSOP (Thin Shrink
Outline Package)
Packaging
Tape & Reel
Marking
TS615
December 2004
Revision 2
1/36
TS615
Typical Application
1 Typical Application
Figure 1
shows a schematic of a typical xDSL application using the TS615.
Figure 1. Differential line driver for xDSL applications
+Vcc
1/2
TS615
13
10
_
-Vcc
14
+
11
12
12.5Ω
Vi
R2
R1
GND
R4
Vo
25Ω
Vo
2
12.5Ω
1:2
100Ω
Vi
5
4
_
R3
3
+Vcc
-Vcc
1/2
TS615
+
6
Pw-Dwn
1
so
b
O
r
P
te
le
du
o
t(s
c
-
)
so
b
O
te
le
ro
P
uc
d
s)
t(
2/36
Absolute Maximum Ratings
TS615
2 Absolute Maximum Ratings
Table 1. Key parameters and their absolute maximum ratings
Symbol
VCC
Vid
V
in
T
oper
T
std
T
j
R
thjc
R
thja
P
max.
ESD
Supply voltage
1
Differential Input Voltage
2
Input Voltage Range
3
Operating Free Air Temperature Range
Storage Temperature
Maximum Junction Temperature
Thermal Resistance Junction to Case
Thermal Resistance Junction to Ambient Area
Maximum Power Dissipation (@25°C)
CDM: Charged Device Model
Parameter
Value
±7
±2
±6
-40 to + 85
-65 to +150
150
4
40
3.1
1.5
2
200
1
Unit
V
V
V
°C
°C
°C
°C/W
°C/W
W
except HBM: Human Body Model
pins 4, 5, MM: Machine Model
10, 11
ESD
CDM: Charged Device Model
only pins HBM: Human Body Model
4, 5, 10, MM: Machine Model
11
Output Short Circuit
1) All voltage values, except differential voltage are with respect to network terminal.
2) Differential voltage are non-inverting input terminal with respect to the inverting input terminal.
3) The magnitude of input and output voltage must never exceed V
CC
+0.3V.
4) An output current limitation protects the circuit from transient currents. Short-circuits can cause excessive heating.
Destructive dissipation can result from short circuit on amplifiers.
Table 2. Operating conditions
Symbol
VCC
Vicm
so
b
O
ro
P
te
le
Power Supply Voltage
Common Mode Input Voltage
du
Parameter
t(s
c
-
)
so
b
O
te
le
ro
P
1
4
100
du
ct
s)
(
kV
kV
V
kV
kV
V
Value
±2.5 to ±6
-VCC+1.5V to +VCC-1.5V
Unit
V
V
3/36
TS615
Electrical Characteristics
3 Electrical Characteristics
Table 3.
V
CC
= ±6V, R
fb
=910
Ω
,T
amb
= 25°C
(unless otherwise specified)
Symbol
DC performance
V
io
Input Offset Voltage
Differential Input Offset Voltage
Positive Input Bias Current
Negative Input Bias Current
Input(+) Impedance
Input(-) Impedance
Input(+) Capacitance
Common Mode Rejection Ratio
20 log (
∆
V
ic
/
∆
V
io
)
Supply Voltage Rejection Ratio
20 log (
∆
V
cc
/
∆
V
io
)
Total Supply Current per Operator
T
amb
T
min.
< T
amb
< T
max.
T
amb
= 25°C
T
amb
T
min.
< T
amb
< T
max.
T
amb
T
min.
< T
amb
< T
max.
6
7.8
3
3.2
82
54
1
15
1.25
2.1
2.5
30
3.5
mV
mV
Parameter
Test Condition
Min.
Typ.
Max.
Unit
∆
V
io
I
ib+
I
ib-
Z
IN+
Z
IN-
C
IN+
CMR
SVR
I
CC
µ
A
µ
A
k
Ω
∆
V
ic
= ±4.5V
T
min.
< T
amb
< T
max.
58
72
63
∆
V
cc
=±2.5V to ±6V
T
min.
< T
amb
< T
max.
No load
Dynamic performance and output characteristics
R
OL
Open Loop Transimpedance
-3dB Bandwidth
Full Power Bandwidth
Gain Flatness @ 0.1dB
Rise Time
Fall Time
V
out
= 7Vp-p, R
L
= 25
Ω
T
min.
< T
amb.
< T
max.
BW
Tr
Tf
Ts
so
b
O
SR
V
OH
V
OL
I
out
Settling Time
Slew Rate
r
P
te
le
du
o
t(s
c
-
)
Small Signal V
out
<20mVp
A
V
= 12dB, R
L
= 25
Ω
so
b
O
te
le
r
P
5
d
o
79
78
14
21
8.9
40
61
uc
17
s)
t(
Ω
pF
dB
dB
mA
M
Ω
25
Large Signal V
out
=3Vp
A
V
= 12dB, R
L
= 25
Ω
Small Signal V
out
<20mVp
A
V
= 12dB, R
L
= 25
Ω
V
out
= 6Vp-p, A
V
= 12dB, R
L
= 25
Ω
V
out
= 6Vp-p, A
V
= 12dB, R
L
= 25
Ω
V
out
= 6Vp-p, A
V
= 12dB, R
L
= 25
Ω
V
out
= 6Vp-p, A
V
= 12dB, R
L
= 25
Ω
R
L
=25
Ω
Connected to GND
R
L
=25
Ω
Connected to GND
V
out
= -4Vp
T
min.
< T
amb
< T
max.
V
out
= +4Vp
T
min.
< T
amb
< T
max.
-350
330
330
4.8
MHz
26
7
10.6
12.2
50
410
5.1
-5.5
-530
-440
420
365
mA
-5.2
MHz
ns
ns
ns
V/
µ
s
V
V
High Level Output Voltage
Low Level Output Voltage
Output Sink Current
Output Source Current
4/36
Electrical Characteristics
Table 3.
V
CC
= ±6V, R
fb
=910
Ω
,T
amb
= 25°C
(unless otherwise specified)
Symbol
Noise and distortion
eN
iNp
iNn
HD2
HD3
Equivalent Input Noise Voltage
Equivalent Input Noise Current (+)
Equivalent Input Noise Current (-)
2nd Harmonic distortion
(differential configuration)
3rd Harmonic distortion
(differential configuration)
2nd Order Intermodulation Product
(differential configuration)
IM2
F = 100kHz
F = 100kHz
F = 100kHz
V
out
= 14Vp-p, A
V
= 12dB
F= 110kHz, R
L
= 50
Ω
diff.
V
out
= 14Vp-p, A
V
= 12dB
F= 110kHz, R
L
= 50
Ω
diff.
F1= 100kHz, F2 = 110kHz
V
out
= 16Vp-p, A
V
= 12dB
R
L
= 50
Ω
diff.
F1= 370kHz, F2 = 400kHz
V
out
= 16Vp-p, A
V
= 12dB
R
L
= 50
Ω
diff.
3rd Order Intermodulation Product
(differential configuration)
IM3
F1 = 100kHz, F2 = 110kHz
V
out
= 16Vp-p, A
V
= 12dB
R
L
= 50
Ω
diff.
F1 = 370kHz, F2 = 400kHz
V
out
= 16Vp-p, A
V
= 12dB
R
L
= 50
Ω
diff.
2.5
15
21
-87
-83
Parameter
Test Condition
Min.
Typ.
Max.
TS615
Unit
nV/
√
Hz
pA/
√
Hz
pA/
√
Hz
dBc
dBc
-76
dBc
-75
-88
so
b
O
r
P
te
le
du
o
t(s
c
-
)
so
b
O
te
le
ro
P
-87
uc
d
s)
t(
dBc
5/36
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