LINER LT6211CMS Single/dual programmable supply current, r-r output, current feedback amplifier Datasheet

LT6210/LT6211
Single/Dual Programmable
Supply Current, R-R Output,
Current Feedback Amplifiers
U
FEATURES
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DESCRIPTIO
Programmable Supply Current and Bandwidth:
10MHz at 300µA per Amplifier up to
200MHz at 6mA per Amplifier
Rail-to-Rail Output:
0.05V to 2.85V on 3V Single Supply
High Slew Rate: 700V/µs
High Output Drive:
±75mA Minimum Output Current
C-LoadTM Op Amp Drives All Capacitive Loads
Low Distortion:
–70dB HD2 at 1MHz 2VP-P
–75dB HD3 at 1MHz 2VP-P
Fast Settling:
20ns 0.1% Settling for 2V Step
Excellent Video Performance Into 150Ω Load:
Differential Gain of 0.20%, Differential Phase of 0.10°
Wide Supply Range:
3V to 12V Single Supply
±1.5V to ±6V Dual Supplies
Small Size:
Low Profile (1mm) 6-Lead SOT-23 (ThinSOTTM),
3mm x 3mm x 0.8mm DFN and 10-Lead MSOP
Packages
, LTC and LT are registered trademarks of Linear Technology Corporation.
C-Load and ThinSOT are trademarks of Linear Technology Corporation.
The LT®6210/LT6211 are single/dual current feedback
amplifiers with externally programmable supply current
and bandwidth ranging from 10MHz at 300µA per amplifier to 200MHz at 6mA per amplifier. They feature a low
distortion rail-to-rail output stage, 700V/µs slew rate and
a minimum output current drive of 75mA.
The LT6210/LT6211 operate on supplies as low as a single
3V and up to either 12V or ±6V. The ISET pin allows for the
optimization of quiescent current for specific bandwidth,
distortion or slew rate requirements. Regardless of supply
voltage, the supply current is programmable from just
300µA to 6mA per amplifier with an external resistor or
current source.
The LT6210 is available in the low profile (1mm) 6-lead
SOT-23 package. The LT6211 is available in the 10-lead
MSOP and the 3mm x 3mm x 0.8mm DFN packages.
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APPLICATIO S
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Buffers
Video Amplifers
Cable Drivers
Mobile Communication
Low Power/Battery Applications
U
TYPICAL APPLICATIO
Small Signal Response vs Supply Current
3
9
Line Driver Configuration for Various Supply Currents
5V
6
+
1
LT6210
4
75Ω
75Ω
CABLE
VOUT
5
–
2
75Ω
RSET
–5V
RF
RG
IS
6mA
3mA
300µA
RSET
20k
56k
1M
RG
887Ω
1.1k
11k
RF
887Ω
1.1k
11k
RLOAD
150Ω
150Ω
1k
6210 TA01
6
IS = 6mA
IS = 300µA
3
–3
–6
0
–3
0
VS = ±5V
AV = 2
TA = 25°C
VOUT = 100mVP-P
–6
0.1
1
10
100
FREQUENCY (MHz)
GAIN AT VOUT (dB)
VIN
3
GAIN AT LT6210 OUTPUT (dB)
IS = 3mA
–9
–12
1000
6210 TA01b
62101f
1
LT6210/LT6211
W W
W
AXI U
U
ABSOLUTE
RATI GS
(Note 1)
Total Supply Voltage (V+ to V–) ........................... 13.2V
Input Current ................................................. ±10mA
Output Current .............................................. ±80mA
Output Short-Circuit Duration (Note 2) ........... Indefinite
Operating Temperature Range (Note 3) ... –40°C to 85°C
Specified Temperature Range (Note 4) .... –40°C to 85°C
Junction Temperature (Note 5) ............................ 150°C
Junction Temperature (DD Package) ................... 125°C
Storage Temperature Range ................. –65°C to 150°C
Storage Temperature Range
(DD Package) ................................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec)................. 300°C
U
U
W
PACKAGE/ORDER I FOR ATIO
TOP VIEW
TOP VIEW
6 V+
OUT 1
V– 2
+IN 3
5 ISET
+
–
4 –IN
S6 PACKAGE
6-LEAD PLASTIC SOT-23
TJMAX = 150°C, θJA = 230°C/ W (NOTE 5)
OUT A
1
–IN A
2
+IN A
3
ISET A
4
–
5
V
10 V +
–
+
9 OUT B
–
+
8 –IN B
7 +IN B
6 ISET B
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
UNDERSIDE METAL CONNECTED TO V –
(PCB CONNECTION OPTIONAL)
TJMAX = 125°C, θJA = 43°C/ W (NOTE 5)
TOP VIEW
OUT A
–IN A
+IN A
ISET A
V–
1
2
3
4
5
–
+
–
+
10
9
8
7
6
V+
OUT B
–IN B
+IN B
ISET B
MS PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 120°C/ W (NOTE 5)
ORDER PART
NUMBER
S6 PART
MARKING*
ORDER PART
NUMBER
DD PART
MARKING*
ORDER PART
NUMBER
MS PART
MARKING
LT6210CS6
LT6210IS6
LTA3
LT6211CDD
LT6211IDD
LBCD
LT6211CMS
LT6211IMS
LTBBN
LTBBP
*The temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
62101f
2
LT6210/LT6211
ELECTRICAL CHARACTERISTICS
(IS = 6mA per Amplifier) The ● denotes specifications which apply
over the specified operating temperature range, otherwise specifications are at TA = 25°C. For V+ = 5V, V– = – 5V: RSET = 20k to ground,
AV = +2, RF = RG = 887Ω, RL = 150Ω; For V+ = 3V, V– = 0V: RSET = 0Ω to V–, AV = +2, RF = 887Ω, RG = 887Ω to 1.5V, RL = 150Ω to 1.5V
unless otherwise specified.
SYMBOL PARAMETER
VOS
V+ = 5V, V– = –5V, IS = 6mA
V+ = 3V, V– = 0V, IS = 6mA
MIN
TYP
MAX MIN
TYP
MAX
CONDITIONS
Input Offset Voltage
–1
±6
±9
–1
±6.5
±10
mV
mV
–3.5
±7
±9
–3
±6.5
±8
µA
µA
–13.5
±39
±55
2.5
±25
±40
µA
µA
●
IIN+
Noninverting Input Current
●
IIN –
Inverting Input Current
UNITS
●
en
Input Noise Voltage Density
f = 1kHz, RF = 887Ω,
RG = 46.4Ω, RS = 0Ω
6.5
6.5
nV/√Hz
+in
Input Noise Current Density
f = 1kHz
4.5
4.5
pA/√Hz
–in
Input Noise Current Density
f = 1kHz
RIN+
Noninverting Input Resistance
VIN = V + – 1.2V to V – + 1.2V
25
●
0.5
2
3.8
4.2
CIN+
Noninverting Input Capacitance f = 100kHz
VINH
Input Voltage Range, High
(Note 10)
●
VINL
Input Voltage Range, Low
(Note 10)
●
VOUTH
Output Voltage Swing, High
RL = 1k (Note 11)
RL = 150Ω (Note 11)
RL = 150Ω (Note 11)
VOUTL
CMRR
Output Voltage Swing, Low
RL = 1k (Note 11)
RL = 150Ω (Note 11)
RL = 150Ω (Note 11)
●
VIN = V + – 1.2V to V – + 1.2V
PSRR
Power Supply Rejection Ratio
VS = ±1.5V to ±6V (Note 6)
–IPSRR
Inverting Input Current
Power Supply Rejection
VS = ±1.5V to ±6V (Note 6)
IS
–4.2
4.4
4.2
MΩ
2
pF
1.8
2.2
V
●
46
43
0.15
60
●
2.65
2.6
±1.5
±2
60
1.2
2.85
2.75
0.05
0.1
–4.55
–4.4
85
V
V
V
V
0.3
0.35
V
V
V
46
dB
dB
0.2
µA/V
µA/V
85
dB
2
±7
±8
2
±7
±8
µA/V
µA/V
6
8.5
10
5.8
8.3
9
mA
mA
●
Supply Current per Amplifier
0.8
50
●
●
–3.8
4.8
4.6
–4.95
–4.8
Common Mode Rejection Ratio VIN = V + – 1.2V to V – + 1.2V
Inverting Input Current
Common Mode Rejection
pA/√Hz
1.7
2
●
–ICMRR
25
0.3
62101f
3
LT6210/LT6211
ELECTRICAL CHARACTERISTICS (IS = 6mA per Amplifier) The +● denotes– specifications which apply
over the specified operating temperature range, otherwise specifications are at TA = 25°C. For V = 5V, V = – 5V: RSET = 20k to
ground, AV = +2, RF = RG = 887Ω, RL = 150Ω; For V+ = 3V, V– = 0V: RSET = 0Ω to V–, AV = +2, RF = 887Ω, RG = 887Ω to 1.5V,
RL = 150Ω to 1.5V unless otherwise specified.
V+ = 5V, V– = –5V, IS = 6mA
MIN
SYMBOL PARAMETER
CONDITIONS
IOUT
Maximum Output Current
RL = 0Ω
(Notes 7, 11)
ROL
Transimpedance, ∆VOUT/∆IIN –
VOUT = V+ – 1.2V to V – + 1.2V
65
115
115
kΩ
SR
Slew Rate
(Note 8)
500
700
200
V/µs
tpd
Propagation Delay
50% VIN to 50% VOUT,
100mVP-P, Larger of tpd +, tpd –
1.5
2.4
ns
●
TYP
V+ = 3V, V– = 0V, IS = 6mA
MAX MIN
±75
TYP
MAX
±45
65
UNITS
mA
BW
–3dB Bandwidth
<1dB Peaking, AV = 1
200
120
MHz
ts
Settling Time
To 0.1% of VFINAL, VSTEP = 2V
20
25
ns
tf, tr
Small-Signal Rise and Fall Time 10% to 90%, VOUT = 100mVP-P
2
3.5
ns
dG
Differential Gain
(Note 9)
0.20
0.35
%
dP
Differential Phase
(Note 9)
0.10
0.20
Deg
HD2
2nd Harmonic Distortion
f = 1MHz, VOUT = 2VP-P
–70
–65
dBc
HD3
3rd Harmonic Distortion
f = 1MHz, VOUT = 2VP-P
–75
–75
dBc
(IS = 3mA per Amplifier) The ● denotes specifications which apply over the specified operating temperature range,
otherwise specifications are at TA = 25°C. For V + = 5V, V – = – 5V: RSET = 56k to ground, AV = +2, RF = RG = 1.1k, RL = 150Ω;
For V + = 3V, V – = 0V: RSET = 10k to V –, AV = +2, RF = 1.27k, RG = 1.27k to 1.5V, RL = 150Ω to 1.5V unless otherwise specified.
SYMBOL PARAMETER
VOS
V+ = 5V, V– = –5V, IS = 3mA
V+ = 3V, V– = 0V, IS = 3mA
MIN
TYP
MAX MIN
TYP
MAX
CONDITIONS
Input Offset Voltage
–1
±5.5
±8.5
–1.5
±5.5
±8.5
mV
mV
–1.5
±5
±7
–1.5
±5
±7
µA
µA
–12
±36
±52
–3
±15
±20
µA
µA
●
IIN+
Noninverting Input Current
●
IIN –
Inverting Input Current
●
en
Input Noise Voltage Density
f = 1kHz, RF = 1.1k,
RG = 57.6Ω, RS = 0Ω
+in
Input Noise Current Density
f = 1kHz
–in
Input Noise Current Density
f = 1kHz
RIN+
Noninverting Input Resistance
VIN = V+ – 1.2V to V – + 1.2V
CIN+
Noninverting Input Capacitance f = 100kHz
VINH
Input Voltage Range, High
(Note 10)
●
VINL
Input Voltage Range, Low
(Note 10)
●
VOUTH
Output Voltage Swing, High
RL = 1k (Note 11)
RL = 150Ω (Note 11)
RL = 150Ω (Note 11)
VOUTL
CMRR
Output Voltage Swing, Low
RL = 1k (Note 11)
RL = 150Ω (Note 11)
RL = 150Ω (Note 11)
Common Mode Rejection Ratio VIN
Inverting Input Current
Common Mode Rejection
7
nV/√Hz
1.5
1.5
pA/√Hz
0.5
3
1
2
●
3.8
4.1
–4.1
4.3
4.1
●
= V+ – 1.2V to V – + 1.2V
VIN = V+ – 1.2V to V – + 1.2V
46
43
–4.55
–4.4
±1.5
±2
15
pA/√Hz
2.5
MΩ
2
pF
2.1
0.9
2.6
2.55
50
0.3
●
1.8
–3.8
4.8
4.6
–4.95
–4.8
●
–ICMRR
7
15
●
UNITS
V
1.2
2.9
2.8
0.05
0.1
V
V
V
V
0.3
0.35
V
V
V
46
dB
dB
0.4
µA/V
µA/V
62101f
4
LT6210/LT6211
ELECTRICAL CHARACTERISTICS
(IS = 3mA per Amplifier) The ● denotes specifications which apply
over the specified operating temperature range, otherwise specifications are at TA = 25°C. For V + = 5V, V – = – 5V: RSET = 56k to ground,
AV = +2, RF = RG = 1.1k, RL = 150Ω; For V + = 3V, V – = 0V: RSET = 10k to V –, AV = +2, RF = 1.27k, RG = 1.27k to 1.5V, RL = 150Ω to 1.5V
unless otherwise specified.
V+ = 5V, V – = –5V, IS = 3mA
SYMBOL PARAMETER
CONDITIONS
PSRR
Power Supply Rejection Ratio
VS = ±1.5V to ±6V (Note 6)
–IPSRR
Inverting Input Current
Power Supply Rejection
VS = ±1.5V to ±6V (Note 6)
IS
MIN
●
60
TYP
85
60
TYP
MAX
UNITS
85
dB
±7
±8
1.5
±7
±8
µA/V
µA/V
3
4.1
4.55
3
4.1
4.4
mA
mA
●
±70
±45
IOUT
Maximum Output Current
RL = 0Ω
(Notes 7, 11)
ROL
Transimpedance, ∆VOUT/∆IIN –
VOUT = V+ –1.2V to V – +1.2V
65
120
SR
Slew Rate
(Note 8)
450
tpd
Propagation Delay
50% VIN to 50% VOUT,
100mVP-P, Larger of tpd +, tpd –
●
MAX MIN
1.5
●
Supply Current per Amplifier
V+ = 3V, V – = 0V, IS = 3mA
65
mA
120
kΩ
600
150
V/µs
3.1
4.7
ns
BW
–3dB Bandwidth
<1dB Peaking, AV = 1
100
70
MHz
ts
Settling Time
To 0.1% of VFINAL, VSTEP = 2V
20
25
ns
tf, tr
Small-Signal Rise and Fall Time 10% to 90%, VOUT = 100mVP-P
3
5.6
ns
dG
Differential Gain
(Note 9)
0.35
0.42
%
dP
Differential Phase
(Note 9)
0.30
0.44
Deg
HD2
2nd Harmonic Distortion
f = 1MHz, VOUT = 2VP-P
–65
–60
dBc
HD3
3rd Harmonic Distortion
f = 1MHz, VOUT = 2VP-P
–65
–65
dBc
(IS = 300µA per Amplifier) The ● denotes specifications which apply over the specified operating temperature range,
otherwise specifications are at TA = 25°C. For V + = 5V, V – = – 5V: RSET = 1M to ground, AV = +2, RF = RG = 11k, RL = 1k; For V + = 3V,
V – = 0V: RSET = 270k to V –, AV = +2, RF = 9.31k, RG = 9.31k to 1.5V, RL = 1k to 1.5V unless otherwise specified.
V+ = 5V, V – = –5V, IS = 300µA V+ = 3V, V – = 0V, IS = 300µA
SYMBOL PARAMETER
VOS
CONDITIONS
MIN
Input Offset Voltage
TYP
MAX MIN
TYP
MAX
UNITS
–1
±4.5
±8
–1.5
±4.5
±8
mV
mV
0.2
±1
±2
0.2
±1
±1.5
µA
µA
–3
±8.5
±11
–0.5
±3
±4.5
µA
µA
●
IIN+
Noninverting Input Current
●
IIN –
Inverting Input Current
●
en
Input Noise Voltage Density
f = 1kHz, RF = 13k, RG = 681Ω,
RS = 0Ω
13.5
13.5
nV/√Hz
+in
Input Noise Current Density
f = 1kHz
0.75
0.75
pA/√Hz
–in
Input Noise Current Density
f = 1kHz
5
5
pA/√Hz
RIN+
Noninverting Input Resistance
VIN = V + – 1.2V to V – + 1.2V
(Note 8)
1
15
MΩ
2
pF
1.8
2.1
V
2.75
2.7
2.85
●
1
25
(Note 10)
●
3.8
4.1
●
CIN+
Noninverting Input Capacitance f = 100kHz
VINH
Input Voltage Range, High
VINL
Input Voltage Range, Low
(Note 10)
VOUTH
Output Voltage Swing, High
RL = 1k (Note 11)
2
●
VOUTL
Output Voltage Swing, Low
RL = 1k (Note 11)
–4.1
4.75
4.7
–4.95
●
–3.8
4.85
–4.85
–4.8
0.9
0.05
1.2
V
V
V
0.15
0.2
V
V
62101f
5
LT6210/LT6211
ELECTRICAL CHARACTERISTICS
(IS = 300µA per Amplifier) The ● denotes specifications which
apply over the specified operating temperature range, otherwise specifications are at TA = 25°C. For V + = 5V, V – = – 5V: RSET = 1M to
ground, AV = +2, RF = RG = 11k, RL = 1k; For V + = 3V, V – = 0V: RSET = 270k to V–, AV = +2, RF = 9.31k, RG = 9.31k to 1.5V, RL = 1k to
1.5V unless otherwise specified.
V + = 5V, V– = –5V, IS = 300µA V + = 3V, V– = 0V, IS = 300µA
SYMBOL PARAMETER
CMRR
CONDITIONS
Common Mode Rejection Ratio VIN
= V + – 1.2V to V – + 1.2V
●
Inverting Input Current
Common Mode Rejection
VIN = V + – 1.2V to V – + 1.2V
PSRR
Power Supply Rejection Ratio
VS = ±1.5V to ±6V (Note 6)
–IPSRR
Inverting Input Current
Power Supply Rejection
VS = ±1.5V to ±6V (Note 6)
–ICMRR
IS
MIN
TYP
46
43
50
0.15
●
●
60
60
TYP
MAX
UNITS
46
dB
dB
0.2
µA/V
µA/V
85
dB
0.4
±2.2
±4
0.4
±2.2
±4
µA/V
µA/V
0.3
0.525
0.6
0.3
0.38
0.43
mA
mA
●
±30
±10
IOUT
Maximum Output Current
RL = 0Ω
(Notes 7, 11)
ROL
Transimpedance, ∆VOUT/∆IIN –
VOUT = V+ – 1.2V to V– + 1.2V
300
660
SR
Slew Rate
(Note 8)
120
tpd
Propagation Delay
BW
●
MIN
±1.5
±2
85
●
Supply Current per Amplifier
MAX
120
kΩ
170
20
V/µs
50% VIN to 50% VOUT,
100mVP-P, Larger of tpd +, tpd –
30
50
ns
–3dB Bandwidth
<1dB Peaking, AV = 1
10
7.5
MHz
ts
Settling Time
To 0.1% of VFINAL, VSTEP = 2V
200
300
ns
tf, tr
Small-Signal Rise and Fall Time 10% to 90%, VOUT = 100mVP-P
40
50
ns
HD2
2nd Harmonic Distortion
f = 1MHz, VOUT = 2VP-P
–40
–45
dBc
HD3
3rd Harmonic Distortion
f = 1MHz, VOUT = 2VP-P
–45
–45
dBc
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: As long as output current and junction temperature are kept below
the absolute maximum ratings, no damage to the part will occur.
Depending on the supply voltage, a heat sink may be required.
Note 3: The LT6210C/LT6211C is guaranteed functional over the operating
temperature range of –40°C to 85°C.
Note 4: The LT6210C/LT6211C is guaranteed to meet specified performance from 0°C to 70°C. The LT6210C/LT6211C is designed, characterized and expected to meet specified performance from –40°C and 85°C
but is not tested or QA sampled at these temperatures. The LT6210I/
LT6211I is guaranteed to meet specified performance from –40°C to 85°C.
Note 5: The LT6210 with no metal connected to the V – pin has a θJA of
230°C/W, however, thermal resistances vary depending upon the amount
of PC board metal attached to Pin 2 of the device. With the LT6210
mounted on a 2500mm2 3/32" FR-4 board covered with 2oz copper on
both sides and with just 20mm2 of copper attached to Pin 2, θJA drops to
160°C/W. Thermal performance can be improved even further by using a
4-layer board or by attaching more metal area to Pin 2.
Thermal resistance of the LT6211 in MSOP-10 is specified for a 2500mm2
3/32" FR-4 board covered with 2oz copper on both sides and with 100mm2
of copper attached to Pin 5. Its performance can also be increased with
additional copper much like the LT6210.
To achieve the specified θJA of 43°C/W for the LT6211 DFN-10, the
exposed pad must be soldered to the PCB. In this package, θJA will benefit
from increased copper area attached to the exposed pad.
65
mA
TJ is calculated from the ambient temperature TA and the power dissipation PD according to the following formula:
TJ = TA + (PD • θJA)
The maximum power dissipation can be calculated by:
PD(MAX) = (VS • IS(MAX)) + (VS/2)2/RLOAD
Note 6: For PSRR and –IPSRR testing, the current into the ISET pin is
constant, maintaining a consistent LT6210/LT6211 quiescent bias point. A
graph of PSRR vs Frequency is included in the Typical Performance
Characteristics showing +PSRR and –PSRR with RSET connecting ISET to
ground.
Note 7: While the LT6210 and LT6211 circuitry is capable of significant
output current even beyond the levels specified, sustained short-circuit
current exceeding the Absolute Maximum Rating of ±80mA may
permanently damage the device.
Note 8: This parameter is guaranteed to meet specified performance
through design and characterization. It is not production tested.
Note 9: Differential gain and phase are measured using a Tektronix
TSG120YC/NTSC signal generator and a Tektronix 1780R Video Measurement Set. The resolution of this equipment is 0.1% and 0.1°. Five identical
amplifier stages were cascaded giving an effective resolution of 0.02% and
0.02°.
Note 10: Input voltage range on ±5V dual supplies is guaranteed by
CMRR. On 3V single supply it is guaranteed by design and by correlation
to the ±5V input voltage range limits.
Note 11: This parameter is tested by forcing a 50mV differential voltage
between the inverting and noninverting inputs.
62101f
6
LT6210/LT6211
U W
TYPICAL AC PERFOR A CE
VS (V)
IS (mA) per
Amplifier
RSET (Ω)
AV
RL (Ω)
RF (Ω)
RG (Ω)
SMALL-SIGNAL
– 3dB BW, <1dB PEAKING (MHz)
SMALL-SIGNAL
±0.1dB BW (MHz)
±5
6
20k
1
150
±5
6
20k
2
150
1200
—
200
30
887
887
160
30
±5
6
20k
–1
150
698
698
140
20
±5
3
56k
±5
3
56k
1
150
1690
—
100
15
2
150
1100
1100
100
15
±5
3
56k
–1
150
1200
1200
80
15
±5
±5
0.3
1MEG
1
1k
13.7k
—
10
2
0.3
1MEG
2
1k
11k
11k
10
2
±5
0.3
1MEG
–1
1k
10k
10k
10
1.8
3, 0
6
0
1
150
1100
—
120
20
3, 0
6
0
2
150
887
887
100
20
3, 0
6
0
–1
150
806
806
100
20
3, 0
3
10k
1
150
1540
—
70
15
3, 0
3
10k
2
150
1270
1270
60
15
3, 0
3
10k
–1
150
1200
1200
60
15
3, 0
0.3
270k
1
1k
13k
—
7.5
2
3, 0
0.3
270k
2
1k
9.31k
9.31k
7
1.5
3, 0
0.3
270k
–1
1k
10k
10k
7
1.5
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current per Amplifier vs
Temperature
4.00
RL = ∞
5.5
SUPPLY CURRENT (mA)
SUPPLY CURRENT (mA)
6.0
VS = ±5V
RSET = 20k TO GND
VS = ±1.5V
RSET = 0Ω TO V –
380
360
3.50
3.25
RL = ∞
VS = ±1.5V
RSET = 10k TO V –
3.00
VS = ±5V
RSET = 56k TO GND
2.75
2.50
340
VS = ±5V
RSET = 1M TO GND
320
300
280
VS = ±1.5V
RSET = 270k TO V –
260
240
5.0
4.5
–50 –25
400
RL = ∞
3.75
7.0
6.5
Supply Current per Amplifier vs
Temperature
SUPPLY CURRENT (µA)
7.5
Supply Current per Amplifier vs
Temperature
2.25
50
25
75
0
TEMPERATURE (°C)
100
125
2.00
–50 –25
220
0
25
50
75
100
125
TEMPERATURE (°C)
6210 G01
6210 G02
200
–50 –25
50
25
0
75
TEMPERATURE (°C)
100
125
6210 G03
62101f
7
LT6210/LT6211
U W
TYPICAL PERFOR A CE CHARACTERISTICS (Supply Current Is Measured Per Amplifier)
Input Noise Spectral Density
(IS = 6mA per Amplifier)
+in
en
1
0.1
0.001
0.1
0.01
1
10
VS = ±5V
RL = 150Ω
TA = 25°C
–in
en
10
+in
1
0.1
0.001
100
0.01
0.1
FREQUENCY (kHz)
1
10
20
IS = 3mA
RF = 1690Ω
RL = 150Ω
–10 V = ±5V
S
IS = 6mA
AV = 1
RF = 1200Ω
–15 T = 25°C
A
RL = 150Ω
TYPICAL PART
–20
–5 –4 –3 –2 –1 0 1 2 3 4
INPUT COMMON MODE VOLTAGE (V)
4.0
IS = 6mA
RF = 1200Ω
RL = 150Ω
IS = 3mA
RF = 1690Ω
RL = 150Ω
–4.0
–4.5
VS = ±5V
AV = 1
CMRR > 48dB
TYPICAL PART
–5.0
–50 –25
5
IS = 300µA
RF = 13.7k
RL = 1k
50
25
75
0
TEMPERATURE (°C)
100
–4.8
VS = ±5V
VCM = 0V
∆VOS = 50mV
IS = 6mA
RL = 1k
IS = 6mA
RL = 150Ω
IS = 300µA
RL = 1k
0
25
50
1.2
1.1
–1.1
–1.2
–1.3
0.5
0
75
100
125
TEMPERATURE (°C)
IS = 3mA
RF = 1540Ω
RL = 150Ω
–0.5
VS = ±1.5V
IS = 300µA
–1.0 AV = 1
RF = 13k
CMRR >46dB
RL = 1k
TYPICAL PART
–1.5
50
100
–50 –25
25
75
0
TEMPERATURE (°C)
125
4.8
IS = 300µA
RL = 1k
IS = 6mA
RL = 100Ω
VS = ±1.5V
VCM = 0V
∆VOS = 50mV
IS = 6mA
RL = 100Ω
IS = 300µA
RL = 1k
–1.5
–50 –25
IS = 3mA
IS = 6mA
4.6
4.4
4.2
4.0
IS = 300µA
3.8
3.6
VS = ±5V
VCM = 0V
3.2 ∆VOS = 50mV
TA = 25°C
3.0
0
10 20
3.4
OUTPUT LOW
0
25
50
75
100
125
TEMPERATURE (°C)
6210 G10
IS = 6mA
RF = 1100Ω
RL = 150Ω
Output Voltage Swing vs ILOAD
OUTPUT HIGH
–1.4
OUTPUT LOW
–5.0
–50 –25
IS = 300µA
RF = 13k
RL = 1k
1.0
5.0
OUTPUT VOLTAGE (V)
–4.6
IS = 300µA
RL = 1k
100
62101 G09
1.4
OUTPUT HIGH
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
–4.4
125
1.5
IS = 6mA
RL = 150Ω
10
62101GO6
Output Voltage Swing vs
Temperature
1.3
4.4
1
62101 G08
5.0
IS = 6mA
RL = 1k
0.1
1.5
4.5
Output Voltage Swing vs
Temperature
4.6
0.01
Input Common Mode Range vs
Temperature
IS = 300µA
RF = 13.7k
RL = 1k
62101 G07
4.8
+in
1
FREQUENCY (kHz)
INPUT COMMON MODE LIMIT (V)
INPUT COMMON MODE LIMIT (V)
OFFSET VOLTAGE (mV)
IS = 300µA
RF = 13.7k
RL = 1k
5
–in
0.1
0.001
100
5.0
10
en
10
Input Common Mode Range vs
Temperature
15
VS = ±5V
RL = 1k
TA = 25°C
62101GO5
Input Offset Voltage vs Input
Common Mode Voltage
–5
100
FREQUENCY (kHz)
62101GO4
0
Input Noise Spectral Density
(IS = 300µA per Amplifier)
INPUT NOISE (nV/√Hz OR pA/√Hz)
–in
10
100
VS = ±5V
RL = 150Ω
TA = 25°C
INPUT NOISE (nV/√Hz OR pA/√Hz)
INPUT NOISE (nV/√Hz OR pA/√Hz)
100
Input Noise Spectral Density
(IS = 3mA per Amplifier)
6210 G11
40
50
60
30
LOAD CURRENT (mA)
70
6210 G12
62101f
8
LT6210/LT6211
U W
TYPICAL PERFOR A CE CHARACTERISTICS
(Supply Current Is Measured Per Amplifier)
Output Voltage Swing vs ILOAD
Output Voltage Swing vs ILOAD
Output Voltage Swing vs ILOAD
–3.0
–4.0
–4.2
–4.4
IS = 300µA
IS = 3mA
IS = 6mA
0
10
20
40
50
60
30
LOAD CURRENT (mA)
1.0
0.8
IS = 300µA
0.6
0.4
VS = ±1.5V
VCM = 0V
0.2 ∆V
OS = 50mV
TA = 25°C
0
0
10 20
40
50
60
30
LOAD CURRENT (mA)
70
CMRR
40
30
20
0.1
1
FREQUENCY (MHz)
10
CMRR
40
30
20
70
9
AV = 2
RF = RG = 887Ω
6
0
AV = 1
RF = 1.2k
VS = ±5V
–3 R = 150Ω
L
AV = –1
TA = 25°C
RF = RG = 698Ω
VOUT = 100mVP-P
–6
0.1
10
100
1
FREQUENCY (MHz)
1000
6210 G19
70
VS = ±5V
RL = 1k
TA = 25°C
–PSRR
60
+PSRR
50
CMRR
40
30
20
0.01
0.1
1
FREQUENCY (MHz)
10
0
0.001
100
0.01
0.1
1
FREQUENCY (MHz)
Frequency Response vs Closed
Loop Gain (IS = 300µA per
Amplifier)
Frequency Response vs Closed
Loop Gain (IS = 3mA per Amplifier)
9
AV = 2
RF = RG = 1100Ω
6
3
0
AV = –1
VS = ±5V
RF = RG = 1200Ω
–3 R = 150Ω
L
TA = 25°C
AV = 1
VOUT = 100mVP-P RF = 1690Ω
–6
0.1
10
100
1
FREQUENCY (MHz)
1000
6210 G20
10
6210 G18
6210 G17
Frequency Response vs Closed
Loop Gain (IS = 6mA per Amplifier)
3
40
50
60
30
LOAD CURRENT (mA)
10
0
0.001
100
GAIN (dB)
GAIN (dB)
6
20
CMRR and PSRR vs Frequency
(IS = 300µA per Amplifier)
50
6210 G16
9
10
6210 G15
10
0.01
IS = 3mA
IS = 6mA
0
VS = ±5V
RL = 150Ω
TA = 25°C
–PSRR
+PSRR
10
0
0.001
IS = 300µA
–1.1
–1.5
70
REJECTION RATIO (dB)
+PSRR
60
REJECTION RATIO (dB)
REJECTION RATIO (dB)
50
70
VS = ±5V
RL = 150Ω
TA = 25°C
60
–0.9
CMRR and PSRR vs Frequency
(IS = 3mA per Amplifier)
CMRR and PSRR vs Frequency
(IS = 6mA per Amplifier)
–PSRR
–0.7
6210 G14
6210 G13
70
–0.5
–1.3
GAIN (dB)
–5.0
IS = 3mA
IS = 6mA
OUTPUT VOLTAGE (V)
–3.8
–4.8
–0.1
1.2
–3.6
–4.6
VS = ±1.5V
VCM = 0V
∆VOS = 50mV
–0.3 T = 25°C
A
1.4
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
VS = ±5V
–3.2 VCM = 0V
∆VOS = 50mV
–3.4 T = 25°C
A
AV = 2
RF = RG = 11k
3
0
AV = –1
V = ±5V
RF = RG = 10k
–3 RS = 150Ω
L
TA = 25°C
VOUT = 100mVP-P
–6
0.1
10
1
FREQUENCY (MHz)
AV = 1
RF = 13.7k
100
6210 G21
62101f
9
LT6210/LT6211
U W
TYPICAL PERFOR A CE CHARACTERISTICS (Supply Current Is Measured Per Amplifier)
2nd and 3rd Harmonic Distortion vs
Frequency (IS = 6mA per Amplifier)
0
–50
HD2
–60
–70
HD3
–80
–30
–20
HD2
– 40
–50
–60
–70
HD3
–80
–90
–10
100
0.1
1
10
FREQUENCY (MHz)
6210 G22
7
IS = 6mA
RF = RG = 887Ω
RL = 150Ω
6
5
4
3
IS = 300µA
RF = RG = 11k
RL = 1k
2
1
0
0.1
1
10
FREQUENCY (MHz)
1000
OUTPUT IMPEDANCE (Ω)
OUTPUT VOLTAGE SWING (VP-P)
8
10
IS = 6mA
RF = RG = 887Ω
RL = 150Ω
1
1
10
FREQUENCY (MHz)
100
50
IS = 6mA
RF = RG = 887Ω
RL = 150Ω
10
0
10
VS = ±5V
AV = 2
VOUT = 100mVP-P
TA = 25°C
100
1000
CAPACITIVE LOAD (pF)
10000
6210 G28
OUTPUT SERIES RESISTANCE (Ω)
30
RL = ∞
80
RL = 150Ω
60
40
VS = ±5V
20 IS = 6mA
RF = RG = 887Ω
TA = 25°C
0
0.1
10
1
FREQUENCY (MHz)
100
40
35
30
500
6210 G27
Maximum Capacitive Load vs
Feedback Resistor
VS = ±5V
OVERSHOOT < 10%
VOUT = 100mVP-P
IS = 6mA
RF = RG = 887Ω
RL = ∞
TA = 25°C
45
20
500
100
6210 G26
70
40
6210 G24
Maximum Capacitive Load vs
Output Series Resistor
IS = 300µA
RF = RG = 11k
RL = 1k
10
120
IS = 300µA
RF = RG = 11k
RL = 1k
0.1
0.1
100
IS = 3mA
RF = RG = 1100Ω
RL = 150Ω
0.1
1
FREQUENCY (MHz)
LT6211 Channel Separation
vs Frequency
100
Overshoot vs Capacitive Load
50
100
VS = ±5V
AV = 2
TA = 25°C
6210 G25
60
–70
Output Impedance vs Frequency
VS = ±5V
HD2, HD3 <–40dB
AV = 2
TA = 25°C
9
HD3
–60
6210 G23
Maximum Undistorted Output
Sinusoid vs Frequency
10
–50
–100
0.01
CHANNEL SEPARATION (dB)
1
10
FREQUENCY (MHz)
HD2
– 40
–90
–100
0.01
25
20
15
10000
CAPACITIVE LOAD (pF)
0.1
–30
VS = ±5V
RF = RG = 11k
VOUT = 2VP-P
RL = 1k
TA = 25°C
–80
–90
–100
0.01
OVERSHOOT (%)
DISTORTION (dBc)
–20
– 40
0
VS = ±5V
RF = RG = 1.1k
VOUT = 2VP-P
RL = 150Ω
TA = 25°C
–10
DISTORTION (dBc)
DISTORTION (dBc)
0
VS = ±5V
–10 RF = RG = 887Ω
VOUT = 2VP-P
–20 R = 150Ω
L
–30 TA = 25°C
2nd and 3rd Harmonic Distortion vs
Frequency (IS = 300µA per Amplifier)
2nd and 3rd Harmonic Distortion vs
Frequency (IS = 3mA per Amplifier)
1000
VS = ±5V
AC PEAKING < 3dB
VOUT = 100mVP-P
IS = 6mA
R G = RF
RL = 150Ω
TA = 25°C
100
10
5
0
10
100
CAPACITIVE LOAD (pF)
1000
6210 G29
10
800
1000 1200 1400 1600 1800
FEEDBACK RESISTANCE (Ω)
2000
6210 G30
62101f
10
LT6210/LT6211
U W
TYPICAL PERFOR A CE CHARACTERISTICS (Supply Current Is Measured Per Amplifier)
–3dB Small-Signal Bandwidth
vs Supply Current
900
VS = ±5V
100
VS = ±1.5V
10
SLEW RATE (V/µs)
800
–30
VS = ±5V
AV = 2
VOUT = 7VP-P
TA = 25°C
HARMONIC DISTORTION (dBc)
1000
AV = 2
VOUT = 100mVP-P
TA = 25°C
700
RISING
EDGE RATE
600
500
FALLING
EDGE RATE
400
300
200
VS = ±5V
AV = 2
VOUT = 2VP-P
TA = 25°C
–40
–50
HD2
–60
HD3
–70
100
1
0.1
1
10
SUPPLY CURRENT PER AMPLIFIER (mA)
0
0.1
1
10
SUPPLY CURRENT PER AMPLIFIER (mA)
62101 G34
VS = ±5V
TIME (100ns/DIV)
VIN = ±25mV
RF = RG = 11k
RSET = 1M TO GND
RL = 1k
62101 G35
62101 G36
Large-Signal Transient Response
(IS = 300µA per Amplifier)
OUTPUT (2mV/DIV)
Large-Signal Transient Response
(IS = 3mA per Amplifier)
OUTPUT (2V/DIV)
62101 G37
Small-Signal Transient Response
(IS = 300µA per Amplifier)
OUTPUT (50mV/DIV)
VS = ±5V
TIME (10ns/DIV)
VIN = ±25mV
RF = RG = 1.1k
RSET = 56k TO GND
RL = 150Ω
Large-Signal Transient Response
(IS = 6mA per Amplifier)
VS = ±5V
TIME (10ns/DIV)
VIN = ±1.75V
RF = RG = 887Ω
RSET = 20k TO GND
RL = 150Ω
10
1
SUPPLY CURRENT PER AMPLIFIER (mA)
62101 G31
Small-Signal Transient Response
(IS = 3mA per Amplifier)
OUTPUT (50mV/DIV)
OUTPUT (50mV/DIV)
Small-Signal Transient Response
(IS = 6mA per Amplifier)
VS = ±5V
TIME (10ns/DIV)
VIN = ±25mV
RF = RG = 887Ω
RSET = 20k TO GND
RL = 150Ω
–80
0.1
62101 G32
62101 G33
OUTPUT (2V/DIV)
–3dB BANDWIDTH (MHz)
1000
1MHz 2nd and 3rd Harmonic
Distortion vs Supply Current
Slew Rate vs Supply Current
VS = ±5V
TIME (10ns/DIV)
VIN = ±1.75V
RF = RG = 1.1k
RSET = 56k TO GND
RL = 150Ω
62101 G38
VS = ±5V
TIME (100ns/DIV)
VIN = ±1.75V
RF = RG = 11k
RSET = 1M TO GND
RL = 1k
62101 G39
62101f
11
LT6210/LT6211
U
W
U U
APPLICATIO S I FOR ATIO
Setting the Quiescent Operating Current (ISET Pin)
Input Considerations
The quiescent bias point of the LT6210/LT6211 is set with
either an external resistor from the ISET pin to a lower
potential or by drawing a current out of the ISET pin.
However, the ISET pin is not designed to function as a
shutdown. The LT6211 uses two entirely independent bias
networks, so while each channel can be programmed for
a different supply current, neither ISET pin should be left
unconnected. A simplified schematic of the internal biasing structure can be seen in Figure␣ 1. Figure 2 illustrates
the results of varying RSET on 3V and ±5V supplies. Note
that shorting the ISET pin under 3V operation results in a
quiescent bias of approximately 6mA. Attempting to bias
the LT6210/LT6211 at a current level higher than 6mA by
using a smaller resistor may result in instability and
decreased performance. However, internal circuitry clamps
the supply current of the part at a safe level of approximately 15mA in case of accidental connection of the ISET
pin directly to a negative potential.
The inputs of the LT6210/LT6211 are protected by backto-back diodes. If the differential input voltage exceeds
1.4V, the input current should be limited to less than the
absolute maximum ratings of ±10mA. In normal operation, the differential voltage between the inputs is small, so
the ±1.4V limit is generally not an issue. ESD diodes
protect both inputs, so although the part is not guaranteed
to function outside the common mode range, input voltages that exceed a diode beyond either supply will also
require current limiting to keep the input current below the
absolute maximum of ±10mA.
V+
Feedback Resistor Selection
The small-signal bandwidth of the LT6210/LT6211 is set
by the external feedback resistors and the internal junction
capacitances. As a result, the bandwidth is a function of the
quiescent supply current, the supply voltage, the value of
the feedback resistor, the closed-loop gain and the load
resistor. Refer to the Typical AC Performance table for
more information.
6
8k
Layout and Passive Components
600Ω
600Ω
TO
BIAS
CONTROL
5
ISET
6210 F01
SUPPLY CURRENT PER AMPLIFIER (mA)
Figure 1. Internal Bias Setting Circuitry
VS = ±5V
RSET TO GND
10
VS = 3V
RSET TO GND
1
TA = 25°C
RL = ∞
0.1
0.01
0.1
1
10
100
1000
RSET PROGRAMMING RESISTOR (kΩ)
6210 F02
Figure 2. Setting RSET to Control IS
As with all high speed amplifiers, the LT6210/LT6211
require some attention to board layout. Low ESL/ESR
bypass capacitors should be placed directly at the positive
and negative supply (0.1µF ceramics are recommended).
For best transient performance, additional 4.7µF tantalums
should be added. A ground plane is recommended and
trace lengths should be minimized, especially on the
inverting input lead.
Capacitance on the Inverting Input
Current feedback amplifiers require resistive feedback
from the output to the inverting input for stable operation.
Capacitance on the inverting input will cause peaking in the
frequency response and overshoot in the transient response. Take care to minimize the stray capacitance at the
inverting input to ground and between the output and the
inverting input. If significant capacitance is unavoidable in
a given application, an inverting gain configuration should
be considered. When configured inverting, the amplifier
inputs do not slew and the effect of parasitics is greatly
reduced.
62101f
12
LT6210/LT6211
U
W
U U
APPLICATIO S I FOR ATIO
Capacitive Loads
The LT6210/LT6211 are stable with any capacitive load.
Although peaking and overshoot may result in the AC
transient response, the amplifier’s compensation decreases
bandwidth with increasing output capacitive load to ensure stability. To maintain a response with minimal peaking, the feedback resistor can be increased at the cost of
bandwidth as shown in the Typical Performance Characteristics. Alternatively, a small resistor (5Ω to 35Ω) can be
put in series with the output to isolate the capacitive load
from the amplifier output. This has the advantage that the
amplifier bandwidth is only reduced when the capacitive
load is present. The disadvantage of this technique is that
the gain is a function of the load resistance.
Power Supplies
The LT6210/LT6211 will operate on single supplies from
3V to 12V and on split supplies from ±1.5V to ±6V. If split
supplies of unequal absolute value are used, input offset
voltage and inverting input current will shift from the
values specified in the Electrical Characteristics table.
Input offset voltage will shift 2mV and inverting input
current will shift 0.5µA for each volt of supply mismatch.
Slew Rate
Unlike a traditional voltage feedback op amp, the slew rate
of a current feedback amplifier is not independent of the
amplifier gain configuration. In a current feedback amplifier, both the input stage and the output stage have slew
rate limitations. In the inverting mode, and for gains of 2
or more in the noninverting mode, the signal amplitude
between the input pins is small and the overall slew rate is
that of the output stage. For gains less than 2 in the
noninverting mode, the overall slew rate is limited by the
input stage. The input slew rate of the LT6210/LT6211 on
±5V supplies with an RSET resistor of 20k (IS = 6mA) is
approximately 600V/µs and is set by internal currents and
capacitances. The output slew rate is additionally constrained by the value of the feedback resistor and internal
capacitance. At a gain of 2 with 887Ω feedback and gain
resistors, ±5V supplies and the same biasing as above, the
output slew rate is typically 700V/µs. Larger feedback
resistors, lower supply voltages and lower supply current
levels will all reduce slew rate. Input slew rates significantly exceeding the output slew capability can actually
decrease slew performance in a positive gain configuration; the cleanest transient response will be obtained from
input signals with slew rates slower than 1000V/µs.
Output Swing and Drive
The output stage of the LT6210/LT6211 consists of a pair
of class-AB biased common emitters that enable the
output to swing rail-to-rail. Since the amplifiers can potentially deliver output currents well beyond the specified
minimum short-circuit current, care should be taken not
to short the output of the device indefinitely. Attention
must be paid to keep the junction temperature of the IC
below the absolute maximum rating of 150°C if the output
is used to drive low impedance loads. See Note 5 for
details. Additionally, the output of the amplifier has reverse-biased ESD diodes connected to each supply. If the
output is forced beyond either supply, large currents will
flow through these diodes. If the current is limited to 80mA
or less, no damage to the part will occur.
U
TYPICAL APPLICATIO
3V Cable Driver with Active Termination
Driving back-terminated cables on single supplies usually
results in very limited signal amplitude at the receiving end
of the cable. However, positive feedback can be used to
reduce the size of the series back termination resistor,
thereby decreasing the attenuation between the series and
shunt termination resistors while still maintaining controlled output impedance from the line-driving amplifier.
Figure 3 shows the LT6210 using this “active termination”
scheme on a single 3V supply. The amplifier is AC-coupled
and in an inverting gain configuration to maximize the
input signal range. The gain from VIN to the receiving end
of the cable, VOUT, is set to –1. The effective impedance
looking into the amplifier circuit from the cable is 50Ω
throughout the usable bandwidth.
62101f
13
LT6210/LT6211
U
TYPICAL APPLICATIO
resistor and has a full signal 1VP-P bandwidth of 50MHz.
Small signal –3dB bandwidth extends from 1kHz to
56MHz with the selected coupling capacitors.
The response of the cable driver with a 1MHz sinusoid is
shown in Figure 4. The circuit is capable of transmitting
a 1.5VP-P undistorted sinusoid to the 50Ω termination
3V
2k
1%
2k
1%
1.3k
1%
VIN
1V/DIV
3V
4
2.2µF 249Ω
1%
VIN
6
+
1
LT6210
3
2
–
5
RSER
15Ω
1%
2.2µF
VA
1V/DIV
VOUT
RTERM
50Ω
VA
154Ω
1%
VOUT
1V/DIV
6210 F03
3300pF
NPO
200ns/DIV
Figure 3. 3V Cable Driver with Active Termination
6210 F04
Figure 4. Response of Circuit at 1MHz
W
W
SI PLIFIED SCHE ATIC
V+
6
V+
+IN
–IN
3
4
600Ω
600Ω
OUT
1
OUTPUT BIAS
CONTROL
V–
8k
V–
2
SUPPLY
CURRENT
CONTROL
5
ISET
6210 SS
U
PACKAGE DESCRIPTIO
DD Package
10-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1699)
R = 0.115
TYP
6
0.38 ± 0.10
10
0.675 ±0.05
3.50 ±0.05
1.65 ±0.05
2.15 ±0.05 (2 SIDES)
3.00 ±0.10
(4 SIDES)
PACKAGE
OUTLINE
1.65 ± 0.10
(2 SIDES)
PIN 1
TOP MARK
(SEE NOTE 5)
(DD10) DFN 0403
5
0.25 ± 0.05
0.200 REF
0.50
BSC
2.38 ±0.05
(2 SIDES)
1
0.75 ±0.05
0.00 – 0.05
0.25 ± 0.05
0.50 BSC
2.38 ±0.10
(2 SIDES)
BOTTOM VIEW—EXPOSED PAD
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
NOTE:
4. EXPOSED PAD SHALL BE SOLDER PLATED
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2).
CHECK THE LTC WEBSITE DATA SHEET FOR CURRENT STATUS OF VARIATION ASSIGNMENT 5. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE
TOP AND BOTTOM OF PACKAGE
2. ALL DIMENSIONS ARE IN MILLIMETERS
3. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
62101f
14
LT6210/LT6211
U
PACKAGE DESCRIPTIO
MS Package
10-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1661)
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
0.497 ± 0.076
(.0196 ± .003)
REF
10 9 8 7 6
0.889 ± 0.127
(.035 ± .005)
0.254
(.010)
3.00 ± 0.102
(.118 ± .004)
(NOTE 4)
4.90 ± 0.152
(.193 ± .006)
DETAIL “A”
0° – 6° TYP
GAUGE PLANE
5.23
(.206)
MIN
1 2 3 4 5
3.20 – 3.45
(.126 – .136)
0.53 ± 0.152
(.021 ± .006)
0.86
(.034)
REF
1.10
(.043)
MAX
DETAIL “A”
0.18
(.007)
0.50
0.305 ± 0.038
(.0197)
(.0120 ± .0015)
BSC
TYP
RECOMMENDED SOLDER PAD LAYOUT
SEATING
PLANE
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
0.17 – 0.27
(.007 – .011)
TYP
0.127 ± 0.076
(.005 ± .003)
0.50
(.0197)
BSC
MSOP (MS) 0603
S6 Package
6-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1636)
0.62
MAX
2.90 BSC
(NOTE 4)
0.95
REF
1.22 REF
3.85 MAX 2.62 REF
1.4 MIN
2.80 BSC
1.50 – 1.75
(NOTE 4)
PIN ONE ID
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45
6 PLCS (NOTE 3)
0.95 BSC
0.80 – 0.90
0.20 BSC
0.01 – 0.10
1.00 MAX
DATUM ‘A’
0.30 – 0.50 REF
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
0.09 – 0.20
(NOTE 3)
1.90 BSC
S6 TSOT-23 0302
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
62101f
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
15
LT6210/LT6211
U
TYPICAL APPLICATIO S
Line Driver with Power Saving Mode
In applications where low distortion or high slew rate are
desirable but not necessary at all times, it may be possible
to decrease the LT6210 or LT6211’s quiescent current
when the higher power performance is not required.
Figure 5 illustrates a method of setting quiescent current
with a FET switch. In the 5V dual supply case pictured,
shorting the ISET pin through an effective 20k to ground
sets the supply current to 6mA, while the 240k resistor at
the ISET pin with the FET turned off sets the supply current
to approximately 1mA. The feedback resistor of 4.02k is
selected to minimize peaking in low power mode. The
bandwidth of the LT6210 in this circuit increases from
about 40MHz in low power mode to over 200MHz in full
speed mode, as illustrated in Figure 6. Other AC specs also
improve significantly at the higher current setting. The
following table shows harmonic distortion at 1MHz with a
2VP-P sinusoid at the two selected current levels.
Harmonic Distortion
LOW POWER
FULL SPEED
HD2
–53dBc
HD2
–68dBc
HD3
–46dBc
HD3
–77dBc
3
R3
4.02k
2
5V
FULL
SPEED
MODE
IS = 6mA
4
–
6
LT6210
VIN
3
+
R2
22k
VOUT
RLOAD
150Ω
2
5
HS/LP
1
–5V
AMPLITUDE (dB)
1
0
–1
LOW POWER
MODE
IS = 1mA
–2
–3
–4
R1
240k
TA = 25°C
VOUT = 100mVP-P
–5
2N7002
–6
0
6210 F05
1
10
100
FREQUENCY (MHz)
1000
6210 F06
Figure 5. Line Driver with Low Power Mode
Figure 6. Frequency Response for Full
Speed and Low Power Mode
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62101f
16
Linear Technology Corporation
LT/TP 0204 1K • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2003