MP5121, MP5221, MP5421
High Speed, Rail-to-Rail Input-Output, and
Single-Supply Op Amps
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP5121(single), MP5221(dual), and
MP5421(quad) are high-speed, high-voltage
rail-to-rail input-output amplifiers for use as
voltage reference buffers in Thin Film Transistor
Liquid Crystal Displays (TFT-LCDs). The
MP5121 family provides excellent overall
performance and versatility. The 20MHz –3dB
bandwidth and 45V/s slew rate make these
amplifier suitable for many portable applications.
The MP5121, MP5221, and MP5421 are
designed to operate at supply voltages as low
as 3.2V and up to 20V at 1.6mA of supply
current per amplifier. The MP5121 family has
true single supply capability. The input can
swing 0.5V below the negative rail and 0.5V
above the positive rail. The output can swing
within 100mV of each rail.
20MHz –3dB Bandwidth
45V/s Slew Rate
Single-Supply Operation: 3.2V to 20V
Supply Current (per amplifier)1.6mA
Unity-Gain Stable
Output Swing within 100mV of Supply Rail
Rail-to-Rail Input Capability
High Output Drive Capability (50mA)
MP5121 Available in TSOT-5
MP5221 Available in MSOP-8
MP5421 Available in TSSOP-14
APPLICATIONS
The MP5421 quad channel is available in the
space-saving 14-pin TSSOP package. The
MP5221 Dual channel is available in the 8-pin
MSOP package and the MP5121 single
channel is available in 5-pin TSOT package. All
feature a standard operational amplifier pin out.
TFT-LCD Drive Circuits
Electronic Notebooks
Electronic Games
Touch-Screen Displays
Personal Communication Devices
Personal Digital Assistants (PDA)
Portable Instrumentation
Sampling ADC Amplifiers
Wireless LAN
Office Automation
Active Filters
ADC/DAC Buffer
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
Vs+
10uF
VIN+
0.1nF
U1
+
MP 5121
-
TFT LCD
Co
GND
10uF
0.1nF
Vs-
MP5121_MP5221_MP5421 Rev. 0.91
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MP5121_MP5221_MP5421 –High Speed, single-supply Rail-to-Rail Input-Output Op Amps
ORDERING INFORMATION
Part Number
Package
Top Marking
Free Air Temperature (TA)
MP5121DJ*
MP5221DK**
MP5421DM***
TSOT23-5
MOSP-8
TSSOP-14
2R
5221D
M5421DM
–40C to +85C
* For Tape and Reel, add suffix -Z (eg. MP5121DJ-Z).
For RoHS Compliant Packaging, add suffix-LF (eg. MP5121DJ-LF-Z).
** For Tape and Reel, add suffix -Z (eg. MP5221DK-Z).
For RoHS Compliant Packaging, add suffix-LF (eg. MP5221DK-LF-Z).
*** For Tape and Reel, add suffix -Z (eg. MP5421DM-Z).
For RoHS Compliant Packaging, add suffix-LF (eg. MP5421DM-LF-Z).
PACKAGE REFERENCE
MP5221
(8-PIN MSOP)
MP5121
(5-PIN TSOT)
TOP VIEW
TOP VIEW
VOUT 1
VOUTA
1
VINA-
2
8
VS+
7
VOUTB
6
VINB-
5
VINB+
+
VINA+
3
VS-
4
--
-4 VIN-
VIN+ 3
+
+
VS+
--
VS- 2
5
MP5421
(14-PIN TSSOP)
TOP VIEW
14 VOUTD
VINA-
2
VINA+
3
12 VIND+
VS+
4
11
VINB+
5
10 VINC+
VINB-
6
VOUTB
7
--
+
+
--
--
+
1
+
VOUTA
13 VIND-
VS-
9 VINC8 VOUTC
--
MP5121_MP5221_MP5421 Rev. 0.91
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MP5121_MP5221_MP5421 –High Speed, single-supply Rail-to-Rail Input-Output Op Amps
ABSOLUTE MAXIMUM RATINGS (1)
Recommended Operating Conditions
(TA=25C)
Single Power Supply Operation VS
......................................................3.2V to + 20V
Operating Junct. Temp (TJ)..... –40C to +125C
Single Supply Voltage VS .............–0.3V to +23V
Input Voltage.................... VS- - 0.5V, VS+ +0.5V
Maximum Continuous Output Current
.................................................................. 50mA
Maximum Die Temperature ....................+125°C
Storage Temperature............... -60°C to +150°C
Ambient Operating Temp........... -40°C to +85°C
(2)
Power Dissipation. ...................... See Curves
Thermal Resistance
(4)
θJA
(3)
θJC
MSOP ....................................150 ...... 65.. °C/W
TSOT .....................................220 .... 110.. °C/W
TSSOP ...................................40 ….....6... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB
MP5121_MP5221_MP5421 Rev. 0.91
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MP5121_MP5221_MP5421 –High Speed, single-supply Rail-to-Rail Input-Output Op Amps
ELECTRICAL CHARACTERISTICS
VS = 10V, VCM = 5V, VOUT = 5V, RL = 10kΩ and CL = 10pF, TA = TJ =25°C, unless otherwise noted.
Parameter
INPUT CHARACTERISTICS
Input Offset Voltage
Average Offset Voltage
Drift
Input Bias Current
Input Impedance
Input Capacitance
Symbol
Typ
Max
Units
VOS
2
20
mV
TCVOS
5
IB
RIN
0.5
1
CIN
1.35
Common-Mode Input
CMIR
Range
Common-Mode
CMRR
Rejection Ratio
Open Loop Gain
AVOL
OUTPUT CHARACTERISTICS
Output Swing Low
VOL
Output Swing High
VOH
Short Circuit Current
ISC
POWER SUPPLY PERFORMANCE
Power
Supply
PSRR
Rejection Ratio
Supply Current (Per
IS
Amplifier)
DYNAMIC PERFORMANCE
Slew Rate (Rise/Fall)
Settling to +0.1% (AV =
+1)
-3dB Bandwidth
Gain-Bandwidth
Product
Phase Margin
Channel Separation
Condition
Min
-5.5
μ/°C
2
μA
GΩ
pF
+5.5
V
for VIN from -5.5V to +5.5V
60
85
dB
-4.5V ≤ VOUT ≤ +4.5V
50
60
dB
-4.95
4.82
70
V
V
mA
95
dB
No load
1.6
mA
-4.0V ≤ VOUT ≤ +4.0V, 20%
to 80%
45
V/μs
(AV = +1), VO = 2V step
500
ns
BW
RL = 10kΩ, CL = 10pF
20
MHz
GBWP
RL = 10kΩ, CL = 10pF
14
MHz
RL = 10kΩ, CL = 10pF
f = 5MHz (MP5221
MP5421 only)
50
SR
tS
PM
CS
IL = -5mA
IL = -5mA
Sourcing
VS is moved from ±2.25V to
±7.75V
70
&
MP5121_MP5221_MP5421 Rev. 0.91
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12/26/2013
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70
dB
4
MP5121_MP5221_MP5421 –High Speed, single-supply Rail-to-Rail Input-Output Op Amps
ELECTRICAL CHARACTERISTICS (continued)
VS = 20V, VCM = 10V, VOUT = 10V, RL = 10kΩ and CL = 10pF, TA = 25°C, unless otherwise noted.
Parameter
INPUT CHARACTERISTICS
Input Offset Voltage
Average Offset Voltage
Drift
Input Bias Current
Input Impedance
Input Capacitance
Symbol
Typ
Max
Units
VOS
2
20
mV
TCVOS
5
IB
RIN
0.5
1
CIN
1.35
pF
±8
V
Common-Mode
Input
CMIR
Range
Common-Mode
CMRR
Rejection Ratio
Open Loop Gain
AVOL
OUTPUT CHARACTERISTICS
Output Swing Low
VOL
Output Swing High
VOH
Short Circuit Current
ISC
POWER SUPPLY PERFORMANCE
Power Supply Rejection
PSRR
Ratio
Supply Current (Per
IS
Amplifier)
DYNAMIC PERFORMANCE
Slew Rate
Settling to +0.1% (AV =
+1)
-3dB Bandwidth
Gain-Bandwidth
Product
Phase Margin
Channel Separation
Condition
Min
μ/°C
2
μA
GΩ
for VIN from -8V to +8V
60
85
dB
-9V ≤ VOUT ≤ +9V
50
60
dB
-4.95
4.82
70
V
V
mA
95
dB
No load
1.6
mA
-4.0V ≤ VOUT ≤ +4.0V, 20%
to 80%
45
V/μs
(AV = +1), VO = 2V step
500
ns
BW
RL = 10kΩ, CL = 10pF
20
MHz
GBWP
RL = 10kΩ, CL = 10pF
14
MHz
RL = 10kΩ, CL = 10pF
f = 5MHz (MP5221
MP5421 only)
50
SR
tS
PM
CS
IL = -5mA
IL = -5mA
Sourcing
VS is moved from ±2.25V to
±7.75V
70
&
MP5121_MP5221_MP5421 Rev. 0.91
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12/26/2013
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
70
dB
5
MP5121_MP5221_MP5421 –High Speed, single-supply Rail-to-Rail Input-Output Op Amps
TYPICAL PERFORMANCE CHARACTERISTICS
VS+=5V, VS-=-5V, RL=10KΩ, CL=12pF, TA=25ºC, unless otherwise noted.
VOS vs. VIN
Supply Current vs.
Supply Voltage
PSRR vs. Frequency
1.4
15
1.2
10
1
5
0.8
0.6
100
90
80
PSRR ( dB )
20
VOS (mV)
0
-5
50
40
30
0.2
-15
20
2
4
6
8
-20
-4
10 12 14 16 18
-3
-2
-1
Open Loop
60
200
50
180
40
30
120
20
100
Phase
80
0
Gain (dB)
160
140
Gain
60
40
-20
1
10
100
20
10
10
0.1
4
0
1000 10000 100000
-50
Phase
-8
-100
-150
2
1
10
100
1000 10000 100000
Frequency (kHz)
100
50
10
0
0
-10
Phase
-20
-50
-100
-30
-150
-40
Output Noise vs. Frequency
MP5121
1000
0
100
-2
10
Av=1
-5
1
20
-1
-4
-16
150
Gain
10000
10K
1K
560
560
150
-3
-12
200
30
Frequency Response vs. RL
Magnitude (dB)
0pF
50
0
3
0
150
40
Frequency (kHz)
4
1000pF
50
Frequency (kHz)
12
100pF
200
-200
-50
0.1 1 10 100 1000 10000 100000
5
50pF
100000
-50
-200
0.1 1 10 100 1000 10000 100000
16
8
1000
Closed Loop Av=2
Gain
-10
-20
10
Fre que ncy (kHz )
0
Frequency Response vs. CL
-4
3
100
Frequency ( kHz )
4
2
-30
-40
20
-40
1
Closed Loop Av=1
80
40
0
VIN ( V )
Supply Voltage (V)
Gain (dB)
60
0.4
0
Gain (dB)
70
-10
Gain (dB)
Supply Current (mA)
MP5121
1.6
0.1
10
1000
100000
1
0.1
Frequency (kHz)
MP5121_MP5221_MP5421 Rev. 0.91
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12/26/2013
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10
1000
100000
Frequency (Hz)
6
MP5121_MP5221_MP5421 –High Speed, single-supply Rail-to-Rail Input-Output Op Amps
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VS+=5V, VS-=-5V, RL=10KΩ, CL=12pF, TA=25ºC, unless otherwise noted.
Vs+
2V/div
VIN
0.1V/div
VOUT
0.5V/div
VIN
0.1V/div
VIN
0.1V/div
VOUT
50mV/div
VOUT
0.5V/div
200ns/div
Vs+
1V/div
VIN
0.2V/div
VIN
1V/div
VOUT
1V/div
VOUT
5V/div
VOUT
1V/div
4ns/div
VIN
0.2V/div
VIN
1V/div
VOUT
1V/div
VOUT
5V/div
VOUT
2V/div
MP5121_MP5221_MP5421 Rev. 0.91
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MP5121_MP5221_MP5421 –High Speed, single-supply Rail-to-Rail Input-Output Op Amps
OPERATION DESCRIPTION
The MP5121/MP5221/MP5421 are high-speed,
high slew rate, rail-to-rail input-output operational
amplifiers. These devices can operate up to
50mA output current and 20MHz bandwidth.
INPUT
The MP5X21 can operate with inputs from rail to
rail. It does this through the use of two differential
pairs. A traditional PNP differential pair is used
from 0.5V below the negative rail to 1V below the
positive rail. At that point the input is switched to
a NPN differential pair to operate up to 0.5V
above the positive rail. The transition from one
input differential pair to the other can cause
distortion. Inputs near the rails can also cause
distortion and degradation of other specifications.
Transients
In addition to the ripple and noise on the power
supplies, there are also transient voltage
changes. This can be caused by another device
on the same power supply suddenly drawing
current or suddenly stopping a current draw. The
design engineer should insure that there are no
damaging transients induced on the power
supply lines when the op amp suddenly changes
current delivery.
LAYOUT
Ground Plane
Connect the opamp to a ground plane rather than
ground traces for very low impedance. If this is
not possible then make the ground traces as fat
and short as possible.
OUTPUT
Decoupling
Current Rating
The MP5X21 can sink or source 50mA. It can
provide high values of peak current, and much
reduced value of average current. When the
output voltages are near the rails the ability to
provide current will be reduced.
High performance devices such as the MP5X21,
with high slew rates and high currents, need
large decoupling capacitors. These should be
placed as close to the supply pins as possible.
Use ground and power planes to make these
decoupling capacitors as effective as possible. If
that is not realistic then make the ground and
power traces as thick and short as possible.
Output Power
Make sure that the rms power is such that the die
junction temperature will remain below 125ºC
Power Requirements
The MP5X21 operates from a voltage supply, of
±Vs and ground, or from a Vs split supply.
Single-ended voltage range is +3.2V to +20V.
PSRR and Noise
A common figure of merit is the PSRR (Power
Supply Rejection Ratio). The PSRR is a measure
of how much noise gets from the supply rails into
the output. Notice that the PSRR falls with
increasing frequency. In order to have good
PSRR the ripple voltages and frequencies of the
systems switching power supplies should be
measured. If the PSRR is not acceptable,
inductors can be inserted in series with the power
supply rails to provide improved PSRR. Also
make sure there are no
transients created on the power supply lines
when the MP5X21 load current changes
suddenly. This can damage the part.
MP5121_MP5221_MP5421 Rev. 0.91
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MP5121_MP5221_MP5421 –High Speed, single-supply Rail-to-Rail Input-Output Op Amps
PACKAGE INFORMATION
TSOT23-5
0.95
BSC
0.60
TYP
2.80
3.00
5
4
1.20
TYP
1.50
1.70
1
2.60
TYP
2.60
3.00
3
TOP VIEW
RECOMMENDED LAND PATTERN
0.84
0.90
1.00 MAX
0.09
0.20
SEATING PLANE
0.30
0.50
0.95 BSC
0.00
0.10
SEE DETAIL "A"
FRONT VIEW
SIDE VIEW
NOTE:
GAUGE PLANE
0.25 BSC
0o-8o
DETAIL A
0.30
0.50
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSION OR GATE BURR.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSION.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.10 MILLIMETERS MAX.
5) DRAWING CONFORMS TO JEDEC MO-193, VARIATION AA.
6) DRAWING IS NOT TO SCALE.
MP5121_MP5221_MP5421 Rev. 0.91
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MP5121_MP5221_MP5421 –High Speed, single-supply Rail-to-Rail Input-Output Op Amps
PACKAGE INFORMATION
MSOP8
0.114(2.90)
0.122(3.10)
5
8
0.114(2.90)
0.122(3.10)
PIN 1 ID
(NOTE 5)
0.010(0.25)
0.014(0.35)
0.187(4.75)
0.199(5.05)
4
1
0.0256(0.65)BSC
BOTTOM VIEW
TOP VIEW
GAUGE PLANE
0.010(0.25)
0.030(0.75)
0.037(0.95)
0.043(1.10)MAX
SEATING PLANE
0.002(0.05)
0.006(0.15)
FRONT VIEW
0o-6o
0.016(0.40)
0.026(0.65)
0.004(0.10)
0.008(0.20)
SIDE VIEW
NOTE:
0.181(4.60)
0.040(1.00)
0.016(0.40)
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS
IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSION OR GATE BURR.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR
PROTRUSION.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.004" INCHES MAX.
5) PIN 1 IDENTIFICATION HAS HALF OR FULL CIRCLE OPTION.
6) DRAWING MEETS JEDEC MO-187, VARIATION AA.
7) DRAWING IS NOT TO SCALE.
0.0256(0.65)BSC
RECOMMENDED LAND PATTERN
MP5121_MP5221_MP5421 Rev. 0.91
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MP5121_MP5221_MP5421 –High Speed, single-supply Rail-to-Rail Input-Output Op Amps
PACKAGE INFORMATION
TSSOP14
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MP5121_MP5221_MP5421 Rev. 0.91
12/26/2013
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MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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