TP5551/TP5552 / TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Features
Low Offset Voltage: 5 μV (Max)
Zero Drift: 0.05 µV/°C (Max)
1/f Noise Corner Down to 0.1Hz:
－
15 nV/√Hz Input Noise Voltage @1kHz
－
350 nVP-P Noise Voltage @0.1Hz to 10Hz
Slew Rate: 2.5 V/μs
Bandwidth: 3.5 MHz
Low Supply Current: 500 µA per Amplifier
Low Input Bias Current: 50 pA Typical
Rail-to-Rail Output Voltage Range
High Gain, CMRR, PSRR: 130 dB
7 kV HBM ESD Rating
–40°C to 125°C Operation Range
Applications
Description
The TP555x op-amps are single/dual/quad chopper
stabilized zero-drift operational amplifier optimized for
single or dual supply operation from 1.8V to 5.5V and
±0.9V to ±2.75V. The TP555x features very low input
offset voltage and low noise with 1/f noise corner down
to 0.1Hz. The TP555x is designed to have ultra low
offset voltage and offset temperature drift, wide gain
bandwidth and rail-to-rail input/output swing while
minimizing power consumption.
The TP555x family can provide very low offset voltage
(5μV Max.) and near-zero drift over time and temperature
with excellent CMRR and PSRR.
The TP5551 (single version) is available in SOT23,
SC70 and SO-8 packages. The TP5552 (dual version)
is offered in MSOP-8 and SO-8 packages. The TP5554
(quad version) is available in TSSOP-14 and SO-14
packages. All versions are specified for operation from
-40°C to 125°C.
3PEAK and the 3PEAK logo are registered trademarks of
3PEAK INCORPORATED. All other trademarks are the property of
their respective owners.
Medical Instrumentation
Temperature Measurements
Precision Current Sensing
ADC Drivers
Process Control Systems
Precision Voltage Reference Buffers
Pin Configuration (Top View)
Related Zero-Drift RRO Op-amps
VOS (Max.)
10 μV
5 μV
5 μV
GBWP
350 kHz
1.5 MHz
3.5 MHz
Supply Current
34 μA
220 μA
500 μA
eN at 1 kHz
55 nV/√Hz
25 nV/√Hz
15 nV/√Hz
Single
TP5531
TP5541
TP5551
Dual
TP5532
TP5542
TP5552
Quad
TP5534
TP5544
TP5554
Offset Voltage Distribution
Population Of Amplifiers
35
30
25
20
15
10
5
www.3peakic.com
Offset Voltage(μV)
REV1.0
2.5
2
2.25
1.5
1.75
1
1.25
0
-1
-1.5
-1.25
-2
-1.75
-2.5
-2.25
0
1
TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Pin Configuration (Top View)
Order Information
Model Name
TP5551
TP5551U
TP5552
TP5554
Order Number
Package
Transport Media, Quantity
Marking
Information
TP5551-TR
SOT23-5
Tape and Reel, 3000
E51T
TP5551-CR
SC70-5
Tape and Reel, 3000
E51C
TP5551-SR
SO-8
Tape and Reel, 4000
E51S
TP5551U-TR
SOT23-5
Tape and Reel, 3000
E51U
TP5551U-CR
SC70-5
E51V
TP5552-SR
SO-8
Tape and Reel, 3000
Tape and Reel, 4000
E52S
TP5552-VR
MSOP-8
Tape and Reel, 3000
E52V
TP5554-SR
SO-14
Tape and Reel, 2500
E54S
TP5552-TR
TSSOP-14
Tape and Reel, 3000
E54T
Absolute Maximum Ratings Note 1
Supply Voltage: .....................................................7V
–
+
Current at Supply Pins……………............... ±50mA
Input Voltage: ....................... ……V – 0.3 to V + 0.3
Operating Temperature Range.......–40°C to 125°C
Input Current: +IN, –IN Note 2........................... ±20mA
Maximum Junction Temperature................... 150°C
Output Current: OUT...................................... ±60mA
Storage Temperature Range.......... –65°C to 150°C
Output Short-Circuit Duration
Note 3
…....... Indefinite
Lead Temperature (Soldering, 10 sec) ......... 260°C
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to
any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.
Note 2: The inputs are protected by ESD protection diodes to each power supply. If the input extends more than 500mV beyond the
power supply, the input current should be limited to less than 10mA.
Note 3: A heat sink may be required to keep the junction temperature below the absolute maximum. This depends on the power
supply voltage and how many amplifiers are shorted. Thermal resistance varies with the amount of PC board metal connected to
the package. The specified values are for short traces connected to the leads.
2
REV1.0
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TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
ESD, Electrostatic Discharge Protection
Symbol
Parameter
Condition
Minimum Level
Unit
HBM
Human Body Model ESD
MIL-STD-883H Method 3015.8
7
kV
CDM
Charged Device Model ESD
JEDEC-EIA/JESD22-C101E
2
kV
Electrical Characteristics
The denotes the specifications which apply over the full operating temperature range, TA = -40°C to +125°C .
At TA = 27°C, VDD=5V, RL=10K, Vcm=VDD/2, unless otherwise noted.
VDD=5V,
PARAMETER
SYMBOL
VDD
IQ
CONDITIONS
Supply Voltage Range
Quiescent current per amplifier
MIN
TYP
1.8
IO = 0
500
dVOS/dT
vs. Temperature
PSRR
vs. Power Supply
VN(P-P)
Input Voltage Noise
VN
Input Voltage Noise Density
f = 1kHz
15
CIN
Input Capacitor
Differential
Common-Mode
3
2
±50
Input grounded, unity gain.
ISC
CL
GBW
SR
tOR
tS
AVO
Open-Loop Voltage Gain
IOS
VCM
CMRR
VO
θJA
Thermal Resistance Junction to
Ambient
5.5
V
820
Input Offset Voltage
Input Current
Over temperature
Input Offset Current
Common-mode Voltage Range
Common-mode Rejection Ratio
Output Voltage Swing from Rail
Over temperature
Short-circuit Current
Maximum Capacitive Load
Unity Gain Bandwidth
Slew Rate
Overload Recovery Time
Settling Time to 0.01%
UNITS
590
Over temperature
VOS
IB
MAX
±1
±5
μV
0.008
0.05
μV/°C
VS = +1.8V to +5.5V
0.5
f = 0.01Hz to 1Hz
0.1
f = 0.1Hz to 10Hz
0.35
±100
(V-)-0.1
110
RL = 10kΩ
RL = 10kΩ
CL = 100pF
G = +1, CL = 100pF
G = -10
CL = 100pF
(V-)+0.1V < VO < (V+)-0.1V,
RL = 100kΩ
SOT23-5
MSOP-8
SO-8
SC70-5
SO-14
TSSOP-14
100
μA
μV/V
μVPP
nV/√Hz
pF
±200
800
±400
(V+)+0.1
130
5
10
10
±60
pA
pA
V
dB
mV
1000
3.5
2.5
35
20
mA
pF
MHz
V/μs
μs
μs
120
dB
200
210
158
250
83
100
°C/W
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REV1.0
3
TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Typical Performance Characteristics
Offset Voltage Distribution
Supply Current Distribution
35
Population Of Amplifiers
50
Population Of Amplifiers
45
40
35
30
25
20
15
30
25
20
15
10
10
5
5
2.5
2
2.25
1.5
1.75
1
1.25
0
-1
-1.5
Supply Curent(μA)
-1.25
-2
-1.75
-2.5
0
500 510 520 530 540 550 560 570 580 590 600
-2.25
0
Offset Voltage(μV)
Quiesent Current vs Temperature
Voltage Noise Spectral Density vs Frequency
1000
100
900
Volage noise (nV/√Hz)
800
I Q(μV)
700
600
500
400
300
10
200
100
1
‐50
‐25
0
25
50
75
100
125
150
0.01
0.1
1
100
1k
10k
CMRR vs FREQUENCY
OPEN-LOOP GAIN vs FREQUENCY
120
140
100
90
100
120
80
80
100
70
60
50
40
40
CMRR(dB)
60
Phase(deg)
Aol(dB)
10
Frequency (Hz)
Temperature(°C)
30
20
80
60
40
20
0
20
10
‐20
10
100
1k
10k
100k
1M
0
0
10M
1
Frequency(Hz)
10
100
1k
10k
100k
1M
Frequency(Hz)
4
REV1.0
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TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Typical Performance Characteristics(continue)
www.3peakic.com
REV1.0
5
TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
TYPICAL APPLICATIONS
Single Supply, High Gain Amplifier, AV = 10,000 V/V
Thermistor Measurement
6
REV1.0
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TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Pin Functions
-IN: Inverting Input of the Amplifier.
+IN: Non-Inverting Input of Amplifier.
OUT: Amplifier Output. The voltage range extends to
within mV of each supply rail.
V+ or +Vs: Positive Power Supply. Typically the voltage
is from 1.8V to 5.5V. Split supplies are possible as long
as the voltage between V+ and V– is between 1.8V and
5.5V. A bypass capacitor of 0.1μF as close to the part as
possible should be used between power supply pins or
between supply pins and ground.
V- or -Vs: Negative Power Supply. It is normally tied to
ground. It can also be tied to a voltage other than
ground as long as the voltage between V+ and V– is from
1.8V to 5.5V. If it is not connected to ground, bypass it
with a capacitor of 0.1μF as close to the part as
possible.
Operation
The TP5551/2/4 op amps are zero drift, rail-to-rail operation amplifiers that can be run from a single-supply voltage.
They use an auto-calibration technique with a time-continuous 3.5MHz op amp in the signal path while consuming only
550μA of supply current per channel. This amplifier is zero-corrected with an 150kHz clock. Upon power-up, the
amplifier requires approximately 100μs to achieve specified Vos accuracy. This design has no aliasing or flicker noise.
Applications Information
Rail-To-Rail Input And Output
The TP5551/2/4 feature rail-to-rail input and output with a supply voltage from 1.8V to 5.5 V. This allows the amplifier
inputs to have a wide common mode range(50mV beyond supply rails)while maintaining high CMRR(120dB) and
maximizes the signal to noise ratio of the amplifier by having the VOH and VOL levels be at the V+ and V- rails,
respectively.
Input Protection
The TP5551/2/4 have internal ESD protection diodes that are connect between the inputs and supply rail. When either
input exceeds one of the supply rails by more than 300mV, the ESD diodes become forward biased and large amounts
of current begin to flow through them. Without current limiting, this excessive fault current causes permanent damage
to the device. Thus an external series resistor must be used to ensure the input currents never exceed 10mA (see
Figure xx).
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REV1.0
7
TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Low Input Referred Noise
Flicker noise, as known as 1/f noise, is inherent in semiconductor devices and increases as frequency decreases. So
at lower frequencies, flicker noise dominates, causing higher degrees of error for sub-Hertz frequencies or dc precision
application.
The TP5551/2/4 amplifiers are chopper stabilized amplifiers, the flicker noise is reduced greatly because of this
technique. This reduction in 1/f noise allows the TP5551/2/4 to have much lower noise at dc and low frequency
compared to standard low noise amplifier.
Residual voltage ripple
The chopping technique can be used in amplifier design due to the internal notch filter. Although the chopping related
voltage ripple is suppressed, higher noise spectrum exists at the chopping frequency and its harmonics due to residual
ripple.
So if the frequency of input signal is nearby the chopping frequency, the signal maybe interfered by the residue ripple.
To further suppress the noise at the chopping frequency, it is recommended that a post filter be placed at the output of
the amplifier.
Broad Band And External Resistor Noise Considerations
The total broadband noise output from any amplifier is primarily a function of three types of noise: input voltage noise
from the amplifier, input current noise from the amplifier, and thermal (Johnson) noise from the external resistors used
around the amplifier. These noise sources are not correlated with each other and their combined noise can be
summed in a root sum squared manner. The full equation is given as:
en total [en2 4kTRs (in Rs ) 2 ]1/2
Where:
en= the input voltage noise density of the amplifier.
in= the input current noise of the amplifier.
RS= source resistance connected to the noninverting terminal.
k= Boltzmann’s constant (1.38x10-23J/K). T= ambient temperature in Kelvin (K).
The total equivalent rms noise over a specific bandwidth is expressed as:
en ,rms en total BW
The input voltage noise density (en) of the TP555x is 55 nV/√Hz, and the input current noise can be neglected. When
the source resistance is 190 kΩ, the voltage noise contribution from the source resistor and the amplifier are equal.
With source resistance greater than 190 kΩ, the overall noise of the system is dominated by the Johnson noise of the
resistor itself.
High Source Impedance Application
The TP5551/2/4 uses switches at the chopper amplifier input, the input signal is chopped at 125kHz to reduce input
offset voltage down to 10µV. The dynamic behavior of these switches induces a charge injection current to the input
terminals of the amplifier. The charge injection current has a DC path to ground through the resistances seen at the
input terminals of the amplifier. Higher input impedance cause an apparent shift in the input bias current of the
amplifier.
Because the chopper amplifier has charge injection currents at each terminal, the input offset current will be larger
than standard amplifiers. The Ios of TP5551/2/4 are 150pA under the typical condition. So the input impedance should
be balanced across each input(see Figure xx). The input impedance of the amplifier should be matched between the
IN+ and IN- terminals to minimize total input offset current. Input offset currents show up as an additional output offset
voltage, as shown in the following equation:
8
REV1.0
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TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
vos ,total vos R f I os
For a gain configure using 1MΩ feedback resistor, a 150pA total input offset current will have an additional output
offset voltage of 0.15mV. By keeping the input impedance low and balanced across the amplifier inputs, the input
offset current effect will be suppress efficiently.
Ri
Rf
Vref
+2.5V
TP5551
Rs
Vout
VIN
-2.5V
Rb
Vref
Figxx Circuit Implication for reducing Input offset current effect
PCB Surface Leakage
In applications where low input bias current is critical, Printed Circuit Board (PCB) surface leakage effects need to be
considered. Surface leakage is caused by humidity, dust or other contamination on the board. It is recommended to
use multi-layer PCB layout and route the OPA’s -IN and +IN signal under the PCB surface.
The effective way to reduce surface leakage is to use a guard ring around sensitive pins (or traces). The guard ring is
biased at the same voltage as the sensitive pin. An example of this type of layout is shown in Figure 2 for Inverting
Gain application.
1. For Non-Inverting Gain and Unity-Gain Buffer:
a) Connect the non-inverting pin (VIN+) to the input with a wire that does not touch the PCB surface.
b) Connect the guard ring to the inverting input pin (VIN–). This biases the guard ring to the Common Mode input voltage.
2. For Inverting Gain and Trans-impedance Gain Amplifiers (convert current to voltage, such as photo detectors):
a) Connect the guard ring to the non-inverting input pin (VIN+). This biases the guard ring to the same reference voltage as the
op-amp (e.g., VDD/2 or ground).
b) Connect the inverting pin (VIN–) to the input with a wire that does not touch the PCB surface.
Figure
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The Layout of Guard Ring
REV1.0
9
TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Package Outline Dimensions
SOT23-5 / SOT23-6
Symbol
Dimensions
Dimensions
In Millimeters
In Inches
Min
Max
Min
Max
A1
0.000
0.100
0.000
0.004
A2
1.050
1.150
0.041
0.045
b
0.300
0.400
0.012
0.016
D
2.820
3.020
0.111
0.119
E
1.500
1.700
0.059
0.067
E1
2.650
2.950
0.104
0.116
e
10
REV1.0
0.950TYP
0.037TYP
e1
1.800
2.000
0.071
0.079
L1
0.300
0.460
0.012
0.024
θ
0°
8°
0°
8°
www.3peakic.com
TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Package Outline Dimensions
SC-70-6 (SOT363)
Symbol
Dimensions
Dimensions In
In Millimeters
Inches
Min
Max
Min
Max
A1
0.000
0.100
0.000
0.004
A2
0.900
1.000
0.035
0.039
b
0.150
0.350
0.006
0.014
C
0.080
0.150
0.003
0.006
D
2.000
2.200
0.079
0.087
E
1.150
1.350
0.045
0.053
E1
2.150
2.450
0.085
0.096
e
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0.650TYP
0.026TYP
e1
1.200
1.400
0.047
0.055
L1
0.260
0.460
0.010
0.018
θ
0°
8°
0°
8°
REV1.0
11
TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Package Outline Dimensions
SO-8 (SOIC-8)
A2
C
θ
L1
A1
e
E
D
Symbol
E1
12
REV1.0
Dimensions In
In Millimeters
Inches
Min
Max
Min
Max
A1
0.100
0.250
0.004
0.010
A2
1.350
1.550
0.053
0.061
b
0.330
0.510
0.013
0.020
C
0.190
0.250
0.007
0.010
D
4.780
5.000
0.188
0.197
E
3.800
4.000
0.150
0.157
E1
5.800
6.300
0.228
0.248
e
b
Dimensions
1.270 TYP
0.050 TYP
L1
0.400
1.270
0.016
0.050
θ
0°
8°
0°
8°
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TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Package Outline Dimensions
MSOP-8
Dimensions
Dimensions In
In Millimeters
Inches
Min
Max
Min
Max
A
0.800
1.200
0.031
0.047
A1
0.000
0.200
0.000
0.008
A2
0.760
0.970
0.030
0.038
b
0.30 TYP
0.012 TYP
C
0.15 TYP
0.006 TYP
D
2.900
e
0.65 TYP
E
2.900
3.100
0.114
0.122
E1
4.700
5.100
0.185
0.201
L1
0.410
0.650
0.016
0.026
θ
0°
6°
0°
6°
Symbol
E
E1
e
b
D
3.100
0.114
0.122
0.026
A1
R1
R
θ
L1
L
L2
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REV1.0
13
TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Package Outline Dimensions
TSSPO-14
Dimensions
E1
E
e
A
A2
c
D
Symbol
In Millimeters
MIN
TYP
MAX
A
-
-
1.20
A1
0.05
-
0.15
A2
0.90
1.00
1.05
b
0.20
-
0.28
c
0.10
-
0.19
D
4.86
4.96
5.06
E
6.20
6.40
6.60
E1
4.30
4.40
4.50
e
L
A1
R1
R
0.65 BSC
0.45
0.60
L1
1.00 REF
L2
0.25 BSC
0.75
R
0.09
-
-
θ
0°
-
8°
θ
L1
14
REV1.0
L
L2
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TP5551 / TP5552/TP5554
Ultra Low Noise, 3.5MHz, RRIO Zero-Drift Op-amps
Package Outline Dimensions
SO-14 (SOIC-14)
Dimensions
In Millimeters
Symbol
MIN
TYP
MAX
A
1.35
1.60
1.75
A1
0.10
0.15
0.25
A2
1.25
1.45
1.65
b
0.36
D
8.53
8.63
8.73
E
5.80
6.00
6.20
E1
3.80
3.90
4.00
e
L
0.49
1.27 BSC
0.45
0.60
L1
1.04 REF
L2
0.25 BSC
θ
0°
0.80
8°
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REV1.0
15
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