TP1562A-SR_技术文档

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision, Op Amps

Description

3PEAK

Features

The TP156xA series are CMOS single, dual, and

quad RRIO op-amps with low offset, low power and

stable high frequency response. They incorporate

3PEAK‟s proprietary and patented design

techniques to achieve very good AC performance

with 6MHz bandwidth, 4.5V/μs slew rate and low

distortion while drawing only 500μA of quiescent

current per amplifier. The input common-mode

voltage range extends 300mV beyond V– and V+,

and the outputs swing rail-to-rail. The TP156xA

family can be used as plug-in replacements for

many commercially available op-amps to reduce

power and improve input/output range and

performance.



Stable 6 MHz GBWP in V_CMfrom 0V to V_S

Excellent EMI Suppress Performance

Offset Voltage: ±400 μV Maximum

Offset Voltage Temperature Drift: 1 μV/°C

Input Bias Current: 1 pA Typical

THD+Noise: -115 dB at 1kHz, -99 dB at 10kHz

High CMRR/PSRR: 110/95 dB

Beyond the Rails Input Common-Mode Range

Outputs Swing to within 3 mV of Each Rail

No Phase Reversal for Overdriven Inputs

High Output Capability: 100mA

The TP156xA Op-amps are unity gain stable with

any capacitive load. They operate from either single

+2.1V to +6.0V supply or dual ±1.05V to ±3.0V

supplies. Analog trim and calibration routine reduce

input offset voltage to below 400μV, and proprietary

precision temperature compensation technique

makes offset voltage temperature drift at 1μV/°C.

Adaptive biasing and dynamic compensation

enables the TP156xA to achieve „THD +Noise‟ for

1kHz/10kHz 2V_PPsignal at -115dB/ -99dB. Beyond

the rails input and rail-to-rail output characteristics

allow the full power-supply voltage to be used for

signal range.

Shutdown Current: 0.2 μA (TP1561NA)

Supply Voltage Range:

-

Single +2.1 V to +6.0 V Supply

Or Dual ±1.05 V to ±3.0 V Supplies



–40°C to 125°C Operation Temperature Range

ESD Rating: 8KV – HBM, 2KV–CDM and 500V–MM

Green, Popular Type Package

Applications



Multimedia Audio

Headphone Drivers

LCD Drivers

The combination of features makes the TP156xA

ideal choices for audio amplification of computers,

sound ports, and other consumer Audio. The

TP156xA Op-amp is very stable, and it is capable of

driving heavy capacitive loads such as those found

in LCDs. The ability to swing rail-to-rail at the inputs

and outputs enables designers to buffer CMOS

DACs, ASICs, or other wide output swing devices in

single-supply systems.

Photo Diode Pre-amp

Medical Equipments

Portable Devices

ASIC Input or Output

Sensor Interfaces

3PEAK and the 3PEAK logo are registered trademarks of

3PEAK INCORPORATED. All other trademarks are the property

of their respective owners.

Pin Configuration(Top View)

TP1561A

5-Pin SOT23/SC70

-T and -C Suffixes

TP1564A

TP1562A

14-Pin SOIC/TSSOP

1

2

3

5

4

8-Pin SOIC/TSSOP/MSOP

Out

﹢Vs

-S and -T Suffixes

-S, -T and -V Suffixes

﹣Vs

1

2

3

4

5

6

7

14

13 ﹣In D

Out A

﹣In A

﹢In A

﹢Vs

Out D

+In

-In

1

2

3

4

8

Out A

﹢Vs

A

B

D

C

﹣In A

7

6

5

Out B

﹣In B

﹢In B

A

12

11

﹢In D

﹣Vs

﹢In A

﹣Vs

TP1561NA

6-Pin SOT23

(-T Suffix)

B

10 ﹢In C

﹢In B

﹣In B

Out B

9

8

﹣In C

1

2

3

6

5

4

Out

﹢Vs

Out C

﹣Vs

SHDN

-In

+In

www.3peakic.com.cn

Rev. B.03

1

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Note 1

Absolute Maximum Ratings

Supply Voltage: V⁺– V^–.......................................7V

Input Voltage............................. V^–– 0.3 to V⁺+ 0.3

Differential Input Voltage................................ ...±7V

Input Current: +IN, –IN, SHDN ^{Note 2}.............. ±20mA

SHDN Pin Voltage……………………………V^–to V⁺

Output Short-Circuit Duration ^{Note 3}…............ Infinite

Operating Temperature Range.......–40°C to 125°C

Maximum Junction Temperature................... 150°C

Storage Temperature Range.......... –65°C to 150°C

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 300mV 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.

ESD, Electrostatic Discharge Protection

Symbol

HBM

Parameter

Human Body Model ESD

Machine Model ESD

Condition

Minimum Level

Unit

kV

MIL-STD-883H Method 3015.8

JEDEC-EIA/JESD22-A115

JEDEC-EIA/JESD22-C101E

8

MM

500

2

V

CDM

Charged Device Model ESD

kV

Order Information

Marking

Information

Model Name

Order Number

Package

Transport Media, Quantity

Tape and Reel, 3000

TP1561A-TR

TP1561A-CR

TP1561NA-TR

TP1562A-SR

TP1562A-VR

TP1562A-TR

TP1564A-SR

TP1564A-TR

5-Pin SOT23

5-Pin SC70

561

TP1561A

Tape and Reel, 3000

Tape and Reel, 4000

Tape and Reel, 3000

Tape and Reel, 2500

Tape and Reel, 3000

561

TP1561NA

6-Pin SOT23

8-Pin SOIC

56N

1562A

1564A

TP1562A

TP1564A

8-Pin MSOP

8-Pin TSSOP

14-Pin SOIC

14-Pin TSSOP

Rev. B.03

www.3peakic.com.cn

2

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Electrical Characteristics

The specifications are at T_A= 27° C. V_S= 5.0 V, R_L= 2kΩ, C_L=100pF, unless otherwise noted.

SYMBOL

PARAMETER

Input Offset Voltage

CONDITIONS

V_CM= 0V to 3V

MIN

TYP

MAX

UNITS

V_OS

-400

± 50

1

+400

2

μV

μV/° C

pA

V_OSTC

Input Offset Voltage Drift

-40°C to 125°C

T_A= 27 °C

1

10

I_B

Input Bias Current

25

0.001

8

T_A= 85 °C

pA

I_OS

V_N

Input Offset Current

Input Voltage Noise

pA

f = 0.1Hz to 10Hz

f = 1kHz

μV_PP

19

e_N

i_N

Input Voltage Noise Density

Input Current Noise

nV/√Hz

f = 1kHz

Differential

Common Mode

2

8

7

fA/√Hz

C_IN

Input Capacitance

pF

CMRR

Common Mode Rejection Ratio

V_CM= 0V to 2.5V

V_CM= 0V to 5V

90

63

110

dB

Common-mode Input Voltage

Range

V_CM

V^–-0.1

V⁺-0.1

15

V

PSRR

A_VOL

V_OL, V_OH

R_OUT

I_SC

Power Supply Rejection Ratio

Open-Loop Large Signal Gain

Output Swing from Supply Rail

Closed-Loop Output Impedance

Output Short-Circuit Current

Output Current

V_CM= 1/2 V_S, V_S= 3V to 5V

R_LOAD= 10kΩ

80

95

105

3

dB

mV

Ω

R_LOAD= 10kΩ

G = 1, f =1kHz, I_OUT= 0

Sink or source current

Sink or source current, Output 1V Drop

0.024

100

50

mA

V

I_O

V_DD

Supply Voltage

2.1

6.0

I_Q

Quiescent Current per Amplifier

V_S= 5V

500

0.2

800

μA

pA

V

I_Q(OFF)

Supply Current in Shutdown ^{Note 1}V_S= 5V

V_SHDN= 0.5V

-0.15

-20

I_SHDN

Shutdown Pin Current ^{Note 1}

V_SHDN= 1.5V

V_SHDN= 0V, V_OUT= 0V

V_SHDN= 0V, V_OUT= 5V

Disable

Output Leakage Current in

Shutdown ^{Note 1}

I_LEAK

20

V_IL

V_IH

SHDN Input Low Voltage ^{Note 1}

SHDN Input High Voltage ^{Note 1}

Turn-On Time ^{Note 1}

0.5

Enable

1.0

V

t_ON

SHDN Toggle from 0V to 5V

SHDN Toggle from 5V to 0V

R_LOAD= 1kΩ, C_LOAD= 60pF

f = 1kHz

20

60

15

6

μs

t_OFF

Turn-Off Time ^{Note 1}

μs

PM

Phase Margin

°

GM

Gain Margin

dB

MHz

GBWP

Gain-Bandwidth Product

A_V= 1, V_OUT= 1.5V to 3.5V, C_LOAD= 60pF,

R_LOAD= 1kΩ

SR

t_S

Slew Rate

3.6

4.5

V/μs

μs

Settling Time, 0.1%

Settling Time, 0.01%

Total Harmonic Distortion and

Noise

A_V= 1, 2V Step, C_LOAD= 60pF, R_LOAD

=

0.8

1

1kΩ

THD+N

X_talk

f = 1kHz, A_V=1, R_L= 2kΩ, V_OUT= 1Vp-p

0.0003

110

%

Channel Separation

f = 1kHz, R_L= 2kΩ

dB

Note 1: Specifications apply to the TP1561NA with shutdown

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Rev. B.03

3

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Typical Performance Characteristics

V_S= ±2.75V, V_CM= 0V, R_L= Open, unless otherwise specified.

Offset Voltage Production Distribution

Unity Gain Bandwidth vs. Temperature

10

9

8

7

6

5

4

3

2

1

0

450

Number = 9162 pcs

400

350

300

250

200

150

100

50

0

-50

0

50

100

150

-500 -400 -300 -200 -100

0

100 200 300 400

Temperature(℃)

Offset Voltage(μV)

Open-Loop Gain and Phase

Input Voltage Noise Spectral Density

120

100

80

200

150

100

50

1000

100

10

60

40

20

0

-50

-100

-150

-20

-40

-60

1

10

100

1k

10k

100k

1M

10M

0.1

10

1k

100k

10M

Frequency(Hz)

Frequency (Hz)

Input Bias Current vs. Temperature

Input Bias Current vs. Input Common Mode Voltage

250

200

150

100

50

0

-5

-10

-15

-20

-25

0

-50

-40 -20

0

20

40

60

80 100 120 140

0

1

2

3

4

5

Temperature(℃)

Common Mode Voltage(V)

Rev. B.03

www.3peakic.com.cn

4

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Typical Performance Characteristics

V_S= ±2.75V, V_CM= 0V, R_L= Open, unless otherwise specified. (Continued)

Offset Voltage vs. Common-Mode Voltage

CMRR vs. Frequency

20

0

-20

-40

-60

-80

-100

-120

0

1

2

3

4

5

Common-mode voltage(V)

Quiescent Current vs. Temperature

Short Circuit Current vs. Temperature

140

120

100

80

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

I_SOURCE

I_SINK

60

40

20

0

-50

0

50

100

150

-50

0

50

100

150

Temperature(℃)

Power-Supply Rejection Ratio

Quiescent Current vs. Supply Voltage

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

1.5

2

2.5

3

3.5

4

4.5

5

Supply Voltage(V)

www.3peakic.com.cn

Rev. B.03

5

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Typical Performance Characteristics

V_S= ±2.75V, V_CM= 0V, R_L= Open, unless otherwise specified. (Continued)

PSRR vs. Temperature

CMRR vs. Temperature

140

120

100

80

120

100

80

60

40

20

0

60

40

20

0

-50

0

50

100

150

-50

0

50

100

150

Temperature(℃)

EMIRR IN+ vs. Frequency

Large-Scale Step Response

140

120

100

80

Gain=+1

RL=10kΩ

60

40

20

0

1

10

100

1000

Time (500μs/div)

Frequency(MHz)

Negative Over-Voltage Recovery

Positive Over-Voltage Recovery

Rev. B.03

www.3peakic.com.cn

6

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Typical Performance Characteristics

V_S= ±2.75V, V_CM= 0V, R_L= Open, unless otherwise specified. (Continued)

0.1 Hz TO 10 Hz Input Voltage Noise

Negative Output Swing vs. Load Current

0

-40℃

25℃

-20

-40

125℃

-60

-80

-100

-120

-140

0

1

2

3

4

5

Time (1s/div)

Vout Dropout(V)

Positive Output Swing vs. Load Current

140

120

100

80

60

40

-40℃

20

25℃

125℃

0

1

2

3

4

5

Vout Dropout(V)

www.3peakic.com.cn

Rev. B.03

7

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Pin Functions

–IN: Inverting Input of the Amplifier. Voltage range

-V_S: 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 2.1V to 6V. If it is not connected to ground,

bypass it with a capacitor of 0.1μF as close to the

part as possible.

of this pin can go from V^–– 0.3V to V⁺+ 0.3V.

+IN: Non-Inverting Input of Amplifier. This pin has

the same voltage range as –IN.

+V_S: Positive Power Supply. Typically the voltage is

from 2.1V to 6V. Split supplies are possible as long

as the voltage between V+ and V– is between 2.1V

and 6V. 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.

SHDN: Active Low Shutdown. Shutdown threshold

is 1.0V above negative supply rail. If unconnected,

the amplifier is automatically enabled.

OUT: Amplifier Output. The voltage range extends

to within millivolts of each supply rail.

N/C: No Connection.

Operation

The TP156xA family input signal range extends

beyond the negative and positive power supplies.

The output can even extend all the way to the

negative supply. The input stage is comprised of

two CMOS differential amplifiers, a PMOS stage

and NMOS stage that are active over different

ranges of common mode input voltage. The

Class-AB control buffer and output bias stage uses

a proprietary compensation technique to take full

advantage of the process technology to drive very

high capacitive loads. This is evident from the

transient over shoot measurement plots in the

Typical Performance Characteristics.

Applications Information

Low Supply Voltage and Low Power Consumption

The TP156xA family of operational amplifiers can operate with power supply voltages from 2.1 V to 6.0 V. Each

amplifier draws only 500 μA quiescent current. The low supply voltage capability and low supply current are ideal

for portable applications demanding high capacitive load driving capability and stable wide bandwidth. The

TP156xA family is optimized for wide bandwidth low power applications. They have an industry leading high

GBWP to power ratio and are unity gain stable for any capacitive load. When the load capacitance increases, the

increased capacitance at the output pushed the non-dominant pole to lower frequency in the open loop frequency

response, lowering the phase and gain margin. Higher gain configurations tend to have better capacitive drive

capability than lower gain configurations due to lower closed loop bandwidth and hence higher phase margin.

Low Input Referred Noise

The TP156xA family provides a low input referred noise density of 19 nV/√Hz at 1 kHz. The voltage noise will

grow slowly with the frequency in wideband range, and the input voltage noise is typically 8 μV_P-Pat the frequency

of 0.1 Hz to 10 Hz.

Low Input Offset Voltage

The TP156xA family has a low offset voltage of 400 μV maximum which is essential for precision applications.

The offset voltage is trimmed with a proprietary trim algorithm to ensure low offset voltage for precision signal

processing requirement.

Low Input Bias Current

The TP156xA family is a CMOS OPA family and features very low input bias current in pA range. The low input

bias current allows the amplifiers to be used in applications with high resistance sources. Care must be taken to

minimize PCB Surface Leakage. See below section on “PCB Surface Leakage” for more details.

PCB Surface Leakage

Rev. B.03

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8

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

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. Under low

humidity conditions, a typical resistance between nearby traces is 10¹²Ω. A 5 V difference would cause 5 pA of

current to flow, which is greater than the TP156xA OPA‟s input bias current at +27°C (±1pA, typical). 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 1 for

Inverting Gain application.

1. For Non-Inverting Gain and Unity-Gain Buffer:

a) Connect the non-inverting pin (V_IN+) to the input with a wire that does not touch the PCB surface.

b) Connect the guard ring to the inverting input pin (V_IN–). 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 (V_IN+). This biases the guard ring to the same reference voltage as

the op-amp (e.g., V_DD/2 or ground).

b) Connect the inverting pin (V_IN–) to the input with a wire that does not touch the PCB surface.

Guard Ring

VIN+

VIN-

+VS

Figure 1

Ground Sensing and Rail to Rail Output

The TP156xA family has excellent output drive capability, delivering over 100 mA of output drive current. The

output stage is a rail-to-rail topology that is capable of swinging to within 10mV of either rail. Since the inputs can

go 300 mV beyond either rail, the op-amp can easily perform „true ground‟ sensing.

The maximum output current is a function of total supply voltage. As the supply voltage to the amplifier increases,

the output current capability also increases. Attention must be paid to keep the junction temperature of the IC

below 150°C when the output is in continuous short-circuit. The output of the amplifier has reverse-biased ESD

diodes connected to each supply. The output should not be forced more than 0.5V beyond either supply,

otherwise current will flow through these diodes.

ESD

The TP156xA family has reverse-biased ESD protection diodes on all inputs and output. Input and out pins can

not be biased more than 300 mV beyond either supply rail.

Feedback Components and Suppression of Ringing

Care should be taken to ensure that the pole formed by the feedback resistors and the parasitic capacitance at

the inverting input does not degrade stability. For example, in a gain of +2 configuration with gain and feedback

resistors of 10k, a poorly designed circuit board layout with parasitic capacitance of 5 pF (part +PC board) at the

amplifier‟s inverting input will cause the amplifier to ring due to a pole formed at 8.1 MHz. An additional capacitor

of 5 pF across the feedback resistor as shown in Figure 2 will eliminate any ringing.

Careful layout is extremely important because low power signal conditioning applications demand

high-impedance circuits. The layout should also minimize stray capacitance at the OPA‟s inputs. However some

stray capacitance may be unavoidable and it may be necessary to add a 2 pF to 10 pF capacitor across the

feedback resistor. Select the smallest capacitor value that ensures stability.

www.3peakic.com.cn

Rev. B.03

9

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

5pF

10KOhm

Vout

Vin

CPAR

10KOhm

Figure 2

Shut-down

The single channel OPA versions have SHDN pins that can shut down the amplifier to less than 0.2 μA supply

current. The SHDN pin voltage needs to be within 0.5 V of V– for the amplifier to shut down. During shutdown, the

output will be in high output resistance state, which is suitable for multiplexer applications. When left floating, the

SHDN pin is internally pulled up to the positive supply and the amplifier remains enabled.

Driving Large Capacitive Load

The TP156xA family of OPA is designed to drive large capacitive loads. Refer to Typical Performance

Characteristics for “Phase Margin vs. Load Capacitance”. As always, larger load capacitance decreases overall

phase margin in a feedback system where internal frequency compensation is utilized. As the load capacitance

increases, the feedback loop‟s phase margin decreases, and the closed-loop bandwidth is reduced. This

produces gain peaking in the frequency response, with overshoot and ringing in output step response. The

unity-gain buffer (G = +1V/V) is the most sensitive to large capacitive loads.

When driving large capacitive loads with the TP156xA OPA family (e.g., > 200 pF when G = +1V/V), a small

series resistor at the output (R_ISOin Figure 3) improves the feedback loop‟s phase margin and stability by making

the output load resistive at higher frequencies.

Riso

Vout

Vin

Cload

Figure 3

Power Supply Layout and Bypass

The TP156xA OPA‟s power supply pin (V_DDfor single-supply) should have a local bypass capacitor (i.e., 0.01 μF

to 0.1 μF) within 2 mm for good high frequency performance. It can also use a bulk capacitor (i.e., 1μF or larger)

within 100mm to provide large, slow currents. This bulk capacitor can be shared with other analog parts.

Ground layout improves performance by decreasing the amount of stray capacitance and noise at the OPA‟s

inputs and outputs. To decrease stray capacitance, minimize PC board lengths and resistor leads, and place

external components as close to the op amps‟ pins as possible.

Proper Board Layout

To ensure optimum performance at the PCB level, care must be taken in the design of the board layout. To avoid

leakage currents, the surface of the board should be kept clean and free of moisture. Coating the surface creates

a barrier to moisture accumulation and helps reduce parasitic resistance on the board.

Keeping supply traces short and properly bypassing the power supplies minimizes power supply disturbances

due to output current variation, such as when driving an ac signal into a heavy load. Bypass capacitors should be

Rev. B.03

www.3peakic.com.cn

10

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

connected as closely as possible to the device supply pins. Stray capacitances are a concern at the outputs and

the inputs of the amplifier. It is recommended that signal traces be kept at least 5mm from supply lines to minimize

coupling.

A variation in temperature across the PCB can cause a mismatch in the Seebeck voltages at solder joints and

other points where dissimilar metals are in contact, resulting in thermal voltage errors. To minimize these

thermocouple effects, orient resistors so heat sources warm both ends equally. Input signal paths should contain

matching numbers and types of components, where possible to match the number and type of thermocouple

junctions. For example, dummy components such as zero value resistors can be used to match real resistors in

the opposite input path. Matching components should be located in close proximity and should be oriented in the

same manner. Ensure leads are of equal length so that thermal conduction is in equilibrium. Keep heat sources

on the PCB as far away from amplifier input circuitry as is practical.

The use of a ground plane is highly recommended. A ground plane reduces EMI noise and also helps to maintain

a constant temperature across the circuit board.

Instrumentation Amplifier

The TP156xA op-amp series is well suited for conditioning sensor signals in battery-powered applications. Figure

4 shows a two op-amp instrumentation amplifier, using the TP156xA op-amps.

The circuit works well for applications requiring rejection of Common Mode noise at higher gains. The reference

voltage (V_REF) is supplied by a low-impedance source. In single voltage supply applications, V_REFis typically

V_DD/2.

RG

R1

R2

R1

Vout

Vref

V2

R

2R

¹) V_REF

R₂R_G

1

V_OUT=(V V₂)(1



1

Figure 4

Gain-of-100 Amplifier Circuit

Figure 5 shows a Gain-of-100 amplifier circuit using two TP156xA op-amps. It draws 500 uA total current from

supply rail, and has a -3dB frequency at 100kHz.

Figure 6 shows the small signal frequency response of the circuit.

+0.9V

Vin

Vout

-0.9V

90.9K

10K

Figure 5: 100kHz, 500μA Gain-of-100 Amplifier

www.3peakic.com.cn

Rev. B.03

11

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Figure 6: Frequency response of 100kHz, 500uA Gain-of-100 Amplifier

Buffered Chemical Sensor (pH) Probe

The TP156xA op-amp has input bias current in the pA range. This is ideal in buffering high impedance chemical

sensors such as pH probe. As an example, the circuit in Figure 7 eliminates expansive low-leakage cables that

that is required to connect pH probe to metering ICs such as ADC, AFE and/or MCU. A TP156xA op-amp and a

lithium battery are housed in the probe assembly. A conventional low-cost coaxial cable can be used to carry

OPA‟s output signal to subsequent ICs for pH reading.

BATTERY

3V

(DURACELL

DL1620)

GENERAL PURPOSE

COMBINATION

pH PROBE

COAX

(CORNING 476540)

R1

10M

To

pH

PROBE

ADC/AFE/MCU

R2

10M

ALL COMPONENTS CONTAJNED WITHIN THE pH PROBE

Figure 7: Buffer pH Probe

Two-Pole Micro-power Sallen-Key Low-Pass Filter

Figure 8 shows a micro-power two-pole Sallen-Key Low-Pass Filter with 400Hz cut-off frequency. For best

results, the filter‟s cut-off frequency should be 8 to 10 times lower than the OPA‟s crossover frequency. Additional

OPA‟s phase margin shift can be avoided if the OPA‟s bandwidth-to-signal ratio is greater than 8. The design

equations for the 2-pole Sallen-Key low-pass filter are given below with component values selected to set a

400Hz low-pass filter cutoff frequency:

C1

400pF

Vin

Vout

R1

1MOhm

R2

1MOhm

C2

400pF

R₁= R₂= R = 1M

C₁= C₂= C = 400pF

R4

2MOhm

Q = Filter Peaking Factor = 1

f_-3dB= 1/(2  RC) = 400Hz

R3

2MOhm

R₃= R₄/(2-1/Q) ; with Q = 1, R₃=R₄

Figure 8

Rev. B.03

www.3peakic.com.cn

12

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Portable Gas Sensor Amplifier

Gas sensors are used in many different industrial and medical applications. Gas sensors generate a current that

is proportional to the percentage of a particular gas concentration sensed in an air sample. This output current

flows through a load resistor and the resultant voltage drop is amplified. Depending on the sensed gas and

sensitivity of the sensor, the output current can be in the range of tens of microamperes to a few milli-amperes.

Gas sensor datasheets often specify a recommended load resistor value or a range of load resistors from which

to choose.

There are two main applications for oxygen sensors – applications which sense oxygen when it is abundantly

present (that is, in air or near an oxygen tank) and those which detect traces of oxygen in parts-per-million

concentration. In medical applications, oxygen sensors are used when air quality or oxygen delivered to a patient

needs to be monitored. In fresh air, the concentration of oxygen is 20.9% and air samples containing less than 18%

oxygen are considered dangerous. In industrial applications, oxygen sensors are used to detect the absence of

oxygen; for example, vacuum-packaging of food products.

The circuit in Figure 9 illustrates a typical implementation used to amplify the output of an oxygen detector. With

the components shown in the figure, the circuit consumes less than 600μA of supply current ensuring that small

form-factor single- or button-cell batteries (exhibiting low mAh charge ratings) could last beyond the operating life

of the oxygen sensor. The precision specifications of these amplifiers, such as their low offset voltage, low TC-V_OS,

low input bias current, high CMRR, and high PSRR are other factors which make these amplifiers excellent

choices for this application.

10MOhm

1%

100KOhm

1%

Vout

Oxygen Sensor

City Technology

4OX2

100KOhm

1%

V_OUT1Vin Air ( 21% O₂)

I

100Ohm

1%

O₂

I_DD 0.7uA

Figure 9

www.3peakic.com.cn

Rev. B.03

13

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Package Outline Dimensions

SC70-5 /SOT-353

Dimensions

Dimensions In

Inches

In Millimeters

Symbol

Min

Max

Min

Max

A

0.900

0.000

0.900

0.150

0.080

2.000

1.150

2.150

0.650TYP

1.200

0.525REF

0.260

0°

1.100

0.100

1.000

0.350

0.150

2.200

1.350

2.450

0.035

0.000

0.035

0.006

0.003

0.079

0.045

0.085

0.026TYP

0.047

0.021REF

0.010

0°

0.043

0.004

0.039

0.014

0.006

0.087

0.053

0.096

A1

A2

b

C

D

E

E1

e

e1

L

1.400

0.055

L1

θ

0.460

8°

0.018

8°

SOT23-5 (SOT23-6)

Dimensions

Dimensions In

Inches

Symbol

In Millimeters

Min

Max

Min

Max

A

1.050

0.000

1.050

0.300

0.100

2.820

1.500

2.650

0.950TYP

1.800

0.700REF

0.300

0°

1.250

0.100

1.150

0.400

0.200

3.020

1.700

2.950

0.041

0.000

0.041

0.012

0.004

0.111

0.059

0.104

0.037TYP

0.071

0.028REF

0.012

0°

0.049

0.004

0.045

0.016

0.008

0.119

0.067

0.116

A1

A2

b

C

D

E

E1

e

e1

L

2.000

0.079

L1

θ

0.460

8°

0.024

8°

Rev. B.03

www.3peakic.com.cn

14

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Package Outline Dimensions

SO-8

Dimensions

Dimensions In

Inches

In Millimeters

Symbol

Min

Max

Min

Max

A

1.350

0.100

1.350

0.330

0.190

4.780

3.800

5.800

1.270TYP

0.400

0°

1.750

0.250

1.550

0.510

0.250

5.000

4.000

6.300

0.053

0.004

0.053

0.013

0.007

0.188

0.150

0.228

0.050TYP

0.016

0°

0.069

0.010

0.061

0.020

0.010

0.197

0.157

0.248

A1

A2

B

C

D

E

E1

e

L1

θ

1.270

8°

0.050

8°

MSOP-8

Dimensions

Dimensions In

Inches

In Millimeters

Symbol

Min

Max

Min

Max

A

0.800

0.000

0.760

0.30 TYP

0.15 TYP

2.900

0.65 TYP

2.900

4.700

0.410

0°

1.200

0.200

0.970

0.031

0.000

0.030

0.012 TYP

0.006 TYP

0.114

0.026

0.114

0.185

0.016

0°

0.047

0.008

0.038

A1

A2

b

C

D

3.100

0.122

e

E

3.100

5.100

0.650

6°

0.122

0.201

0.026

6°

E1

L1

θ

www.3peakic.com.cn

Rev. B.03

15

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Package Outline Dimensions

TSSOP-8

Symbol

Dimensions In Millimeters

Min Max

3.100

Dimensions In Inches

Min Max

0.122

D

E

2.900

4.300

0.190

0.090

6.250

0.114

0.169

0.007

0.004

0.246

4.500

0.300

0.200

6.550

1.200

1.000

0.150

0.177

0.012

0.008

0.258

0.047

0.039

0.006

b

c

E1

A

A2

A1

e

0.800

0.050

0.031

0.002

0.65(BSC)

0.500

0.026（BSC）

0.020

L

0.700

7°

0.028

7°

H

θ

0.25(BSC)

1°

0.01（BSC）

1°

Rev. B.03

www.3peakic.com.cn

16

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Package Outline Dimensions

SO-14

Dimensions

In Millimeters

Symbol

MIN

NOM

1.60

0.15

1.45

0.65

MAX

A

1.35

0.10

1.25

0.55

0.36

0.35

0.16

0.15

8.53

5.80

3.80

1.75

0.25

1.65

0.75

0.49

0.45

0.25

8.73

6.20

4.00

A1

A2

A3

b

b1

c

0.40

c1

D

0.20

8.63

E

6.00

E1

e

3.90

1.27 BSC

0.60

L

0.45

0.80

L1

L2

R

1.04 REF

0.25 BSC

0.07

0.30

0°

R1

h

0.40

0.50

8°

θ

θ1

θ2

θ3

θ4

6°

8°

7°

10°

9°

6°

5°

9°

www.3peakic.com.cn

Rev. B.03

17

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Package Outline Dimensions

TSSOP-14

Dimensions

Symbol

In Millimeters

MIN

NOM

MAX

A

-

1.20

0.15

1.05

0.54

0.28

0.24

0.19

0.15

5.06

6.60

4.50

A1

A2

A3

b

0.05

0.90

0.34

0.20

0.10

4.86

6.20

4.30

1.00

0.44

-

b1

c

0.22

-

c1

D

0.13

4.96

6.40

4.40

0.65 BSC

0.60

E

E1

e

L

0.45

0.75

L1

L2

R

1.00 REF

0.25 BSC

0.09

-

R1

s

0.09

-

0.20

-

θ1

θ2

θ3

0°

-

8°

10°

12°

14°

10°

Rev. B.03

www.3peakic.com.cn

18

TP1561A/ TP1561NA/TP1562A/TP1564A

Stable 6MHz, 500μA, RRIO, Precision Op Amps

Tape and Reel Information

All dimensions are nominal, unit is mm

Order Number

Package

D1

W1

A0

B0

K0

P0

W0

Pin1

Quadrant

Q3

TP1561A-TR

TP1561NA-TR

TP1562A-SR

TP1562A-VR

TP1562A-TR

TP1564A-SR

TP1564A-TR

5-Pin SOT23

6-Pin SOT23

8-Pin SOIC

180.0

330.0

13.1

17.6

21.6

17.6

3.2

6.4

5.2

6.8

6.5

6.8

3.2

5.4

3.3

9.0

5.4

1.4

2.1

1.5

1.2

2.1

1.2

4.0

8.0

Q3

12.0

16.0

12.0

Q1

8-Pin MSOP

8-Pin TSSOP

14-Pin SOIC

Q1

14-Pin TSSOP 330.0

Q1

www.3peakic.com.cn

Rev. B.03

19


型号：	TP1562A-SR
厂家：	3PEAK
描述：	Stable 6MHz, 500Î¼A, RRIO, Precision, Op Amps
文件：	总19页 (文件大小：1743K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TP1562A-SR [3PEAK]

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