Component - PSoC 4 Opamp V1.10

®
PSoC Creator™ Component Datasheet
PSoC 4 Operational Amplifier (Opamp)
1.10
Features
 Follower or Opamp configuration
 Rail-to-rail inputs and output
 Output direct low resistance connection to pin
 1mA or 10mA output current
 Internal connection for follower
General Description
The Opamp operates as an off-the-shelf operation amplifier. A direct connection is made
between the Opamp output to a GPIO pin for a low output resistance. Two output modes
(Internal only and Output to pin) are provided to drive internal or external signals respectively.
The Output to pin may drive both internal (SAR component) and external signals. The user also
has control of different overall power levels that provide a tradeoff between power and
bandwidth.
For PSoC 4200 BLE devices the Comparator can operate in the Deep Sleep power mode.
Note External resistors are required to perform amplification.
When to Use the Opamp
The following is a list of common use cases for the Opamp component:




Gain for SAR ADC
High impedance buffer for SAR ADC
General purpose signal amplifier
Active filter
Cypress Semiconductor Corporation
Document Number: 001-92541 Rev. *C
•
198 Champion Court
•
San Jose, CA 95134-1709
• 408-943-2600
Revised May 8, 2015
PSoC 4 Operational Amplifier (Opamp)
®
PSoC Creator™ Component Datasheet
Input/Output Connections
This section describes various input and output connections for the Opamp.
Positive Input – Analog Input
When the Opamp is configured in follower Mode, this I/O is the voltage input. If the Opamp is
configured in Opamp Mode, this I/O acts as the standard Opamp noninverting input.
Negative Input – Analog Input*
When the Opamp component is configured in Opamp Mode, this I/O is the normal inverting
input. When the Opamp is configured in Follower Mode, this I/O is hard-connected to the output
and the I/O is unavailable.
Vout – Analog output
The output can be directly connected to a pin and/or routed to an internal load using the Output
parameter. The drive strength is selectable as either Output to pin or Internal only. Connections
to pins require the Output to pin setting. Internal connections can operate with either the Internal
only or Output to pin setting, but should normally be configured for Internal only.
Component Parameters
Drag Opamp onto your design and double-click it to open the Configure dialog.
The Opamp provides the following parameters:
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Document Number: 001-92541 Rev. *C
®
PSoC Creator™ Component Datasheet
PSoC 4 Operational Amplifier (Opamp)
Mode
This parameter allows you to select between two configurations: Opamp and Follower. Opamp
is the default configuration. In this mode, all three terminals are available for connection. In the
follower mode, the inverting input is internally connected to the output to create a voltage
follower.
Power/Bandwidth
The Opamp works over a wide range of operating currents. Higher operating current increases
the Opamp bandwidth. The Power/Bandwidth parameter allows you to select the power level:
High, Medium, and Low.
Output
This parameter selects an output mode: Internal only – internal connections or Output to pin –
connection to pin (external).
Compensation
The opamp offers three compensation settings: Low, Med and High. This allows reducing the
compensation (hence increase the bandwidth) when the Opamp’s loop gain is reduced.
Deep sleep operation
This parameter is available for PSoC 4200 BLE devices only. It enables the component
operation in Deep Sleep mode. If this option is enabled, a “DSOp” label will be displayed under
the symbol.
Note Only dedicated pins may be used for operation in Deep Sleep mode.
Note For correct operation in Deep Sleep mode, the VDDA must be larger than 2.5 V. The boost
pump does not operate in Deep Sleep mode.
Document Number: 001-92541 Rev. *C
Page 3 of 13
PSoC 4 Operational Amplifier (Opamp)
®
PSoC Creator™ Component Datasheet
Application Programming Interface
Application Programming Interface (API) routines allow you to configure the component using
software. The following table lists and describes the interface to each function. The subsequent
sections cover each function in more detail.
By default, PSoC Creator assigns the instance name "Opamp_1" to the first instance of a
component in a given design. You can rename it to any unique value that follows the syntactic
rules for identifiers. The instance name becomes the prefix of every global function name,
variable, and constant symbol. For readability, the instance name used in the following table is
"Opamp"
Functions
Function
Description
Opamp_Start()
Performs all of the required initialization for the component and enables power
to the block.
Opamp_Stop()
Turns off the Opamp block.
Opamp_Init()
Initializes or restores the component according to the customizer Configure
dialog settings.
Opamp_Enable()
Activates the hardware and begins component operation.
Opamp_SetPower()
Sets the drive power to one of three settings; LOW_POWER, MED_POWER,
HIGH_POWER.
Opamp_PumpControl()
Turn the boost pump on or off.
Opamp_Sleep()
This is the preferred API to prepare the component for sleep.
Opamp_Wakeup()
This is the preferred API to restore the component to the state when
Opamp_Sleep() was called.
void Opamp_Start(void)
Description:
Performs all of the required initialization for the component and enables power to the block.
The first time the routine is executed, the Power level, Mode, and Output mode is set. When
called to restart the Opamp following a Stop() call, the current component parameter settings
are retained.
Parameters:
None
Return Value:
None
Side Effects:
None
Page 4 of 13
Document Number: 001-92541 Rev. *C
®
PSoC Creator™ Component Datasheet
PSoC 4 Operational Amplifier (Opamp)
void Opamp_Stop(void)
Description:
Turn off the Opamp block.
Parameters:
None
Return Value:
None
Side Effects:
Does not affect the Opamp mode or power settings
void Opamp_Init(void)
Description:
Initializes or restores the component according to the customizer Configure dialog settings. It
is not necessary to call Init() because the Start() API calls this function and is the preferred
method to begin the component operation.
Parameters:
None
Return Value:
None
Side Effects:
All the registers will be set to values according to the customizer Configure dialog.
void Opamp_Enable(void)
Description:
Activates the hardware and begins the component operation. It is not necessary to call
Enable() because the Start() API calls this function, which is the preferred method to begin
component operation.
Parameters:
None
Return Value:
None
Side Effects:
None
void Opamp_SetPower(uint32 power)
Description:
Sets the opamp to one of three power levels..
Parameters:
(uint32) power: Power levels. See table below.
Parameter Value
Return Value:
Description
Opamp_LOW_POWER
Lowest active power.
Opamp_MED_POWER
Medium power.
Opamp_HIGH_POWER
Highest active power.
None
Document Number: 001-92541 Rev. *C
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®
PSoC 4 Operational Amplifier (Opamp)
PSoC Creator™ Component Datasheet
void Opamp_PumpControl(uint32 onOff)
Description:
Allows the user to turn the Opamp’s boost pump on or off. By Default the Opamp_Start()
function turns on the pump. Use this command to turn it off. The boost must be turned on
when the supply is less than 2.7 volts and off if the supply is more than 4 volts.
Parameters:
(uint32) onOff: Control the pump. See the table below.
Parameter Value
Description
Opamp_PUMP_OFF
Turn off the pump
Opamp_PUMP_ON
Turn on the pump
Return Value:
None
Side Effects:
Turning this pump off will reduce the Opamp input range by 1.8 volts or (Vssa to (Vdda – 1.8
volts)).
void Opamp_Sleep(void)
Description:
This is the preferred API to prepare the component for sleep. The Sleep() API saves the
current component state. Call the Sleep() function before calling the CySysPmDeepSleep()
or the CySysPmHibernate() functions. The "Deep sleep operation" option has an influence
on this function implementation.
Parameters:
None
Return Value:
None
Side Effects:
None
void Opamp_Wakeup(void)
Description:
This is the preferred API to restore the component to the state when Sleep() is called. If the
component has been enabled before the Sleep() function is called, the Wakeup() function
will also re-enable the component. The "Deep sleep operation" option has an influence on
this function implementation.
Parameters:
None
Return Value:
None
Side Effects:
Calling the Wakeup() function without first calling the Sleep() function may produce
unexpected behavior.
Page 6 of 13
Document Number: 001-92541 Rev. *C
®
PSoC Creator™ Component Datasheet
PSoC 4 Operational Amplifier (Opamp)
Sample Firmware Source Code
PSoC Creator provides numerous example projects that include schematics and example code
in the Find Example Project dialog. For component-specific examples, open the dialog from the
Component Catalog or an instance of the component in a schematic. For general examples,
open the dialog from the Start Page or File menu. As needed, use the Filter Options in the
dialog to narrow the list of projects available to select.
Refer to the "Find Example Project" topic in the PSoC Creator Help for more information.
MISRA Compliance
This section describes the MISRA-C:2004 compliance and deviations for the component. There
are two types of deviations defined:


project deviations – deviations that are applicable for all PSoC Creator components
specific deviations – deviations that are applicable only for this component
This section provides information on the component-specific deviations. The project deviations
are described in the MISRA Compliance section of the System Reference Guide along with
information on the MISRA compliance verification environment.
The Opamp component has the following specific deviations:
MISRA-C:
2004 Rule
Rule Class
(Required/Advisory)
19.7
A
Rule Description
Description of Deviation(s)
A function is used in preference
to a function-like macro.
Deviated since function-like macros
are used to allow more efficient code.
API Memory Usage
The component memory usage varies significantly, depending on the compiler, device, number
of APIs used and component configuration. The following table provides the memory usage for
all APIs available in the given component configuration.
The measurements have been done with the associated compiler configured in the Release
mode with an optimization set for Size. For a specific design, the map file generated by the
compiler can be analyzed to determine the memory usage.
PSoC 4 (GCC)
Configuration
Deep sleep operation
Flash Bytes
SRAM Bytes
Disabled
240
9
Enabled
188
8
Document Number: 001-92541 Rev. *C
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®
PSoC 4 Operational Amplifier (Opamp)
PSoC Creator™ Component Datasheet
Functional Description
This component is a basic operational amplifier. You may configure power, output strength, and
interconnect the Opamp to other components. Low resistive connections are made from the
Opamp to three selected pins to provide the optimal performance.
Using of the Compensation option
There are recommended settings for the Compensation option:
Load Capacitance
Loop Gain
Less than 50 pF
50pF to 125 pF
1-6
Medium
High
7 or more
Low
Medium
These settings are applicable for the Output to pin setting, which is capable to drive a pin. 125
pF is the maximum load capacitance for this output.
Block Diagram and Configuration
The component uses cy_psoc4_abuf primitive.
Placement
Each Opamp is directly connected to specific GPIOs along with being connected to the internal
fabric. The Output connection to a GPIO requires the use of the directly connected pin. Refer to
the device datasheet for the part being used for the specific physical pin connections.
Registers
See the chip Technical Reference Manual (TRM) for more information about the registers.
Page 8 of 13
Document Number: 001-92541 Rev. *C
®
PSoC Creator™ Component Datasheet
PSoC 4 Operational Amplifier (Opamp)
Component Debug Window
PSoC Creator allows viewing debug information about the components in the design. Each
component window lists the memory and registers for the instance. For detailed hardware
registers descriptions, refer to the appropriate device technical reference manual. For detailed
UDB registers descriptions used in the component, refer to the Registers section of this
datasheet.
To open the Component Debug window:
1. Make sure the debugger is running or in break mode.
2. Choose Windows > Components… from the Debug menu.
3. In the Component Window Selector dialog, select the component instances to view and
click OK.
The selected Component Debug window(s) will open within the debugger framework. Refer to
the "Component Debug Window" topic in the PSoC Creator Help for more information.
Resources
The Opamp uses one of the opamp (Constant Time Block – mini (CTBm)) blocks in PSoC 4. No
other resources are required.
DC and AC Electrical Characteristics
Specifications are valid for –40 °C ≤ TA ≤ 85 °C and TJ ≤ 100 °C, except where noted.
Specifications are valid for 1.71 V to 5.5 V, except where noted.
DC Specifications
Parameter
Description
Conditions
Min
Typ
Max
Units
IDD
Opamp Block current. No load.
–
–
–
–
IDD_HI
Power = high
–
1000
1300
µA
IDD_MED
Power = medium
–
320
500
µA
IDD_LOW
Power = low
–
250
350
µA
IDD
Opamp Block current. VDD = 1.8 V.
No load.
For PSoC 4200 BLE family
–
–
–
–
IDD_HI
Power = high
For PSoC 4200 BLE family
–
1000
1300
µA
IDD_MED
Power = medium
For PSoC 4200 BLE family
–
500
–
µA
IDD_LOW
Power = low
For PSoC 4200 BLE family
–
250
350
µA
IDD_HI
Power = high
For PSoC 4100M/
PSoC 4200M
–
1100
1850
µA
Document Number: 001-92541 Rev. *C
Page 9 of 13
®
PSoC 4 Operational Amplifier (Opamp)
Parameter
Description
PSoC Creator™ Component Datasheet
Conditions
Min
Typ
Max
Units
IDD_MED
Power = medium
For PSoC 4100M/
PSoC 4200M
–
550
950
µA
IDD_LOW
Power = low
For PSoC 4100M/
PSoC 4200M
–
150
350
µA
IOUT_MAX
VDDA ≥ 2.7 V, 500 mV from rail
–
–
–
–
IOUT_MAX_HI
Power = high
10
–
–
mA
IOUT_MAX_MID
Power = medium
10
–
–
mA
IOUT_MAX_LO
Power = low
–
5
–
mA
IOUT
VDDA = 1.71 V, 500 mV from rail
–
–
–
–
IOUT_MAX_HI
Power = high
4
–
–
mA
IOUT_MAX_MID
Power = medium
4
–
–
mA
IOUT_MAX_LO
Power = low
–
2
–
mA
VIN
Charge pump on, VDDA ≥ 2.7 V
–0.05
–
VDDA – 0.2
V
VCM
Charge pump on, VDDA ≥ 2.7 V
–0.05
–
VDDA – 0.2
V
VOUT
VDDA ≥ 2.7 V
–
–
–
VOUT_1
Power = high, ILOAD=10 mA
0.5
–
VDDA – 0.5
V
VOUT_2
Power = high, ILOAD=1 mA
0.2
–
VDDA – 0.2
V
VOUT_3
Power = medium, ILOAD=1 mA
0.2
–
VDDA – 0.2
V
VOUT_4
Power = low, ILOAD=0.1mA
0.2
–
VDDA – 0.2
V
VOS
Offset voltage
High mode
1
±0.5
1
mV
VOS
Offset voltage
Medium mode
–
±1
–
mV
VOS
Offset voltage
Low mode
–
±2
–
mV
VOS_DR
Offset voltage drift
High mode
–10
±3
10
µV/C
VOS_DR
Offset voltage drift
Medium mode
–
±10
–
µV/C
VOS_DR
Offset voltage drift
Low mode
–
±10
–
µV/C
CMRR
DC
VDDD = 3.6 V
70
80
–
dB
CMRR
DC
For PSoC 4200 BLE family
65
70
–
dB
60
70
–
dB
70
85
–
dB
VDDD = 3.6 V, HighPower Mode
CMRR
PSRR
Page 10 of 13
DC Common mode rejection ratio.
High Power mode. Common Model
Voltage Range from 0.5V to VDDA 0.5V.
At 1 kHz, 100 mV ripple
For PSoC 4100M/
PSoC 4200M
VDDD = 3.6 V
VDDD = 3.6 V
Document Number: 001-92541 Rev. *C
®
PSoC Creator™ Component Datasheet
PSoC 4 Operational Amplifier (Opamp)
AC Specifications
Parameter
Description
Conditions
Min
Typ
Max
Units
GBW
Load = 20 pF, 0.1 mA. VDDA =
2.7 V
–
–
–
–
GBW_HI
Power = high
6
–
–
MHz
GBW_MED
Power = medium
4
–
–
MHz
GBW_LO
Power = low
2
–
–
MHz
GBW_LO
Power = low
–
1
–
MHz
–
–
–
–
For PSoC 4200 BLE family,
PSoC 4100M/PSoC 4200M
Noise
VN1
Input referred, 1 Hz - 1GHz,
power = high
–
94
–
µVrms
VN2
Input referred, 1 kHz, power =
high
–
72
–
nV/rtHz
VN3
Input referred, 10kHz, power =
high
–
28
–
nV/rtHz
VN4
Input referred, 100kHz, power =
high
–
15
–
nV/rtHz
CLOAD
Stable up to maximum load.
Performance specs at 50 pF.
–
–
125
pF
Slew_rate
Cload = 50 pF, Power = High,
VDDA ≥ 2.7 V
6
–
–
V/µsec
T_op_wake
From disable to enable, no
external RC dominating
–
300
–
µSec
T_op_wake
From disable to enable, no
external RC dominating
–
25
–
µSec
PSoC 4100M/PSoC 4200M
Deep-Sleep Mode (For PSoC 4200 BLE family; only guaranteed for VDDA > 2.5 V)
GBW_DS
Gain bandwidth product
–
50
–
kHz
IDD_DS
Current
–
15
–
μA
Vos_DS
Offset voltage
–
5
–
mV
Vos_dr_DS
Offset voltage drift
–
20
–
μV/°C
Vout_DS
Output voltage
0.2
–
VDD–0.2
V
Vcm_DS
Common mode voltage
0.2
–
VDD–1.8
V
Deep-Sleep Mode (For PSoC 4100M/PSoC 4200M; only guaranteed for VDDA ≥ 2.7 V)
Mode 2 is lowest current range. Mode 1 has higher GBW.
IDD_HI_M1
Mode 1, High current
25 °C
-
1400
uA
IDD_MED_M1
Mode 1, Medium current
25 °C
-
700
uA
IDD_LOW_M1
Mode 1, Low current
25 °C
-
200
uA
IDD_HI_M2
Mode 2, High current
25 °C
-
120
uA
Document Number: 001-92541 Rev. *C
Page 11 of 13
®
PSoC 4 Operational Amplifier (Opamp)
Parameter
PSoC Creator™ Component Datasheet
Description
Conditions
Min
Typ
Max
IDD_MED_M2
Mode 2, Medium current
25 °C
-
60
uA
IDD_LOW_M2
Mode 2, Low current
25 °C
-
15
uA
GBW_HI_M1
Mode 1, High current
20-pF load, no DC load 0.2 V to
VDDA-1.5 V
-
4
MHz
GBW_MED_M1
Mode 1, Medium current
20-pF load, no DC load 0.2 V to
VDDA-1.5 V
-
2
MHz
GBW_LOW_M1
Mode 1, Low current
20-pF load, no DC load 0.2 V to
VDDA-1.5 V
-
0.5
MHz
GBW_HI_M2
Mode 2, High current
20-pF load, no DC load 0.2 V to
VDDA-1.5 V
-
0.5
MHz
GBW_MED_M2
Mode 2, Medium current
20-pF load, no DC load 0.2 V to
VDDA-1.5 V
-
0.2
MHz
GBW_LOW_M2
Mode 2, Low current
20-pF load, no DC load 0.2 V to
VDDA-1.5 V
-
0.1
MHz
VOS_HI_M1
Mode 1, High current
With trim 25 °C, 0.2 V to VDDA1.5 V
-
5
mV
VOS_MED_M1
Mode 1, Medium current
With trim 25 °C, 0.2 V to VDDA1.5 V
-
5
mV
VOS_LOW_M2
Mode 1, Low current
With trim 25 °C, 0.2 V to VDDA1.5 V
-
5
mV
VOS_HI_M2
Mode 2, High current
With trim 25 °C, 0.2 V to VDDA1.5 V
-
5
mV
VOS_MED_M2
Mode 2, Medium current
With trim 25 °C, 0.2 V to VDDA1.5 V
-
5
mV
VOS_LOW_M2
Mode 2, Low current
With trim 25 °C, 0.2 V to VDDA1.5 V
-
5
mV
IOUT_HI_M!
Mode 1, High current
Output is 0.5 V to VDDA-0.5 V
-
10
mV
IOUT_MED_M1
Mode 1, Medium current
Output is 0.5 V to VDDA-0.5 V
-
10
mV
IOUT_LOW_M1
Mode 1, Low current
Output is 0.5 V to VDDA-0.5 V
-
4
mV
IOUT_HI_M2
Mode 2, High current
Output is 0.5 V to VDDA-0.5 V
-
1
mV
IOU_MED_M2
Mode 2, Medium current
Output is 0.5 V to VDDA-0.5 V
-
1
mV
IOU_LOW_M2
Mode 2, Low current
Output is 0.5 V to VDDA-0.5 V
-
0.5
mV
Page 12 of 13
Units
Document Number: 001-92541 Rev. *C
®
PSoC Creator™ Component Datasheet
PSoC 4 Operational Amplifier (Opamp)
Component Changes
This section lists the major changes in the component from the previous version.
Version
Description of Changes
Reason for Changes / Impact
Updated Offset voltage and Offset voltage drift
parameter names into DC Specifications table.
1.10.c
Edited the datasheet.
1.10.b
Edited the datasheet.
Added CMRR parameter values for
PSoC 4200 BLE devices.
1.10.a
Edited the datasheet.
Added information that for correct operation in
deep sleep mode, VDDA must be larger than
2.5 V.
Added the Deep sleep operation parameter to
control component availability in Deep Sleep mode.
Updated API Memory usage and MISRA
compliance sections.
1.10
Updated DC and AC Electrical Characteristics
section with PSoC 4100M/ PSoC 4200M data.
Updates to support PSoC 4200 BLE devices.
Removed references to SaveConfig() and
RestoreConfig() APIs because they are empty.
Changed output mode parameters from “1mA” and
“10mA” to “Internal only” and “Output to pin”
respectively.
1.0.a
Updated datasheet.
1.0
First release
Corrected specs to match device datasheet.
© Cypress Semiconductor Corporation, 2015. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of
any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used
for medical, life support, life saving, critical control, or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for
use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in lifesupport systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
PSoC® is a registered trademark, and PSoC Creator™ and Programmable System-on-Chip™ are trademarks of Cypress Semiconductor Corp. All other trademarks or registered trademarks
referenced herein are property of the respective corporations.
Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and
foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create
derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in
conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as
specified above is prohibited without the express written permission of Cypress.
Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein.
Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in lifesupport systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application
implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Use may be limited by and subject to the applicable Cypress software license agreement.
Document Number: 001-92541 Rev. *C
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