LMP92001SQE/NOPB National Semiconductor, LMP92001SQE/NOPB Datasheet

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LMP92001SQE/NOPB

Manufacturer Part Number
LMP92001SQE/NOPB
Description
IC ANALOG MONITOR/CTLR 54LLP
Manufacturer
National Semiconductor
Datasheet

Specifications of LMP92001SQE/NOPB

Applications
General Purpose
Current - Supply
4mA
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
54-WFQFN Exposed Pad
Operating Temperature (min)
-40C
Operating Temperature Classification
Automotive
Operating Temperature (max)
125C
Package Type
LLP EP
Rad Hardened
No
Supply Voltage Range
4.75V To 5.5V
Operating Temperature Range
-40°C To +125°C
Digital Ic Case Style
LLP
No. Of Pins
54
Peak Reflow Compatible (260 C)
Yes
Leaded Process Compatible
Yes
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LMP92001SQE/NOPBTR
© 2011 National Semiconductor Corporation
Analog System Monitor and Controller
1.0 General Description
The LMP92001 is a complete analog monitoring and control
circuit which includes a sixteen channel 12-bit Analog to Dig-
ital Converter (ADC), twelve 12-bit Digital to Analog Convert-
ers (DACs), an internal reference, an internal temp sensor,
an 8-bit GPIO port, and an I
The ADC can be used to monitor rail voltages, current sense
amplifier outputs or sensors and includes a programmable
window comparator function on six of its 16 channels to detect
out-of range conditions.
The DACs can be used to control PA bias points, actuators,
potentiometers, etc. When required, the outputs can be in-
stantaneously driven to either supply rail using the output
switches and the asynchronous DAC control inputs.
Both ADC and DACs can use either the internal 4.5V refer-
ence or an external reference independently.
The built-in temperature sensor is treated as the 17th analog
sense input. In addition, the 8-bit GPIO port allows for the
resources of the microcontroller to be further extended, pro-
viding even more flexibility.
The LMP92001 is available in a space saving 10mmx5.5mm
LLP 54-pin package and is operational over the full − 40°C to
125°C temperature range.
2.0 Features
16 Analog Voltage Monitoring Channels
4.0 Block Diagram
National Semiconductor® is a registered trademark of National Semiconductor Corporation.
12-bit ADC with programmable input MUX
No Missing Codes
Total Unadjusted Error (TUE) ±0.1%
Single-Shot or Continuous Conversion Modes
2
C-compatible interface.
301327
LMP92001
12 Programmable Analog Voltage Outputs
Voltage Reference
Analog Temperature Sensor
8-bit GPIO Port
I
LLP-54 package (10 x 5.5 mm, 0.5 mm pitch)
3.0 Applications
2
C-Compatible Bus
Programmable window comparator function
Interrupt signal generation for input out-of-bound condition
Twelve 12-bit DACs
Guaranteed Monotonic
Settling Time 8.5 µs
Simultaneous update of all channels to same value
Asynchronous output control forces rail voltage at output
User-selectable source: External or Internal
Internal Reference 4.5V ±0.7%
Readable via ADC channel 17
Temperature Error ±2°C
Each bit individually programmable
Supports Standard and Fast Modes
Bus TIMEOUT function
Supports Block data transfers
RF PA Bias Monitoring and Control
System Monitoring and Control
Industrial Monitoring and Control
Test Equipment and Instrumentation
PRELIMINARY
February 11, 2011
30132736
www.national.com

Related parts for LMP92001SQE/NOPB

LMP92001SQE/NOPB Summary of contents

Page 1

... No Missing Codes ■ Total Unadjusted Error (TUE) ±0.1% ■ Single-Shot or Continuous Conversion Modes 4.0 Block Diagram National Semiconductor® registered trademark of National Semiconductor Corporation. © 2011 National Semiconductor Corporation LMP92001 ■ Programmable window comparator function ■ Interrupt signal generation for input out-of-bound condition 12 Programmable Analog Voltage Outputs ■ ...

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Typical Application www.national.com 2 30132706 ...

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Overview The LMP92001 has a flexible, feature-rich functionality which makes it ideally suited for many analog monitoring and control applications, for example base-station PA subsystems. This device provides the analog interface between a pro- grammable supervisor, such as a ...

Page 4

Connection Diagram www.national.com LLP-54 (SQA54AB) Top View 4 30132708 ...

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Pin Descriptions Name Pin VDD 14, 50 GND 4, 13, 41, 45 IN1 5 IN2 6 IN3 7 IN4 8 IN5 9 IN6 10 IN7 11 IN8 12 IN9 40 IN10 39 IN11 38 IN12 37 IN13 36 IN14 ...

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Name Pin C[1:4] 27:30 GPIO[0:7] 15:22 INT[1:2] 25:26 AREF 49 DREF 51 9.0 Ordering Information Order Number LMP92001SQE LMP92001SQX www.national.com ESD Structures NS Package Number SQA54AB SQA54AB 6 Function Asynchronous DAC output control digital inputs Digital I/O. CMOS Input or ...

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General Description ......................................................................................................................... 1 2.0 Features ........................................................................................................................................ 1 3.0 Applications .................................................................................................................................... 1 4.0 Block Diagram ................................................................................................................................ 1 5.0 Typical Application ........................................................................................................................... 2 6.0 Overview ........................................................................................................................................ 3 6.1 17-CHANNEL ANALOG SENSE WITH 12-BIT ADC ...................................................................... 3 6.2 PROGRAMMABLE ANALOG CONTROL ...

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GENERAL PURPOSE I/O ..................................................................................................... 28 16.6 SERIAL INTERFACE ............................................................................................................ 28 16.6 C-Compatible Protocol .............................................................................................. 29 16.6.2 Device Address .......................................................................................................... 30 16.6.3 Block Access ............................................................................................................. 31 16.6 C-Compatible Bus Reset ........................................................................................... 31 17.0 Application Circuit Example ...

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... Absolute Maximum Ratings 1, Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. VDD Relative to GND Voltage between any 2 pins(Note 3) Current in or out of any pin (Note 3) Current through VDD or GND Junction Temperature ...

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Symbol Parameter ZCO Zero Code Output FSO Full Scale Output at code 4095 Output Short Circuit Current I OS (Source) (Note 5) Output Short Circuit Current I OS (Sink) (Note 5) Continuous Output Current per I O Channel (to prevent ...

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Symbol Parameter DIGITAL INPUT CHARACTERISTICS (SDA and SCL) V Input HIGH Voltage IH V Input LOW Voltage IL Hysteresis I Digital Input Current IND C Input Capacitance IND DIGITAL OUTPUT CHARACTERISTICS (INT and GPIO) V Output LOW Voltage OL V ...

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Note 1: Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond ...

Page 13

Typical Performance Characteristics ADC: DNL VDD = 5V, AREF = 4.5V, T CREF.AEXT = 1, Single Channel Continuous Mode 1024 CODE DAC: DNL VDD = 5V, DREF = 4.5V, T CREF.DEXT = 1, ...

Page 14

ADC: DNL vs. Temperature VDD = 5V, AREF = 4.5V, CREF.AEXT = 1 2 Minimum DNL Maximum DNL -50 - TEMPERATURE (°C) DAC: DNL vs Temperature VDD = 5V, DREF = 4.5V, CREF.DEXT = ...

Page 15

Internal Reference Output Temperature Drift VDD = 5V, CREF.AEXT = 0, CREF.DEXT = 0 4.505 AREF DREF 4.504 4.503 4.502 4.501 4.500 4.499 4.498 4.497 4.496 4.495 -50 - 100 125 TEMPERATURE (°C) 30132759 15 www.national.com ...

Page 16

Register Set RESERVED registers in the map in TER MAP should not be accessed for either read or write operations as this may lead to unpredictable behavior of the device. 15.1 REGISTER MAP Addr. Name 0x00 0x01 TEST 0x02 ...

Page 17

Addr. Name 0x43 LIH9 0x44 LIH10 0x45 LIH11 0x46 LIL1 0x47 LIL2 0x48 LIL3 0x49 LIL9 0x4A LIL10 0x4B LIL11 0x66 CREF 0x80 DAC1 0x81 DAC2 0x82 DAC3 0x83 DAC4 0x84 DAC5 0x85 DAC6 0x86 DAC7 0x87 DAC8 0x88 DAC9 ...

Page 18

STATUS REGISTERS 15.3.1 General Status Register: SGEN[7:0], default = 0x40 Bx Name Function 7 BUSY 1 - while ADC is converting 6 RDYN 0 - when power up completed 5:3 - RESERVED any bit ...

Page 19

CONTROL REGISTERS 15.4.1 General Configuration Register: CGEN[7:0], default = 0x00 Bx Name Function 1 - RESETS all registers and self to 7 RST POR value 6:3 - RESERVED 1 - disable I 2 C-compatible TIMEOUT. 2 TOD See Section ...

Page 20

ADC One-Shot Conversion Trigger Register : CTRIG[7:0], default = 0x00 Bx Name Function 7:1 - RESERVED Writing any value, when CGEN.STRT=0, will trigger Single-Shot conversion. The 0 SNGL CGEN.LCK bit must be set for the conversion sequence to begin. ...

Page 21

BLOCK COMMANDS Block access functionality is discussed in Block Access. Block Start Block End Name Address Address BLK0 0x80 BLK1 0x86 BLK2 0x20 BLK3 0x28 BLK4 0x40 BLK5 0x46 Section 16.6.3 Block Length in Bytes 0x8B 24 Single command ...

Page 22

Application Information 16.1 ANALOG SENSE SUBSYSTEM The device is capable of monitoring externally ap- plied voltages and an internal analog temperature sensor. The system is centered around 12-bit SAR ADC fronted by a 17-input mux. Results ...

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FIGURE 2. ADC Finite State Machine Diagram 23 30132710 www.national.com ...

Page 24

Reference By default the ADC operates from the external reference volt- age applied at AREF pin of the device. Due to the architecture of the ADC the DC current flowing into the AREF input is zero during conversion. However, ...

Page 25

Interrupt Subsystem Device outputs INT1 and INT2 report out of bounds conditions as determined by the digital window comparator. INT1 and INT2 are open collector outputs and are active LO. INT1 re- ports out of bound conditions at ADC ...

Page 26

Typical DAC core output VOUTx as a function of the DACx input , x=1...12, can be expressed as: 16.2.2 Reference By default the DACs operate from the external reference volt- age applied at the DREF pin of the device. Given ...

Page 27

Note that CDAC.OFF affects all OUTx, whereas Cy affects only channels assigned to it. The correspondence between Device Pin 16.3 TEMPERATURE SENSOR The output voltage of the analog temperature sensor can be sampled via ADC ...

Page 28

GENERAL PURPOSE I/O The GPIO[7:0] port is memory mapped to registers SGPI and CGPO. Both registers are accessible through the I patible interface. The SGPI register content reflects at all times the digital state at the GPIOx device pins. ...

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I 2 C-Compatible Protocol Two wires, SCL and SDA, are used to carry data between master (the digital supervisor), and a slave (LMP92001). Mas- ter generates a START condition which commences all data transfers. And only the master generates ...

Page 30

Device Address Interface Address of the device can be set via 2 pins: AS0 and AS1. Each address setting pin recognizes 3 levels: Device Pins AS1 AS0 LOW LOW LOW MID LOW HIGH MID LOW MID MID MID HIGH ...

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Block Access Block Access functionality minimizes overhead in bus trans- fers involving larger data sets (more than 2 bytes). Internal register addresses 0xF0 through 0xF5 are interpreted by the interface as block commands. Accessing any of these ad- dresses ...

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Application Circuit Example www.national.com 32 30132742 ...

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Physical Dimensions inches (millimeters) unless otherwise noted LLP-54 Package NS Package Number SQA54A 33 www.national.com ...

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