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부품번호 | MAX11358B 기능 |
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기능 | 16-Bit Data-Acquisition System | ||
제조업체 | Maxim Integrated | ||
로고 | |||
전체 30 페이지수
19-5027; Rev 0; 12/09
16-Bit Data-Acquisition System with ADC, DAC,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
General Description
The MAX11358B smart data-acquisition system (DAS) is
based on a 16-bit, sigma-delta analog-to-digital converter
(ADC) and system-support functionality for a micro-
processor (µP)-based system. These devices integrate
an ADC, DACs, operational amplifiers, internal selec-
table-voltage reference, temperature sensors, analog
switches, a 32kHz oscillator, a real-time clock (RTC)
with alarm, a high-frequency-locked loop (FLL) clock,
four user-programmable I/Os, an interrupt generator,
and 1.8V and 2.7V voltage monitors in a single chip.
The MAX11358B has dual 10:1 differential input multiplex-
ers (muxes) that accept signal levels from 0 to AVDD. An
on-chip 1x to 8x programmable-gain amplifier (PGA)
allows measuring low-level signals and reduces external
circuitry required.
The MAX11358B operates from a single +1.8V to +3.6V
supply and consumes only 1.15mA in normal mode and
only 3µA in sleep mode. The MAX11358B has two
DACs with one uncommitted op amp.
The serial interface is compatible with either SPI™/QSPI™
or MICROWIRE™, and is used to power up, configure,
and check the status of all functional blocks.
The MAX11358B is available in a space-saving, 40-pin
TQFN package and is specified over the commercial
(0°C to +70°C) and the extended (-40°C to +85°C) tem-
perature ranges.
Applications
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Electrochemical and Optical Sensors
Medical Instruments
Industrial Control
Data-Acquisition Systems
PART
MAX11358B_ _ _
DACs
2
Selector Guide
OP
AMPs
1
SPDT/SPST
SWITCHES
2/2
Features
♦ +1.8V to +3.6V Single-Supply Operation
♦ Multichannel, 16-Bit, Sigma-Delta ADC
10sps to 477sps Programmable Conversion Rate
Self- and System Offset and Gain Calibration
PGA with Gains of 1, 2, 4, or 8
Unipolar and Bipolar Modes
10-Input Differential Multiplexer
♦ 10-Bit Force-Sense DACs
♦ Uncommitted Op Amps
♦ Dual SPDT and SPST Analog Switches
♦ Selectable References
1.25V, 2.048V, and 2.5V
♦ Internal Charge Pump
♦ System Support
RTC and Alarm Register
Internal/External Temperature Sensor
Internal Oscillator with Clock Output
User-Programmable I/O and Interrupt Generator
VDD Monitors
♦ SPI/QSPI/MICROWIRE, 4-Wire Serial Interface
♦ Space-Saving (6mm x 6mm x 0.8mm), 40-Pin
TQFN Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX11358BCTL+
0°C to +70°C
40 TQFN-EP*
MAX11358BETL+
-40°C to +85°C
40 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Pin Configuration
TOP VIEW
30 29 28 27 26 25 24 23 22 21
AIN2 31
AIN1 32
REF 33
REG 34
CF- 35
CF+ 36
CPOUT 37
DVDD 38
DGND 39
UPIO1 40
MAX11358B
+ *EP
1 2 3 4 5 6 7 8 9 10
20 OUT1
19 SNC2
18 SCM2
17 SNO2
16 SNC1
15 SCM1
14 SNO1
13 32KIN
12 32KOUT
11 RESET
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
*EXPOSED PAD.
TQFN
________________________________________________________________ Maxim Integrated Products 1
For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
16-Bit Data-Acquisition System with ADC, DAC,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
ELECTRICAL CHARACTERISTICS (continued)
(AVDD = DVDD = +1.8V to +3.6V, VREF = +1.25V, external reference, CLK32K = 32.768kHz (external clock), CREG = 10µF, CCPOUT =
10µF, 10µF between CF+ and CF-, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Output Slew Rate
Output-Voltage Settling Time
52 hex to 3FF hex code swing rising or
falling, RL = 10k, CL = 100pF
10% to 90% rising or falling to ±0.5 LSB
Input-Voltage Noise
Referred to FBA,
excludes reference
noise
f = 0.1Hz to
10H z
f = 10Hz to
10kHz
Output Short-Circuit Current
Input-Output SWA/SWB
Switch Resistance
OUTA shorted to AGND
OUTA shorted to AVDD
Between SW_ and OUT_, HFCLK enabled
SWA/SWB Switch Turn-On/Off
Time
HFCLK enabled
Power-On Time
Excluding reference
EXTERNAL REFERENCE (REF)
Input Voltage Range
Input Resistance
DAC on, internal REF and ADC off
DC Input Leakage Current
Internal REF, DAC, and ADC off (Note 7)
INTERNAL VOLTAGE REFERENCE (CREF = 4.7μF)
AVDD +1.8V,
TA = +25°C
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Reference Output Voltage
VREF
AVDD +2.2V,
TA = +25°C
AVDD +2.7V,
TA = +25°C
Output-Voltage Temperature
Coefficient (Note 7)
Output Short-Circuit Current
TC
IRSC
TA = -40°C to +85°C
TA = 0°C to +70°C
REF shorted to AGND
REF shorted to AVDD
MIN TYP
50
65
40
100
20
18
100
12
VAGND
2.5
1.213 1.25
1.987 2.048
2.425
2.5
25
13
65
90
MAX UNITS
V/ms
μs
μVP-P
mA
150
ns
μs
AVDD
100
V
M
nA
1.288
2.109
2.575
V
ppm/oC
mA
μA
Line Regulation
25 μV/V
Load Regulation
TA = +25°C,
VREF = 1.25V
ISOURCE = 0 to 500μA
ISINK = 0 to 50μA
1.2
μV/μA
1.7
4 _______________________________________________________________________________________
4페이지 16-Bit Data-Acquisition System with ADC, DAC,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
ELECTRICAL CHARACTERISTICS (continued)
(AVDD = DVDD = +1.8V to +3.6V, VREF = +1.25V, external reference, CLK32K = 32.768kHz (external clock), CREG = 10µF, CCPOUT =
10µF, 10µF between CF+ and CF-, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Input Capacitance
SNO_, SNC_, or SCM_ = AVDD or AGND;
switch connected to enabled mux input
CHARGE PUMP
Maximum Output Current
Output Voltage
Output-Voltage Ripple
IOUT
No load
IOUT = 10mA
IOUT = 10mA, excluding ESR of external
capacitor
Load Regulation
IOUT = 10mA, excluding ESR of external
capacitor
REG Input Voltage Range
REG Input Current
CPOUT Input Voltage Range
CPOUT Input Leakage Current
SIGNAL-DETECT COMPARATOR
Differential Input-Detection
Threshold Voltage
Internal linear regulator disabled
Linear regulator off, charge pump off
Charge pump disabled
Charge pump disabled
TSEL[2:0] = 0 hex
TSEL[2:0] = 4 hex
TSEL[2:0] = 5 hex
TSEL[2:0] = 6 hex
TSEL[2:0] = 7 hex
Differential Input-Detection
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Common-Mode Input Voltage
Range
Turn-On Time
VOLTAGE MONITORS
DVDD Monitor Supply Voltage
Range
Trip Threshold (DVDD Falling)
DVDD Monitor Timeout Reset
Period
DVDD Monitor Hysteresis
For valid reset
HYSE bit set to logic 1
HYSE bit set to logic 0
MIN TYP MAX UNITS
2.5 pF
10 mA
3.2 3.3 3.6
3.0
V
50 mVP-P
15 20 mV/mA
1.6 1.8 V
3 nA
1.8 3.6 V
2 nA
0
50
100 mV
150
200
±10 mV
VAGND
45
AVDD
V
μs
1.4 3.6
1.80 1.85 1.95
1.5
225
40
V
V
s
mV
_______________________________________________________________________________________ 7
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부품번호 | 상세설명 및 기능 | 제조사 |
MAX11358B | 16-Bit Data-Acquisition System | Maxim Integrated |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |