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PDF MSC1212Y4PAGT Data sheet ( Hoja de datos )
| Número de pieza | MSC1212Y4PAGT | |
| Descripción | Precision Analog-to-Digital Converter (ADC) | |
| Fabricantes | Burr-Brown Corporation | |
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MSC1212 ®
MSC1212
SBAS278A – MARCH 2003 – REVISED DECEMBER 2004
Precision Analog-to-Digital Converter (ADC)
and Digital-to-Analog Converters (DACs)
with 8051 Microcontroller and Flash Memory
FEATURES
ANALOG FEATURES
q 24-BITS NO MISSING CODES
q 22-BITS EFFECTIVE RESOLUTION AT 10Hz
Low Noise: 75nV
q PGA FROM 1 TO 128
q PRECISION ON-CHIP VOLTAGE REFERENCE:
Accuracy: 0.2%
Drift: 5ppm/°C
q 8 DIFFERENTIAL/SINGLE-ENDED CHANNELS
q ON-CHIP OFFSET/GAIN CALIBRATION
q OFFSET DRIFT: 0.02PPM/°C
q GAIN DRIFT: 0.5PPM/°C
q ON-CHIP TEMPERATURE SENSOR
q SELECTABLE BUFFER INPUT
q BURNOUT DETECT
q QUAD 16-BIT MONOTONIC VOLTAGE DACs:
2 VDACs Can Be Programmed as IDACs
8µs Settling Time
DIGITAL FEATURES
Microcontroller Core
q 8051 COMPATIBLE
q HIGH SPEED CORE:
4 Clocks per Instruction Cycle
q DC TO 30MHz
q SINGLE INSTRUCTION 133ns
q DUAL DATA POINTER
Memory
q UP TO 32kB FLASH DATA MEMORY
q FLASH MEMORY PARTITIONING
q ENDURANCE 1M ERASE/WRITE CYCLES,
100-YEAR DATA RETENTION
q IN-SYSTEM SERIALLY PROGRAMMABLE
q EXTERNAL PROGRAM/DATA MEMORY (64kB)
q 1280 BYTES DATA SRAM
q FLASH MEMORY SECURITY
q 2kB BOOT ROM
q PROGRAMMABLE WAIT STATE CONTROL
Peripheral Features
q 34 I/O PINS
q ADDITIONAL 32-BIT ACCUMULATOR
q THREE 16-BIT TIMER/COUNTERS
q SYSTEM TIMERS
q PROGRAMMABLE WATCHDOG TIMER
q FULL-DUPLEX DUAL USARTS
q MASTER/SLAVE SPI™ WITH DMA
q 16-BIT PWM
q POWER MANAGEMENT CONTROL
q INTERNAL CLOCK DIVIDER
q IDLE MODE CURRENT < 200µA
q STOP MODE CURRENT < 100nA
q PROGRAMMABLE BROWNOUT RESET
q PROGRAMMABLE LOW VOLTAGE DETECT
q 21 INTERRUPT SOURCES
q TWO HARDWARE BREAKPOINTS
GENERAL FEATURES
q PIN-COMPATIBLE WITH MSC1210/11/13/14
q PACKAGE: TQFP-64
q LOW POWER: 4mW
q INDUSTRIAL TEMPERATURE RANGE:
–40°C to +85°C
q POWER SUPPLY: 2.7V to 5.25V
APPLICATIONS
q INDUSTRIAL PROCESS CONTROL
q INSTRUMENTATION
q LIQUID/GAS CHROMATOGRAPHY
q BLOOD ANALYSIS
q SMART TRANSMITTERS
q PORTABLE INSTRUMENTS
q WEIGH SCALES
q PRESSURE TRANSDUCERS
q INTELLIGENT SENSORS
q PORTABLE APPLICATIONS
q DAS SYSTEMS
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
Copyright © 2003-2004, Texas Instruments Incorporated
1 page  
ELECTRICAL CHARACTERISTICS: AVDD = 3V (Cont.)
All specifications from TMIN to TMAX, AVDD = +3V, DVDD = +2.7V to 5.25V, fMOD = 15.625kHz, PGA = 1, Buffer ON, fDATA = 10Hz, and Bipolar, VREF ≡ (REF IN+) – (REF IN–) = +1.25V,
unless otherwise noted. For VDAC, VREF = AVDD, RLOAD = 10kΩ, and CLOAD = 200pF, unless otherwise noted.
MSC1212Yx
PARAMETER
CONDITION
MIN
TYP
MAX
UNITS
SYSTEM PERFORMANCE (Cont.)
Common-Mode Rejection
Normal Mode Rejection
Power-Supply Rejection
VOLTAGE REFERENCE INPUTS
Reference Input Range
VREF
VREF Common-Mode Rejection
Input Current(4)
DAC Reference Current
At DC
fCM = 60Hz, fDATA = 10Hz
fCM = 50Hz, fDATA = 50Hz
fCM = 60Hz, fDATA = 60Hz
fSIG = 50Hz, fDATA = 50Hz
fSIG = 60Hz, fDATA = 60Hz
At DC, dB = –20log(∆VOUT/∆VDD)(3)
REF IN+, REF IN–
VREF ≡ (REF IN+) – (REF IN–)
At DC
VREF = 1.25V, ADC Only
For each DAC, 3V Reference
100 115
130
120
120
100
100
85
dB
dB
dB
dB
dB
dB
dB
0.0
AVDD(2)
V
0.3
1.25
AVDD
V
110 dB
10 µA
25 µA
ON-CHIP VOLTAGE REFERENCE
Output Voltage
Power-Supply Rejection Ratio
Short-Circuit Current Source
Short-Circuit Current Sink
Short-Circuit Duration
Drift
Output Impedance
Startup Time from Power ON
Temperature Sensor
Temperature Sensor Voltage
Temperature Sensor Coefficient
VREFH = 0 at +25°C, PGA = 1, 2, 4, 8
Sink or Source
Sourcing 100µA
CREFOUT = 0.1µF
T = +25°C
1.245
1.25
65
2.6
50
Indefinite
5
3
8
115
375
1.255
V
dB
mA
µA
ppm/°C
Ω
ms
mV
µV/°C
VOLTAGE DAC STATIC PERFORMANCE (5)
Resolution
Relative Accuracy
Differential Nonlinearity
Zero Code Error
Full-Scale Error
Gain Error
Zero Code Error Drift
Gain Temperature Coefficient
Ensured Monotonic by Design
All 0s Loaded to DAC Register
All 1s Loaded to DAC Register
16
–1.25
–1.25
±0.05
+13
0
0
±20
±5
±0.146
±1
+35
±1.25
Bits
% of FSR
LSB
mV
% of FSR
% of FSR
µV/°C
ppm of FSR/°C
VOLTAGE DAC OUTPUT CHARACTERISTICS(6)
Output Voltage Range
Output Voltage Settling Time
Slew Rate
AGND
AVDD
V
To ±0.003% FSR, 0200H to FD00H
8 µs
1 V/µs
DC Output Impedance
7Ω
Short-Circuit Current
All 1s Loaded to DAC Register
16 mA
IDAC OUTPUT CHARACTERISTICS
Full-Scale Output Current
Maximum Short-Circuit Current Duration
Compliance Voltage
Relative Accuracy
Zero Code Error
Full-Scale Error
Gain Error
Maximum VREF = 2.5V
Over Full Range
25
Indefinite
AVDD – 1.5
0.185
0.5
–0.4
–0.6
mA
% of FSR
% of FSR
% of FSR
% of FSR
ANALOG POWER-SUPPLY REQUIREMENTS
Analog Power-Supply Voltage
Analog Current
ADC Current
IADC + IVREF
IADC
VDAC Current
VREF Current
IVDAC
IVREF
AVDD
Analog OFF, PDAD = 1
PGA = 1, Buffer OFF
PGA = 128, Buffer OFF
PGA = 1, Buffer ON
PGA = 128, Buffer ON
Excluding Load Current External Reference
2.7
3.6
<1
200
500
240
850
250
250
V
nA
µA
µA
µA
µA
µA
µA
NOTES: (1) Calibration can minimize these errors. (2) The gain calibration cannot have a REF IN+ of more than AVDD – 1.5V with buffer ON. To calibrate gain,
turn buffer off. (3) ∆VOUT is change in digital result. (4) 9pF switched capacitor at fSAMP clock frequency (see Figure 6). (5) Linearity calculated using a reduced code
range of 512 to 65024; output unloaded. (6) Ensured by design and characterization, not production tested.
MSC1212
SBAS278A
www.ti.com
5
5 Page 
PIN CONFIGURATION
Top View
TQFP
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
XOUT 1
XIN 2
P3.0/RxD0 3
P3.1/TxD0 4
P3.2/INT0 5
P3.3/INT1/TONE/PWM 6
P3.4/T0 7
P3.5/T1 8
P3.6/WR 9
P3.7/RD 10
DVDD 11
DGND 12
RST 13
DVDD 14
DVDD 15
RDAC0 16
MSC1212
48 EA
47 P0.6/AD6
46 P0.7/AD7
45 ALE
44 PSEN/OSCCLK/MODCLK
43 P2.7/A15
42 DVDD
41 DGND
40 P2.6/A14
39 P2.5/A13
38 P2.4/A12
37 P2.3/A11
36 P2.2/A10
35 P2.1/A09
34 P2.0/A08
33 NC
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
PIN DESCRIPTIONS
PIN #
1
2
3-10
NAME
XOUT
XIN
P3.0-P3.7
DESCRIPTION
The crystal oscillator pin XOUT supports parallel resonant AT cut crystals and ceramic resonators. XOUT serves as the output
of the crystal amplifier.
The crystal oscillator pin XIN supports parallel resonant AT cut crystals and ceramic resonators. XIN can also be an input if
there is an external clock source instead of a crystal.
Port 3 is a bidirectional I/O port. The alternate functions for Port 3 are listed below.
Port 3—Alternate Functions:
11, 14, 15, 42, 58
12, 41, 57
DVDD
DGND
13 RST
16 RDAC0
17 VDAC0
27 AGND
18 IDAC0/AIN0
19 IDAC1/AIN1
PORT
ALTERNATE MODE
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
RxD0
TxD0
INT0
INT1/TONE/PWM
T0
T1
WR
RD
Serial Port 0 Input
Serial Port 0 Output
External Interrupt 0
External Interrupt 1/TONE/PWM Output
Timer 0 External Input
Timer 1 External Input
External Data Memory Write Strobe
External Data Memory Read Strobe
Digital Power Supply
Digital Ground
A HIGH on the reset input for two tOSC periods will reset the device.
RDAC0 Output
VDAC0 Output
Analog Ground
IDAC0 Output/Analog Input Channel 0
IDAC1 Output/Analog Input Channel 1
MSC1212
SBAS278A
www.ti.com
11
11 Page | ||
| Páginas | Total 69 Páginas | |
| PDF Descargar | [ Datasheet MSC1212Y4PAGT.PDF ] | |
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