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PDF MAX1049 Data sheet ( Hoja de datos )
| Número de pieza | MAX1049 | |
| Descripción | (MAX1040 - MAX1049) Multichannel ADCs/DACs | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX1049 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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19-3294; Rev 1; 8/04
EVAALVUAAILTAIOBNLEKIT
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
General Description
The MAX1040–MAX1043/MAX1046–MAX1049 integrate a
multichannel, 10-bit, analog-to-digital converter (ADC)
and a quad, 10-bit, digital-to-analog converter (DAC) in a
single IC. The devices also include a temperature sensor
and configurable general-purpose I/O ports (GPIOs) with
a 25MHz SPI™-/QSPI™-/MICROWIRE™-compatible seri-
al interface. The ADC is available in a 4 or an 8 input-
channel version. The four DAC outputs settle within 2.0µs,
and the ADC has a 300ksps conversion rate.
All devices include an internal reference (2.5V or 4.096V)
providing a well-regulated, low-noise reference for both
the ADC and DAC. Programmable reference modes for
the ADC and DAC allow the use of an internal reference,
an external reference, or a combination of both. Features
such as an internal ±1°C accurate temperature sensor,
FIFO, scan modes, programmable internal or external
clock modes, data averaging, and AutoShutdown™ allow
users to minimize both power consumption and proces-
sor requirements. The low glitch energy (4nV•s) and low
digital feedthrough (0.5nV•s) of the integrated quad
DACs make these devices ideal for digital control of fast-
response closed-loop systems.
The devices are guaranteed to operate with a supply volt-
age from +2.7V to +3.6V (MAX1041/MAX1043/MAX1047/
MAX1049) and from +4.75V to +5.25V (MAX1040/
MAX1042/MAX1046/MAX1048). These devices consume
2.5mA at 300ksps throughput, only 22µA at 1ksps
throughput, and under 0.2µA in the shutdown mode. The
MAX1042/MAX1043/MAX1048/MAX1049 offer four GPIOs
that can be configured as inputs or outputs.
The MAX1040–MAX1043/MAX1046–MAX1049 are avail-
able in 36-pin thin QFN packages. All devices are speci-
fied over the -40°C to +85°C temperature range.
Features
♦ 10-Bit, 300ksps ADC
Analog Multiplexer with True-Differential
Track/Hold (T/H)
8 Single-Ended Channels or 4 Differential
Channels (Unipolar or Bipolar)
4 Single-Ended Channels or 2 Differential
Channels (Unipolar or Bipolar)
Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB
DNL, No Missing Codes Over Temperature
♦ 10-Bit, Quad, 2µs Settling DAC
Ultra-Low-Glitch Energy (4nV•s)
Power-Up Options from Zero Scale or Full Scale
Excellent Accuracy: ±0.5 LSB INL
♦ Internal Reference or External Single-Ended/
Differential Reference
Internal Reference Voltage 2.5V or 4.096V
♦ Internal ±1°C Accurate Temperature Sensor
♦ On-Chip FIFO Capable of Storing 16 ADC
Conversion Results and One Temperature Result
♦ On-Chip Channel-Scan Mode and Internal
Data-Averaging Features
♦ Analog Single-Supply Operation
+2.7V to +3.6V or +4.75V to +5.25V
♦ 25MHz, SPI/QSPI/MICROWIRE Serial Interface
♦ AutoShutdown Between Conversions
♦ Low-Power ADC
2.5mA at 300ksps
22µA at 1ksps
0.2µA at Shutdown
♦ Low-Power DAC: 1.5µA
♦ Evaluation Kit Available (Order MAX1258EVKIT)
Applications
Closed-Loop Controls for Optical Components
and Base Stations
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
System Supervision and Control
Data-Acquisition Systems
Ordering Information/Selector Guide
PART
TEMP RANGE
PIN-PACKAGE
REF
VOLTAGE
(V)
ANALOG
SUPPLY
VOLTAGE (V)
RESOLUTION
BITS***
ADC
CHANNELS
DAC
CHANNELS
GPIOs
MAX1040BETX -40°C to +85°C 36 Thin QFN-EP** 4.096 4.75 to 5.25
10
8 40
MAX1041BETX* -40°C to +85°C 36 Thin QFN-EP** 2.5
2.7 to 3.6
10
8 40
MAX1042BETX -40°C to +85°C 36 Thin QFN-EP** 4.096 4.75 to 5.25
10
8 44
MAX1043BETX* -40°C to +85°C 36 Thin QFN-EP**
*Future product—contact factory for availability.
**EP = Exposed pad.
***Number of resolution bits refers to both DAC and ADC.
2.5
2.7 to 3.6
10
8 44
Ordering Information/Selector Guide continued on last page.
Pin Configurations appear at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Free Datasheet http://www.datasheet4u.com/
1 page  
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)
(AVDD = DVDD = 2.7V to 3.6V (MAX1041/MAX1043/MAX1047/MAX1049), external reference VREF = 2.5V (MAX1041/MAX1043/
MAX1047/MAX1049), AVDD = DVDD = 4.75V to 5.25V (MAX1040/MAX1042/MAX1046/MAX1048), external reference VREF = 4.096V
(MAX1040/MAX1042/MAX1046/MAX1048), fSCLK = 4.8MHz (50% duty cycle), TA = -40°C to +85°C, unless otherwise noted. Typical
values are at AVDD = DVDD = 3V (MAX1041/MAX1043/MAX1047/MAX1049), AVDD = DVDD = 5V (MAX1040/MAX1042/
MAX1046/MAX1048), TA = +25°C. Outputs are unloaded, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Wake-Up Time (Note 12)
1kΩ Output Termination
From power-down mode, AVDD = 5V
From power-down mode, AVDD = 2.7V
25
21
µs
Programmed in power-down mode
1 kΩ
100kΩ Output Termination
At wake-up or programmed in
power-down mode
100 kΩ
DYNAMIC PERFORMANCE (Notes 5, 13)
Output-Voltage Slew Rate
SR
Positive and negative
3
V/µs
Output-Voltage Settling Time
Digital Feedthrough
tS To 1 LSB, 400 - C00 hex (Note 7)
Code 0, all digital inputs from 0 to DVDD
25
µs
0.5 nV•s
Major Code Transition Glitch
Impulse
Between codes 2047 and 2048
4 nV•s
Output Noise (0.1Hz to 50MHz)
Output Noise (0.1Hz to 500kHz)
From VREF
Using internal reference
From VREF
Using internal reference
660
720 µVP-P
260
µVP-P
320
DAC-to-DAC Transition
Crosstalk
0.5 nV•s
INTERNAL REFERENCE
REF1 Output Voltage
MAX1041/MAX1043/MAX1047/MAX1049
MAX1040/MAX1042/MAX1046/MAX1048
2.482
4.066
2.50
4.096
2.518
4.126
V
REF1 Temperature Coefficient
TCREF
±30 ppm/°C
REF1 Short-Circuit Current
VREF = 2.5V (MAX1041/MAX1043/
MAX1047/MAX1049)
VREF = 4.096V (MAX1040/MAX1042/
MAX1046/MAX1048)
0.39
mA
0.63
EXTERNAL REFERENCE INPUT
REF1 Input Voltage Range
VREF1 REF modes 01, 10, and 11 (Note 4)
REF1 Input Impedance
RREF1
DIGITAL INTERFACE
DIGITAL INPUTS (SCLK, DIN, CS, CNVST, LDAC)
Input-Voltage High
VIH DVDD = 2.7V to 5.25V
DVDD = 3.6V to 5.25V
DVDD = 2.7V to 3.6V
Input-Voltage Low
VIL DVDD = 3V to 3.6V
DVDD = 2.7V to 3V
Input Leakage Current
IL
0.7
AVDD
V
70 100 130
kΩ
2.4
2.0
0.8
0.6
0.5
0.01 ±10
V
V
µA
_______________________________________________________________________________________ 5
Free Datasheet http://www.datasheet4u.com/
5 Page 
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
Typical Operating Characteristics (continued)
(AVDD = DVDD = 3V (MAX1041/MAX1043/MAX1047/MAX1049), external VREF = 2.5V (MAX1041/MAX1043/MAX1047/MAX1049),
AVDD = DVDD = 5V (MAX1040/MAX1042/MAX1046/MAX1048), external VREF = 4.096V (MAX1040/MAX1042/MAX1046/MAX1048),
fCLK = 4.8MHz (50% duty cycle), fSAMPLE = 300ksps, CLOAD = 50pF, 0.1µF capacitor at REF, TA = +25°C, unless otherwise noted.)
ANALOG SUPPLY CURRENT
vs. TEMPERATURE
2.16
DAC INTEGRAL NONLINEARITY
vs. OUTPUT CODE
0.3
DAC INTEGRAL NONLINEARITY
vs. OUTPUT CODE
0.3
2.15 0.2 0.2
2.14 0.1 0.1
2.13 0 0
2.12 -0.1 -0.1
2.11
MAX1041/MAX1043/MAX1047/MAX1049
2.10
-40 -15 10 35 60
TEMPERATURE (°C)
85
DAC DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
0.10
-0.2
MAX1040/MAX1042/MAX1046/MAX1048
-0.3
0 256 512 768
OUTPUT CODE
1024
DAC DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
0.10
-0.2
MAX1041/MAX1043/MAX1047/MAX1049
-0.3
0 256 512 768
OUTPUT CODE
1024
DAC FULL-SCALE ERROR
vs. ANALOG SUPPLY VOLTAGE
0.04
0.05 0.05 0.03
0 0 0.02
-0.05 -0.05 0.01
MAX1040/MAX1042/MAX1046/MAX1048
-0.10
1023 1026 1029 1032 1035
OUTPUT CODE
1038
DAC FULL-SCALE ERROR
vs. ANALOG SUPPLY VOLTAGE
-0.50
MAX1041/MAX1043/MAX1047/MAX1049
-0.10
1023 1026 1029 1032 1035
OUTPUT CODE
DAC FULL-SCALE ERROR
vs. TEMPERATURE
2.0
1038
MAX1040/MAX1042/MAX1046/MAX1048
0
4.75 4.85 4.95 5.05 5.15
SUPPLY VOLTAGE (V)
DAC FULL-SCALE ERROR
vs. TEMPERATURE
0
5.25
-0.55
-0.60
-0.65
MAX1041/MAX1043/MAX1047/MAX1049
-0.70
2.7 3.0 3.3
SUPPLY VOLTAGE (V)
3.6
1.5 INTERNAL REFERENCE
1.0
0.5
0
EXTERNAL REFERENCE = 4.096V
-0.5
MAX1040/MAX1042/MAX1046/MAX1048
-1.0
-40 -15 10 35 60
TEMPERATURE (°C)
85
-0.25
-0.50
EXTERNAL REFERENCE = 2.500V
-0.75
-1.00
INTERNAL REFERENCE
-1.25
-1.50
-1.75
MAX1041/MAX1043/MAX1047/MAX1049
-2.00
-40 -15 10 35 60
TEMPERATURE (°C)
85
______________________________________________________________________________________ 11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX1049.PDF ] | |
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