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PDF MAX1021 Data sheet ( Hoja de datos )
| Número de pieza | MAX1021 | |
| Descripción | 10-Bit / Multichannel ADCs/DACs with FIFO / Temperature Sensing / and GPIO Ports | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-3280; Rev 2; 8/04
EVAALVUAAILTAIOBNLEKIT
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
General Description
The MAX1020–MAX1023/MAX1057/MAX1058 integrate a
multichannel, 10-bit, analog-to-digital converter (ADC)
and an octal, 10-bit, digital-to-analog converter (DAC) in a
single IC. These devices also include a temperature sen-
sor and configurable general-purpose I/O ports (GPIOs)
with a 25MHz SPI™-/QSPI™-/MICROWIRE™-compatible
serial interface. The ADC is available in 8/12/16 input-
channel versions. The octal 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 the DAC allow the use of an internal refer-
ence, 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 con-
sumption and processor requirements. The low glitch
energy (4nV•s) and low digital feedthrough (0.5nV•s) of
the integrated octal 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 (MAX1021/MAX1023/MAX1057)
and from +4.75V to +5.25V (MAX1020/MAX1022/
MAX1058). The devices consume 2.5mA at 300ksps
throughput, only 22µA at 1ksps throughput, and under
0.2µA in the shutdown mode. The MAX1057/MAX1058
feature 12 GPIOs, while the MAX1020/MAX1021 offer 4
GPIOs that can be configured as inputs or outputs.
The MAX1057/MAX1058 are available in 48-pin thin QFN
packages. The MAX1020–MAX1023 are available in 36-
pin thin QFN packages. All devices are specified over the
-40°C to +85°C temperature range.
Applications
Controls for Optical Components
Base-Station Control Loops
System Supervision and Control
Data-Acquisition Systems
Features
♦ 10-Bit, 300ksps ADC
Analog Multiplexer with True-Differential
Track/Hold (T/H)
16 Single-Ended Channels or 8 Differential
Channels (Unipolar or Bipolar)
12 Single-Ended Channels or 6 Differential
Channels (Unipolar or Bipolar)
8 Single-Ended Channels or 4 Differential
Channels (Unipolar or Bipolar)
Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL
♦ 10-Bit, Octal, 2µs Settling DAC
Ultra-Low Glitch Energy (4nV•s)
Power-Up Options from Zero Scale or Full Scale
Excellent Accuracy: ±1 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)
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.
Ordering Information/Selector Guide
PART
TEMP RANGE
PIN-PACKAGE
REF
VOLTAGE
(V)
ANALOG
SUPPLY
VOLTAGE (V)
RESOLUTION
BITS***
ADC
DAC
CHANNELS CHANNELS
GPIOs
MAX1020BETX -40°C to +85°C 36 Thin QFN-EP** 4.096
4.75 to 5.25
10
8 84
MAX1021BETX* -40°C to +85°C 36 Thin QFN-EP** 2.5
2.7 to 3.6
10
8 84
MAX1022BETX* -40°C to +85°C 36 Thin QFN-EP** 4.096
4.75 to 5.25
10
12 8 0
MAX1023BETX* -40°C to +85°C 36 Thin QFN-EP** 2.5
2.7 to 3.6
10
12 8 0
MAX1057BETM -40°C to +85°C 48 Thin QFN-EP** 2.5
2.7 to 3.6
10
16 8 12
MAX1058BETM -40°C to +85°C 48 Thin QFN-EP** 4.096
*Future product—contact factory for availability.
**EP = Exposed pad.
***Number of resolution bits refers to both DAC and ADC.
4.75 to 5.25
10
16 8
Pin Configurations appear at end of data sheet.
12
________________________________________________________________ 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.
1 page  
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)
(AVDD = DVDD = 2.7V to 3.6V (MAX1021/MAX1023/MAX1057), external reference VREF = 2.5V (MAX1021/MAX1023/MAX1057), AVDD =
DVDD = 4.75V to 5.25V (MAX1020/MAX1022/MAX1058), external reference VREF = 4.096V (MAX1020/MAX1022/MAX1058), fSCLK = 4.8MHz
(50% duty cycle), TA = -40°C to +85°C, unless otherwise noted. Typical values are at AVDD = DVDD = 3V (MAX1021/MAX1023/MAX1057),
AVDD = DVDD = 5V (MAX1020/MAX1022/MAX1058), TA = +25°C. Outputs are unloaded, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
Wake-Up Time (Note 12)
1kΩ Output Termination
From power-down mode, AVDD = 5V
From power-down mode, AVDD = 2.7V
Programmed in power-down mode
100kΩ Output Termination
At wake-up or programmed in
power-down mode
DYNAMIC PERFORMANCE (Notes 5, 13)
Output-Voltage Slew Rate
SR Positive and negative
Output-Voltage Settling Time
Digital Feedthrough
tS To 1 LSB, 400 - C00 hex (Note 7)
Code 0, all digital inputs from 0 to DVDD
Major Code Transition Glitch
Impulse
Between codes 2047 and 2048
Output Noise (0.1Hz to 50MHz)
Output Noise (0.1Hz to 500kHz)
From VREF
Using internal reference
From VREF
Using internal reference
DAC-to-DAC Transition
Crosstalk
INTERNAL REFERENCE
REF1 Output Voltage (Note 8)
REF1 Temperature Coefficient
TCREF
REF1 Short-Circuit Current
EXTERNAL-REFERENCE INPUT
MAX1021/MAX1023/MAX1057
MAX1020/MAX1022/MAX1058
VREF = 2.5V
VREF = 4.096V
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
Input-Voltage Low
VIL
Input Leakage Current
IL
Input Capacitance
CIN
DIGITAL OUTPUT (DOUT) (Note 14)
DVDD = 2.7V to 5.25V
DVDD = 3.6V to 5.25V
DVDD = 2.7V to 3.6V
Output-Voltage Low
VOL ISINK = 2mA
MIN
3
2.482
4.066
0.7
70
2.4
TYP
25
21
1
100
MAX
25
0.5
4
660
720
260
320
0.5
2.50
4.096
±30
0.39
0.63
2.518
4.126
AVDD
100 130
±0.01
15
0.8
0.6
±10
0.4
UNITS
µs
kΩ
kΩ
V/µs
µs
nV•s
nV•s
µVP-P
µVP-P
nV•s
V
ppm/°C
mA
V
kΩ
V
V
µA
pF
V
_______________________________________________________________________________________ 5
5 Page 
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
Typical Operating Characteristics (continued)
(AVDD = DVDD = 3V (MAX1021/MAX1023/MAX1057), external VREF = 2.5V (MAX1021/MAX1023/MAX1057), AVDD = DVDD = 5V
(MAX1020/MAX1022/MAX1058), external VREF = 4.096V (MAX1020/MAX1022/MAX1058), 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
MAX1021/MAX1023/MAX1057
2.10
-40 -15 10 35
TEMPERATURE (°C)
60
85
DAC DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
0.10
-0.2
MAX1020/MAX1022/MAX1058
-0.3
0 256 512
OUTPUT CODE
768
1024
DAC DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
0.10
-0.2
MAX1021/MAX1023/MAX1057
-0.3
0 256 512
OUTPUT CODE
768
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
MAX1020/MAX1022/MAX1058
-0.10
1023 1026 1029 1032 1035 1038
OUTPUT CODE
DAC FULL-SCALE ERROR
vs. ANALOG SUPPLY VOLTAGE
-0.50
-0.55
-0.60
-0.65
MAX1021/MAX1023/MAX1057
-0.70
2.7 3.0 3.3
SUPPLY VOLTAGE (V)
3.6
MAX1021/MAX1023/MAX1057
-0.10
1023 1026 1029 1032 1035 1038
OUTPUT CODE
DAC FULL-SCALE ERROR
vs. TEMPERATURE
2.0
1.5 INTERNAL REFERENCE
1.0
0.5
0
EXTERNAL REFERENCE = 4.096V
-0.5
MAX1020/MAX1022/MAX1058
-1.0
-40 -15 10 35
TEMPERATURE (°C)
60
85
MAX1020/MAX1022/MAX1058
0
4.75 4.85 4.95 5.05
5.15
SUPPLY VOLTAGE (V)
DAC FULL-SCALE ERROR
vs. TEMPERATURE
0
-0.25
-0.50
EXTERNAL REFERENCE = 2.500V
-0.75
-1.00
INTERNAL REFERENCE
-1.25
-1.50
-1.75
MAX1021/MAX1023/MAX1057
-2.00
-40 -15 10 35
TEMPERATURE (°C)
60
5.25
85
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX1021.PDF ] | |
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