19-3280; Rev 5; 2/12
KIT
ATION
EVALU
BLE
AVAILA
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
General Description
The MAX1020/MAX1022/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 225ksps 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 (MAX1057) and from +4.75V to
+5.25V (MAX1020/MAX1022/MAX1058). The devices
consume 2.5mA at 225ksps throughput, only 22µA at
1ksps throughput, and under 0.2µA in the shutdown
mode. The MAX1057/MAX1058 feature 12 GPIOs, while
the MAX1020 offers four GPIOs that can be configured as
inputs or outputs.
The MAX1057/MAX1058 are available in 48-pin thin QFN
packages. The MAX1020/MAX1022 are available in 36-
pin thin QFN packages. All devices are specified over the
-40°C to +85°C temperature range.
Features
o
10-Bit, 225ksps ADC
Analog Multiplexer with True-Differential
Track/Hold (T/H)
16 Single-Ended Channels or 8 Differential
Channels (Unipolar or Bipolar)
(MAX1057/MAX1058)
12 Single-Ended Channels or 6 Differential
Channels (Unipolar or Bipolar) (MAX1022)
8 Single-Ended Channels or 4 Differential
Channels (Unipolar or Bipolar) (MAX1020)
Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL
o
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
o
Internal Reference or External Single-Ended/
Differential Reference
Internal Reference Voltage 2.5V or 4.096V
o
Internal ±1°C Accurate Temperature Sensor
o
On-Chip FIFO Capable of Storing 16 ADC
Conversion Results and One Temperature Result
o
On-Chip Channel-Scan Mode and Internal
Data-Averaging Features
o
Analog Single-Supply Operation
+2.7V to +3.6V or +4.75V to +5.25V
o
Digital Supply: 2.7V to V
AVDD
o
25MHz, SPI/QSPI/MICROWIRE Serial Interface
o
AutoShutdown Between Conversions
o
Low-Power ADC
2.5mA at 225ksps
22µA at 1ksps
0.2µA at Shutdown
o
Low-Power DAC: 1.5mA
o
Evaluation Kit Available (Order MAX1258EVKIT)
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National Semiconductor
Corp.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
MAX1020/MAX1022/MAX1057/MAX1058
Applications
Controls for Optical Components
Base-Station Control Loops
System Supervision and Control
Data-Acquisition Systems
Ordering Information/Selector Guide
PART
MAX1020BETX
MAX1022BETX
MAX1057BETM
MAX1058BETM
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
36 TQFN-EP*
36 TQFN-EP*
48 TQFN-EP*
48 TQFN-EP*
REF
ANALOG
RESOLUTION
ADC
DAC
VOLTAGE
SUPPLY
GPIOs
BITS**
CHANNELS CHANNELS
(V)
VOLTAGE (V)
4.096
4.096
2.5
4.096
4.75 to 5.25
4.75 to 5.25
2.7 to 3.6
4.75 to 5.25
10
10
10
10
8
12
16
16
8
8
8
8
4
0
12
12
*EP
= Exposed pad.
**Number
of resolution bits refers to both DAC and ADC.
Pin Configurations appear at end of data sheet.
________________________________________________________________
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.
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
MAX1020/MAX1022/MAX1057/MAX1058
ABSOLUTE MAXIMUM RATINGS
AVDD to AGND ........................................................-0.3V to +6V
DGND to AGND.....................................................-0.3V to +0.3V
DVDD to AVDD......................................................-3.0V to +0.3V
Digital Inputs to DGND.............................................-0.3V to +6V
Digital Outputs to DGND ........................-0.3V to (V
DVDD
+ 0.3V)
Analog Inputs, Analog Outputs and REF_
to AGND .............................................-0.3V to (V
AVDD
+ 0.3V)
Maximum Current into Any Pin (except AGND, DGND, AVDD,
DVDD, and OUT_)...........................................................50mA
Maximum Current into OUT_.............................................100mA
Continuous Power Dissipation (multilayer board, T
A
= +70°C)
36-Pin TQFN (6mm x 6mm)
(derate 35.7mW/°C above +70°C) ......................2857.1mW
48-Pin TQFN (7mm x 7mm)
(derate 40mW/°C above +70°C) ............................3200mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-60°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note:
If the package power dissipation is not exceeded, one output at a time may be shorted to AVDD, DVDD, AGND, or DGND
indefinitely
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
AVDD
= V
DVDD
= 2.7V to 3.6V (MAX1057), external reference V
REF
= 2.5V (MAX1057), V
AVDD
= V
DVDD
= 4.75V to 5.25V
(MAX1020/MAX1022/MAX1058), external reference V
REF
= 4.096V (MAX1020/MAX1022/MAX1058), f
CLK
= 3.6MHz (50% duty cycle),
T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
AVDD
= V
DVDD
= 3V (MAX1057), V
AVDD
= V
DVDD
= 5V
(MAX1020/MAX1022/MAX1058), T
A
= +25°C. Outputs are unloaded, unless otherwise noted.)
PARAMETER
DC ACCURACY (Note 1)
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Gain Error
Gain Temperature Coefficient
Channel-to-Channel Offset
(Note 2)
INL
DNL
10
±0.5
±0.5
±0.25
±0.025
±1.4
±0.1
±1.0
±1.0
±2.0
±2.0
Bits
LSB
LSB
LSB
LSB
ppm/°C
LSB
SYMBOL
CONDITIONS
ADC
MIN
TYP
MAX
UNITS
DYNAMIC SPECIFICATIONS (10kHz sine-wave input, V
IN
= 2.5V
P-P
(MAX1057), V
IN
= 4.096V
P-P
(MAX1020/MAX1022/MAX1058),
225ksps, f
SCLK
= 3.6MHz)
Signal-to-Noise Plus Distortion
Total Harmonic Distortion
(Up to the Fifth Harmonic)
Spurious-Free Dynamic Range
Intermodulation Distortion
Full-Linear Bandwidth
Full-Power Bandwidth
CONVERSION RATE (Note 3)
External reference
Power-Up Time
t
PU
Internal reference (Note 4)
0.8
218
µs
Conversion
Clock
Cycles
SINAD
THD
SFDR
IMD
f
IN1
= 9.9kHz, f
IN2
= 10.2kHz
SINAD > 70dB
-3dB point
61
-70
66
72
100
1
dB
dBc
dBc
dBc
kHz
MHz
2
_______________________________________________________________________________________
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= V
DVDD
= 2.7V to 3.6V (MAX1057), external reference V
REF
= 2.5V (MAX1057), V
AVDD
= V
DVDD
= 4.75V to 5.25V
(MAX1020/MAX1022/MAX1058), external reference V
REF
= 4.096V (MAX1020/MAX1022/MAX1058), f
CLK
= 3.6MHz (50% duty cycle),
T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
AVDD
= V
DVDD
= 3V (MAX1057), V
AVDD
= V
DVDD
= 5V
(MAX1020/MAX1022/MAX1058), T
A
= +25°C. Outputs are unloaded, unless otherwise noted.)
PARAMETER
Acquisition Time
Conversion Time
External Clock Frequency
Duty Cycle
Aperture Delay
Aperture Jitter
ANALOG INPUTS
Input Voltage Range (Note 6)
Input Leakage Current
Input Capacitance
INTERNAL TEMPERATURE SENSOR
Measurement Error (Notes 5, 7)
Temperature Resolution
INTERNAL REFERENCE
REF1 Output Voltage (Note 8)
REF1 Voltage Temperature
Coefficient
REF1 Output Impedance
REF1 Short-Circuit Current
EXTERNAL REFERENCE
REF1 Input Voltage Range
REF2 Input Voltage Range
(Note 4)
V
REF1
REF mode 11 (Note 4)
REF mode 01
REF mode 11
1
1
0
V
AVDD
+ 0.05
V
AVDD
+ 0.05
1
V
V
REF
= 2.5V
V
REF
= 4.096V
TC
REF
MAX1057
MAX1020/MAX1022/MAX1058
2.482
4.066
2.50
4.096
±30
6.5
0.39
0.63
2.518
4.126
V
ppm/°C
kΩ
mA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
±0.7
±1.0
1/8
±3.0
°C
°C/LSB
Unipolar
Bipolar
0
-V
REF
/ 2
±0.01
24
V
REF
V
REF
/ 2
±1
V
µA
pF
SYMBOL
t
ACQ
t
CONV
f
CLK
(Note 5)
Internally clocked
Externally clocked
Externally clocked conversion (Note 5)
3.6
0.1
40
30
< 50
3.6
60
CONDITIONS
MIN
0.6
5.5
TYP
MAX
UNITS
µs
µs
MHz
%
ns
ps
MAX1020/MAX1022/MAX1057/MAX1058
V
REF2
V
_______________________________________________________________________________________
3
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
MAX1020/MAX1022/MAX1057/MAX1058
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= V
DVDD
= 2.7V to 3.6V (MAX1057), external reference V
REF
= 2.5V (MAX1057), V
AVDD
= V
DVDD
= 4.75V to 5.25V
(MAX1020/MAX1022/MAX1058), external reference V
REF
= 4.096V (MAX1020/MAX1022/MAX1058), f
CLK
= 3.6MHz (50% duty cycle),
T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
AVDD
= V
DVDD
= 3V (MAX1057), V
AVDD
= V
DVDD
= 5V
(MAX1020/MAX1022/MAX1058), T
A
= +25°C. Outputs are unloaded, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
V
REF
= 2.5V (MAX1057), f
SAMPLE
=
225ksps
REF1 Input Current (Note 9)
I
REF1
V
REF
= 4.096V
(MAX1020/MAX1022/MAX1058),
f
SAMPLE
= 225ksps
Acquisition between conversions
V
REF
= 2.5V (MAX1057), f
SAMPLE
=
225ksps
REF2 Input Current
I
REF2
V
REF
= 4.096V
(MAX1020/MAX1022/MAX1058),
f
SAMPLE
= 225ksps
Acquisition between conversions
DAC
DC ACCURACY (Note 10)
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Offset-Error Drift
Gain Error
Gain Temperature Coefficient
DAC OUTPUT
No load
Output-Voltage Range
10kΩ load to either rail
DC Output Impedance
Capacitive Load
(Note 11)
V
AVDD
= 2.7V, V
REF
= 2.5V (MAX1057),
gain error < 1%
Resistive Load to AGND
R
L
V
AVDD
= 4.75V, V
REF
= 4.096V
(MAX1020/MAX1022/MAX1058),
gain error < 2%
2000
Ω
500
0.1
0.5
1
V
AVDD
-
0.1
Ω
nF
0.02
V
AVDD
-
0.02
V
GE
(Note 8)
INL
DNL
V
OS
Guaranteed monotonic
(Note 8)
±3
±10
±1.25
±8
±10
10
±0.5
±1
±0.5
±10
Bits
LSB
LSB
mV
ppm of
FS/°C
LSB
ppm of
FS/°C
MIN
TYP
25
MAX
80
µA
UNITS
40
±0.01
25
80
±1
80
40
±0.01
80
±1
µA
4
_______________________________________________________________________________________
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= V
DVDD
= 2.7V to 3.6V (MAX1057), external reference V
REF
= 2.5V (MAX1057), V
AVDD
= V
DVDD
= 4.75V to 5.25V
(MAX1020/MAX1022/MAX1058), external reference V
REF
= 4.096V (MAX1020/MAX1022/MAX1058), f
CLK
= 3.6MHz (50% duty cycle),
T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
AVDD
= V
DVDD
= 3V (MAX1057), V
AVDD
= V
DVDD
= 5V
(MAX1020/MAX1022/MAX1058), T
A
= +25°C. Outputs are unloaded, unless otherwise noted.)
PARAMETER
Wake-Up Time (Note 12)
1kΩ Output Termination
100kΩ Output Termination
DYNAMIC PERFORMANCE (Notes 5, 13)
Output-Voltage Slew Rate
Output-Voltage Settling Time
Digital Feedthrough
Major Code Transition Glitch
Impulse
Output Noise (0.1Hz to 50MHz)
Output Noise (0.1Hz to 500kHz)
DAC-to-DAC Transition
Crosstalk
INTERNAL REFERENCE
REF1 Output Voltage (Note 8)
REF1 Temperature Coefficient
REF1 Short-Circuit Current
EXTERNAL-REFERENCE INPUT
REF1 Input Voltage Range
REF1 Input Impedance
V
REF1
R
REF1
DIGITAL INTERFACE
DIGITAL INPUTS (SCLK, DIN,
CS, CNVST, LDAC)
Input-Voltage High
Input-Voltage Low
Input Leakage Current
Input Capacitance
DIGITAL OUTPUT (DOUT) (Note 14)
Output-Voltage Low
V
OL
I
SINK
= 2mA
0.4
V
V
IH
V
IL
I
L
C
IN
V
DVDD
= 2.7V to 5.25V
V
DVDD
= 3.6V to 5.25V
V
DVDD
= 2.7V to 3.6V
±0.01
15
2.4
0.8
0.6
±10
V
V
µA
pF
REF modes 01, 10, and 11 (Note 4)
0.7
70
100
V
AVDD
130
V
kΩ
TC
REF
V
REF
= 2.5V
V
REF
= 4.096V
MAX1057
MAX1020/MAX1022/MAX1058
2.482
4.066
2.50
4.096
±30
0.39
0.63
2.518
4.126
V
ppm/°C
mA
SR
t
S
Positive and negative
To 1 LSB, 400 - C00 hex (Note 7)
Code 0, all digital inputs from 0 to V
DVDD
Between codes 2047 and 2048
From V
REF
Using internal reference
From V
REF
Using internal reference
3
2
0.5
4
660
720
260
320
0.5
5
V/µs
µs
nV
•
s
nV
•
s
µV
P-P
µV
P-P
nV
•
s
SYMBOL
CONDITIONS
From power-down mode, V
AVDD
= 5V
From power-down mode, V
AVDD
= 2.7V
Programmed in power-down mode
At wake-up or programmed in
power-down mode
MIN
TYP
25
21
1
100
MAX
UNITS
µs
kΩ
kΩ
MAX1020/MAX1022/MAX1057/MAX1058
_______________________________________________________________________________________
5
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