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MAX1021, MAX1043
10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports
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Status
Active: In Production.
Description
The MAX1021/MAX1043 integrate a multichannel, 10-bit, analog-to-digital converter (ADC) and a 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 serial interface. The ADC is available in an eight input-channel version. The DAC outputs settle within 2.0µs, and the ADC has a 225ksps conversion rate.
All devices include an internal reference (2.5V) to provide 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 processor requirements. The low glitch energy (4nV•s) and low digital feedthrough (0.5nV•s) of the integrated DACs make these devices ideal for digital control of fast-response closed-loop systems.
The devices are guaranteed to operate with a supply voltage from +2.7V to +5.25V. They consume 2.5mA at 225ksps throughput, only 22µA at 1ksps throughput, and under 0.2µA in the shutdown mode. The MAX1021/MAX1043 offer four GPIOs that can be configured as inputs or outputs.
The MAX1021/MAX1043 are available in 36-pin thin QFN packages. These devices are specified over the -40°C to +85°C temperature range.
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Data Sheet
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Key Features
- 10-Bit, 225ksps ADC
- Analog Multiplexer with True-Differential Track/Hold (T/H)
- Eight Single-Ended Channels or Four Differential Channels (Unipolar or Bipolar)
- Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL, No Missing Codes Over Temperature
- 10-Bit, Octal, 2µs Settling DAC (MAX1021)
- 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)
- 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
- Digital Supply: +2.7V to AVDD
- 25MHz, SPI/QSPI/MICROWIRE Serial Interface
- AutoShutdown Between Conversions
- Low-Power ADC
- 2.5mA at 225ksps
- 22µA at 1ksps
- 0.2µA at Shutdown
- Low-Power DAC: 1.5mA
- Evaluation Kit Available (Order MAX1258EVKIT)
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Applications/Uses
- Closed-Loop Controls for Optical Components and Base Stations
- Data Acquisition Systems
- System Supervision and Control
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Key Specifications:
| Precision ADCs (< 5Msps) |
| Part Number |
Resolution
(bits) |
Input Chan. |
Conv. Rate
(ksps) |
Data Bus
(bits) |
Diff/S.E. Input |
Internal VREF
(V) |
External VREF
(V) |
External VREF
(V) |
Unipolar VIN
(V) |
Bipolar VIN
(±V) |
SNR
(dB) |
SINAD
(dB) |
THD
(dB) |
SFDR
(dB) |
DNL
(±LSB) |
INL
(±LSB) |
Package/Pins |
Budgetary Price |
| ADC |
max |
nominal |
min |
max |
max |
max |
See Notes |
| MAX1043 |
10 |
8 |
300 |
SPI |
Both |
2.5 |
0.7 |
5.25 |
2.5 |
1.25 |
61 |
61 |
-70 |
66 |
0.5 |
0.5 |
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- |
| MAX1021 |
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$9.20 @1k |
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See All Precision ADCs (< 5Msps) (417)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Functional Diagram
Product Guides
Reliability Reports
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Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX1021BETX
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Active |
TQFN;36 pin;37.2 mm²
Outline Drawing:21-0141 (PDF)
Land Pattern: 90-0050 (PDF)
Use pkgcode/variation: T3666-3*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX1021BETX+
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Active |
TQFN;36 pin;37.2 mm²
Outline Drawing:21-0141 (PDF)
Land Pattern: 90-0050 (PDF)
Use pkgcode/variation: T3666+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1021BETX+T
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Active |
QFN;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX1021BETX-T
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Active |
QFN;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX1043BETX
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Active |
TQFN;36 pin;37.2 mm²
Outline Drawing:21-0141 (PDF)
Land Pattern: 90-0050 (PDF)
Use pkgcode/variation: T3666-3*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX1043BETX+
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Active |
TQFN;36 pin;37.2 mm²
Outline Drawing:21-0141 (PDF)
Land Pattern: 90-0050 (PDF)
Use pkgcode/variation: T3666+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1043BETX+T
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Active |
QFN;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX1043BETX-T
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Active |
QFN;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-4009
Rev 1;
2008-05-09
This page last modified: 2009-09-04
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