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MAX1274, MAX1275
1.8Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs
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Status
Description
The MAX1274/MAX1275 low-power, high-speed, serial-output, 12-bit, analog-to-digital converters (ADCs) operate at up to 1.8Msps. These devices feature true-differential inputs, offering better noise immunity, distortion improvements, and a wider dynamic range over single-ended inputs. A standard SPI™/QSPI™/MICROWIRE™ interface provides the clock necessary for conversion. These devices easily interface with standard digital signal processor (DSP) synchronous serial interfaces.
The MAX1274/MAX1275 operate from a single +4.75V to +5.25V supply voltage and require an external reference. The MAX1274 has a unipolar analog input, while the MAX1275 has a bipolar analog input. These devices feature a partial power-down mode and a full power-down mode for use between conversions, which lower the supply current to 1mA (typ) and 1µA (max), respectively. Also featured is a separate power-supply input (VL), which allows direct interfacing to +1.8V to VDD digital logic. The fast conversion speed, low-power dissipation, excellent AC performance, and DC accuracy (±1 LSB INL) make the MAX1274/MAX1275 ideal for industrial process control, motor control, and base-station applications.
The MAX1274/MAX1275 come in a 12-pin TQFN package, and are available in the extended (-40°C to +85°C) temperature range.
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Data Sheet
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Key Features
- 1.8Msps Sampling Rate
- Only 45mW (typ) Power Dissipation
- Only 1µA (max) Shutdown Current
- High-Speed, SPI-Compatible, 3-Wire Serial Interface
- 70dB S/(N + D) at 525kHz Input Frequency
- Internal True-Differential Track/Hold (T/H)
- External Reference
- No Pipeline Delays
- Small 12-Pin TQFN Package
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Applications/Uses
- Bill Validation
- Communications
- Data Acquisition
- Motor Control
- Portable Instrumentation
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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 |
External VREF
(V) |
External VREF
(V) |
Unipolar VIN
(V) |
Bipolar VIN
(±V) |
SINAD
(dB) |
THD
(dB) |
SFDR
(dB) |
DNL
(±LSB) |
INL
(±LSB) |
Package/Pins |
Budgetary Price |
| ADC |
max |
min |
max |
max |
max |
See Notes |
| MAX1274 |
12 |
1 |
1800 |
SPI |
Diff. Only |
1 |
5.25 |
4.096 |
2.048 |
70 |
-80 |
83 |
1.25 |
1.75 |
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$4.55 @1k |
| MAX1275 |
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$4.55 @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
 Typical Operating Circuit
Product Guides
Reliability Reports
| Show FIT data for: |
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| Request Reliability Report for: |
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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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Recommended Replacement |
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX1274AETC+
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Active |
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TQFN;12 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0067 (PDF)
Use pkgcode/variation: T1244+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1274AETC+T
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Active |
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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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| MAX1274BCTC
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N/A |
No Longer Available |
MAX1274BETC+
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TQFN;12 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0067 (PDF)
Use pkgcode/variation: T1244-3*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX1274BCTC-T
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N/A |
No Longer Available |
MAX1274BETC+
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QFN;
Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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| MAX1274BETC
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Active |
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TQFN;12 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0067 (PDF)
Use pkgcode/variation: T1244-3*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX1274BETC+
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Active |
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TQFN;12 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0067 (PDF)
Use pkgcode/variation: T1244+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1274BETC+T
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Active |
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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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| MAX1274BETC-T
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Active |
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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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| MAX1274CTC
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N/A |
No Longer Available |
MAX1274ETC
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THNQFN;
Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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| MAX1274ETC
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Active |
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THNQFN;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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Part Number
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Free
Sample |
Buy |
Status
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Recommended Replacement |
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX1275AETC+
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Active |
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TQFN;12 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0067 (PDF)
Use pkgcode/variation: T1244+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1275AETC+T
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Active |
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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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| MAX1275BCTC
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N/A |
No Longer Available |
MAX1275BETC+
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TQFN;12 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0067 (PDF)
Use pkgcode/variation: T1244-3*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX1275BCTC-T
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N/A |
No Longer Available |
MAX1275BETC+
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QFN;
Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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| MAX1275BETC+
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Active |
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TQFN;12 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0067 (PDF)
Use pkgcode/variation: T1244+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1275BETC+T
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Active |
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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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| MAX1275CTC
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N/A |
No Longer Available |
MAX1275ETC
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THNQFN;
Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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| MAX1275ETC
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Active |
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THNQFN;
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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Similar Products by Function
| MAX1072, MAX1075 |
1.8Msps, Single-Supply, Low-Power, True-Differential, 10-Bit ADCs |
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More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-3158
Rev 1;
2009-08-06
This page last modified: 2010-05-12
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