MAX1220, MAX1257, MAX1258 12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports

Description

The MAX1220/MAX1257/MAX1258 integrate a 12-bit, multichannel, analog-to-digital converter (ADC), and a 12-bit, octal, digital-to-analog converter (DAC) in a single IC. These 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 8 and 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) for both the ADC and DAC. Programmable reference modes 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 power consumption 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 voltage from +2.7V to +3.6V (MAX1257) and from +4.75V to +5.25V (MAX1220/MAX1258). These devices consume 2.5mA at 225ksps throughput, only 22µA at 1ksp throughput, and under 0.2µA in the shutdown mode. The MAX1257/MAX1258 feature 12 GPIOs, while the MAX1220 offers four GPIOs that can be configured as inputs or outputs.

The MAX1220 is available in a 36-pin thin QFN package. The MAX1257/MAX1258 are available in 48-pin thin QFN package. All devices are specified over the -40°C to +85°C temperature range.

Key Features

Applications/Uses

12-Bit, 225ksps ADC
- Analog Multiplexer with True-Differential Track/Hold (T/H)
- 16 Single-Ended Channels or 8 Differential Channels (Unipolar or Bipolar) (MAX1257/MAX1258)
- Eight Single-Ended Channels or Four Differential Channels (Unipolar or Bipolar) (MAX1220)
- Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL
12-Bit, Octal, 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
Digital Supply: +2.7V to AV_DD
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)

	Base-Station Control Loops
	Controls for Optical Components
	Data Acquisition Systems
	System Supervision and Control

Key Specifications: Precision ADCs (< 5Msps)

Part Number

ADC Resolution (Bits)

Input Channels

Conv. Rate (ksps)

Max. Conv. Time (µs)

Data Bus (Bits)

Ref. (V)

Diff. In

Supply Voltage (V)

Typ. Supply Current (mA)

Typ. Power (mW)

Standby Mode

Package

Price^**

MAX1220

300

3.5

Serial

Ext.
Int.+4.096

Yes

5.3

26.5

Yes

TQFN/36

$13.79 @ 1k

MAX1257

Ext.
Int.+2.5

3
3.3

6.9

TQFN/48

$14.49 @ 1k

MAX1258

Ext.
Int.+4.096

12.5

TQFN/48

$14.49 @ 1k

See All Precision ADCs (< 5Msps) (375)

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.

Reliability Reports


		Reliability Report: MAX1220.pdf

		Show FIT data for:

		Request Reliability Report for:

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-13 of 13

MAX1220

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX1220BETX

TQFN;36 pin;37 mm²
Outline Drawing: 21-0141 (PDF)
Land Pattern: 90-0050 (PDF)
Use pkgcode/variation: T3666-3*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1220BETX-T

Land Pattern: Not Available

-40°C to +85°C

See data sheet

MAX1220BETX+

TQFN;36 pin;37 mm²
Outline Drawing: 21-0141 (PDF)
Land Pattern: 90-0050 (PDF)
Use pkgcode/variation: T3666+3*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1220BETX+T

Land Pattern: Not Available

-40°C to +85°C

See data sheet

MAX1257

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX1257EVKIT

Land Pattern: Not Available

See data sheet

MAX1257BETM

TQFN;48 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0132 (PDF)
Use pkgcode/variation: T4877-6*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1257BETM-T

Land Pattern: Not Available

-40°C to +85°C

See data sheet

MAX1257BETM+

TQFN;48 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0132 (PDF)
Use pkgcode/variation: T4877+6*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1257BETM+T

Land Pattern: Not Available

-40°C to +85°C

See data sheet

MAX1258

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX1258BETM

TQFN;48 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0132 (PDF)
Use pkgcode/variation: T4877-6*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1258BETM-T

TQFN;48 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0132 (PDF)
Use pkgcode/variation: T4877-6*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1258BETM+

TQFN;48 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0132 (PDF)
Use pkgcode/variation: T4877+6*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1258BETM+T

TQFN;48 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0132 (PDF)
Use pkgcode/variation: T4877+6*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis