MAX1358B：16-Bit, Data-Acquisition System with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

The MAX1358B smart data-acquisition system (DAS) is based on a 16-bit, sigma-delta analog-to-digital converter (ADC) and system-support functionality for a microprocessor (µP)-based system. This device integrates an ADC, DACs, operational amplifiers, internal selectable-voltage reference, temperature sensors, analog switches, a 32kHz oscillator, a real-time clock (RTC) with alarm, a high-frequency-locked loop (FLL) clock, four user-programmable I/Os, an interrupt generator, and 1.8V and 2.7V voltage monitors in a single chip. The MAX1358B has dual 10:1 differential input multiplexers (muxes) that accept signal levels from 0 to AVDD. An on-chip 1x to 8x programmable-gain amplifier (PGA) allows measuring low-level signals and reduces external circuitry required. The MAX1358B operates from a single +1.8V to +3.6V supply and consumes only 1.15mA in normal mode and only 3µA in sleep mode. The MAX1358B has two DACs with one uncommitted op amp. The serial interface is compatible with either SPI™/QSPI™ or MICROWIRE™, and is used to power up, configure, and check the status of all functional blocks. The MAX1358B is available in a space-saving, 40-pin TQFN package and is specified over the commercial (0°C to +70°C) and the extended (-40°C to +85°C) temperature ranges.

Key Features

+1.8V to +3.6V Single-Supply Operation
Multichannel, 16-Bit, Sigma-Delta ADC
- 10sps to 477sps Programmable Conversion Rate
- Self- and System Offset and Gain Calibration
- PGA with Gains of 1, 2, 4, or 8
- Unipolar and Bipolar Modes
- 10-Input Differential Multiplexer
10-Bit Force-Sense DACs
Uncommitted Op Amps
Dual SPDT and SPST Analog Switches
Selectable References
- 1.25V, 2.048V, and 2.5V
Internal Charge Pump
System Support
- RTC and Alarm Register
- Internal/External Temperature Sensor
- Internal Oscillator with Clock Output
- User-Programmable I/O and Interrupt Generator
- VDD Monitors
SPI/QSPI/MICROWIRE, 4-Wire Serial Interface
Space-Saving (6mm x 6mm x 0.8mm), 40-Pin TQFN Package

MAX1358B: Functional Diagram

Applications/Uses

Battery-Powered and Portable Devices
Data-Acquisition Systems
Electrochemical and Optical Sensors
Industrial Control
Medical Instruments

DataSheet

title	Download file
MAX1358B Data Sheet	MAX1358B.pdf

Parametrics

Part Number	Resolution (bits)	Input Chan.	Conv. Rate (ksps)	ADC Architecture	Data Bus	Diff/S.E. Input	Internal V_REF (V)	External V_REF (V)	External V_REF (V)	Unipolar V_IN (V)	Bipolar V_IN (±V)	INL (±LSB)	Package/Pins	Budgetary Price
Part Number	ADC	Input Chan.	max	ADC Architecture	Data Bus	Diff/S.E. Input	nominal	min	max	max	max	INL (±LSB)	Package/Pins	See Notes
MAX1358B	16	2	0.512	Sigma-Delta	SPI	Diff. Only	2.5	1	3.6	2.5	2.5	2	TQFN/40	$10.79 @1k

Part Number	Sensing Element	PGA Gain	Calibration Method	Output Type	I_CC (mA)	Interface	DACs/ADCs	V_SUPPLY (V)	Package/Pins	Budgetary Price
Part Number	Sensing Element	PGA Gain	Calibration Method	Output Type	typ	Interface	DACs/ADCs	V_SUPPLY (V)	Package/Pins	See Notes
MAX1358B	Amperometric Cell (Blood Glucose)	1 to 8 (4 gains)	External microcontroller	Digital	1.15	SPI	2 10-bit DACs 16-bit ADC	1.8 to 3.6	TQFN/40	$10.79 @1k

Design kits & evaluation modules

MAX1358EVKIT

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX1358BETL	No Longer Available	MAX1358BETL+	TQFN,;40 pin;37.2 mm²	-40°C to +85°C	No
MAX1358BETL+	Active		TQFN,;40 pin;37.2 mm²	-40°C to +85°C	Lead Free
MAX1358BETL+T	Active		TQFN,;40 pin;37.2 mm²	-40°C to +85°C	Lead Free
MAX1358BETL+TW	Active		TQFN,;40 pin;37.2 mm²	-40°C to +85°C	Lead Free
MAX1358BETL+W	Active		TQFN,;40 pin;37.2 mm²	-40°C to +85°C	Lead Free
MAX1358BETL-T	No Longer Available	MAX1358BETL+T	QFN;40 pin	-40°C to +85°C	See data sheet

MAX1358B.pdf MAX1358B