MAX11129：3Msps, Low-Power, Serial 12-/10-Bit, 8-/16-Channel ADCs

Most Flexible Family of Pin- and Software-Compatible, 3Msps, Multichannel ADCs with External Reference

The MAX11129–MAX11132 are 12-/10-bit with external reference and industry-leading 1.5MHz, full linear bandwidth, high speed, low-power, serial output successive approximation register (SAR) analog-to-digital converters (ADCs). The MAX11129–MAX11132 include both internal and external clock modes. These devices feature scan mode in both internal and external clock modes. The internal clock mode features internal averaging to increase SNR. The external clock mode features the SampleSet™ technology, a user-programmable analog input channel sequencer. The SampleSet approach provides greater sequencing flexibility for multichannel applications while alleviating significant microcontroller or DSP (controlling unit) communication overhead. The internal clock mode features an integrated FIFO allowing data to be sampled at high speeds and then held for readout at any time or at a lower clock rate. Internal averaging is also supported in this mode improving SNR for noisy input signals. The devices feature analog input channels that can be configured to be single-ended inputs, fully differential pairs, or pseudo-differential inputs with respect to one common input. The MAX11129–MAX11132 operate from a 2.35V to 3.6V supply and consume only 15.2mW at 3Msps. The MAX11129–MAX11132 include AutoShutdown™, fast wake-up, and a high-speed 3-wire serial interface. The devices feature full power-down mode for optimal power management. The 48MHz, 3-wire serial interface directly connects to SPI, QSPI™, and MICROWIRE® devices without external logic. Excellent dynamic performance, low voltage, low power, ease of use, and small package size make these converters ideal for portable battery-powered data-acquisition applications, and for other applications that demand low power consumption and small space. The MAX11129–MAX11132 are available in 28-pin, 5mm x 5mm, TQFN packages and the MAX11131 is available in a 28-pin TSSOP package. All devices operate over the -40°C to +125°C temperature range.

Key Features

Scan Modes, Internal Averaging, and Internal Clock
16-Entry First-In-First-Out (FIFO)
SampleSet: User-Defined Channel Sequence with Maximum Length of 256
Analog Multiplexer with True Differential Track/Hold
- 16-/8-Channel Single-Ended
- 8-/4-Channel Fully Differential Pairs
- 15-/8-Channel Pseudo-Differential Relative to a Common Input
Two Software-Selectable Bipolar Input Ranges: ±VREF/2, ±VREF
Flexible Input Configuration Across All Channels
High Accuracy
- ±1 LSB INL, ±1 LSB DNL, No Missing Codes Over Temperature Range
70dB SINAD Guaranteed at 500kHz Input Frequency
1.5V to 3.6V Wide Range I/O Supply
- Allows the Serial Interface to Connect Directly to 1.8V, 2.5V, or 3.3V Digital Systems
2.35V to 3.6V Supply Voltage
Longer Battery Life for Portable Applications
- Low Power
- 15.2mW at 3Msps with 3V Supplies
- 2µA Full-Shutdown Current
External Differential Reference (1V to VDD)
48MHz, 3-Wire SPI-/QSPI-/MICROWIRE-/DSP-Compatible Serial Interface
Wide -40°C to +125°C Operation
Space-Saving, 28-Pin, 5mm x 5mm TQFN Packages
3Msps Conversion Rate, No Pipeline Delay
12-/10-Bit Resolution

MAX11129, MAX11130, MAX11131, MAX11132: Typical Application Circuit

Applications/Uses

Battery-Powered Instruments
High-Speed Closed-Loop Systems
High-Speed Data Acquisition Systems
Industrial Control Systems
Medical Instrumentation
Portable Systems

DataSheet

title	Download file
MAX11129-MAX11132 Data Sheet	MAX11129-MAX11132.pdf

Parametrics

Part Number	Resolution (bits)	Input Chan.	Conv. Rate (ksps)	ADC Architecture	Data Bus	Diff/S.E. Input	External V_REF (V)	External V_REF (V)	Unipolar V_IN (V)	Bipolar V_IN (±V)	SNR (dB)	THD (dB)	INL (±LSB)	Package/Pins	Budgetary Price
Part Number	ADC	Input Chan.	max	ADC Architecture	Data Bus	Diff/S.E. Input	min	max	max	max	SNR (dB)	THD (dB)	INL (±LSB)	Package/Pins	See Notes
MAX11129	10	16	3000	SAR	SPI	Both	1	3.6	3.6	3.6	61.5	-86	0.4	TQFN/28	$5.95 @1k
MAX11130	10	8			SPI						61.5	-86	0.4	TQFN/28	$4.95 @1k
MAX11131	12	16			SPI						72.3	-88	1	TQFN/28 TSSOP-EP/28	$8.25 @1k
MAX11132	12	8			Microwire QSPI SPI						72.3	-88	1	TQFN/28	$6.95 @1k