MAX11661：500ksps, Low-Power, Serial 12-/10-/8-Bit ADCs

Small, Low-Power, SPI, 1-/2-Channel, 500ksps ADCs

The MAX11661−MAX11666 are 12-/10-/8-bit, compact, low-power, successive approximation analog-to-digital converters (ADCs). These high-performance ADCs include a high-dynamic range sample-and-hold and a high-speed serial interface. These ADCs accept a full-scale input from 0V to the power supply or to the reference voltage. The MAX11662/MAX11664/MAX11666 feature dual, single-ended analog inputs connected to the ADC core using a 2:1 MUX. The devices also include a separate supply input for data interface and a dedicated input for reference voltage. In contrast, the single-channel devices generate the reference voltage internally from the power supply. These ADCs operate from a 2.2V to 3.6V supply and consume only 3.3mW. The devices include full powerdown mode and fast wake-up for optimal power management and a high-speed 3-wire serial interface. The 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 minimal space. These ADCs are available in a 10-pin µMAX® package, and a 6-pin SOT23 package. These devices operate over the -40°C to +125°C temperature range.

Key Features

500ksps Conversion Rate, No Pipeline Delay
12-/10-/8-Bit Resolution
1-/2-Channel, Single-Ended Analog Inputs
Low-Noise 73dB SNR
Variable I/O: 1.5V to 3.6V (Dual-Channel Only)
- Allows the Serial Interface to Connect Directly to 1.5V, 1.8V, 2.5V, or 3V Digital Systems
2.2V to 3.6V Supply Voltage
Low Power
- 3.3mW
- Very Low Power Consumption at 8µA/ksps
External Reference Input (Dual-Channel Devices Only)
1.3µA Power-Down Current
SPI-/QSPI-/MICROWIRE-Compatible Serial Interface
10-Pin, 3mm x 5mm µMAX Package
6-Pin, 2.8mm x 2.9mm SOT23 Package
Wide -40°C to +125°C Operation

MAX11661, MAX11662, MAX11663, MAX11664, MAX11665, MAX11666: Typical Application Circuit

Applications/Uses

Automotive Systems
Battery-Operated Systems
Communication Systems
Data Acquisition
Medical Instrumentation
Portable Data Logging

DataSheet

title	Download file
MAX11661-MAX11666 Data Sheet	MAX11661-MAX11666.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)	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	SNR (dB)	THD (dB)	INL (±LSB)	Package/Pins	See Notes
MAX11661	8	1	500	SAR	SPI	S.E. Only	-	-	3.6	49.5	-70	0.25	SOT/6	$0.69 @1k
MAX11662	8	2					1	3.65		49.5	-70	0.25	µMAX-EP/10	$0.98 @1k
MAX11663	10	1					-	-		61.5	-85	0.5	SOT/6	$1.07 @1k
MAX11664	10	2					1	3.65		61.5	-85	0.5	µMAX-EP/10	$1.05 @1k
MAX11665	12	1					-	-		73	-85	1	SOT/6	$1.18 @1k
MAX11666	12	2					1	3.65		73	-85	1	µMAX-EP/10	$1.39 @1k

Design kits & evaluation modules

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX11661AUT+	Active		SOT,;6 pin;9 mm²	-40°C to +125°C	Lead Free
MAX11661AUT+T	Active		SOT,;6 pin;9 mm²	-40°C to +125°C	Lead Free

MAX11661-MAX11666.pdf MAX11666

MAX11661-MAX11666.pdf MAX11664