Document
19-5036; Rev 0; 10/09
KIT ATION EVALU E L B A AVAIL
4-/6-/8-Channel, 16-Bit, Simultaneous-Sampling ADCs
General Description Features
♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ 4-/6-/8-Channel 16-Bit ADC Single Analog and Digital Supply High-Impedance Inputs Up to 1GΩ On-Chip T/H Circuit for Each Channel Fast 3µs Conversion Time High Throughput: 250ksps for All 8 Channels 16-Bit, High-Speed, Parallel Interface Internal Clocked Conversions 10ns Aperture Delay 100ps Channel-to-Channel T/H Matching Low Drift, Accurate 4.096V Internal Reference Providing an Input Range of ±5V ♦ External Reference Range of 3.0V to 4.25V, Allowing Full-Scale Input Ranges of ±4.0V to ±5.2V ♦ 56-Pin TQFN Package (8mm x 8mm) ♦ Evaluation Kit Available
MAX11044/MAX11045/MAX11046
The MAX11044/MAX11045/MAX11046 16-bit ADCs offer 4, 6, or 8 independent input channels. Featuring independent track and hold (T/H) and SAR circuitry, these parts provide simultaneous sampling at 250ksps for each channel. The MAX11044/MAX11045/MAX11046 accept a ±5V input. All inputs are overrange protected with internal ±20mA input clamps providing overrange protection with a simple external resistor. Other features include a 4MHz T/H input bandwidth, internal clock, and internal or external reference. A 20MHz, 16-bit, bidirectional, parallel interface provides the conversion results and accepts digital configuration inputs. The MAX11044/MAX11045/MAX11046 operate with a 4.75V to 5.25V analog supply and a separate flexible 2.7V to 5.25V digital supply for interfacing with the host without a level shifter. The MAX11044/MAX11045/MAX11046 are available in a 56-pin TQFN package and operate over the extended -40°C to +85°C temperature range.
†
Ordering Information
PART MAX11044ETN+ MAX11045ETN+ MAX11046ETN+ PIN-PACKAGE 56 TQFN-EP* 56 TQFN-EP* 56 TQFN-EP* CHANNELS 4 6 8
Applications
Automatic Test Equipment Power-Factor Monitoring and Correction Power-Grid Protection Multiphase Motor Control Vibration and Waveform Analysis
†Patent pending.
Note: All devices are specified over the -40°C to +85°C operating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad.
www.DataSheet4U.com
AVDD
Functional Diagram
AGNDS AGND REFIO AVDD CH6 CH5 CH4
Pin Configuration
AGND AVDD RDC CH3 CH2 CH1 28 RDC 27 AGNDS 26 CH0 25 AGND 24 AVDD 23 AGNDS 22 RDC 21 DGND 20 DVDD 19 SHDN 18 CONVST 17 EOC *EP 16 DB0 15 DB1 1 DB13 2 DB12 3 DB11 4 DB10 5 DB9 6 DB8 7 DGND 8 DVDD 9 DB7 10 11 12 13 14 DB6 DB5 DB4 DB3 DB2
TOP VIEW
DVDD DB15
42 41 40 39 38 37 36 35 34 33 32 31 30 29 RDC 43 AGNDS 44
BIDIRECTIONAL DRIVERS
CH0
8 x 16-BIT REGISTERS
CLAMP
S/H
16-BIT ADC
DB4 DB3 DB0
CH7 45 AGND 46 AVDD 47 AGNDS 48 RDC 49 DGND 50
CH7
CLAMP
S/H
16-BIT ADC
AGNDs
CONFIGURATION REGISTERS
WR RD CS CONVST SHDN EOC
DVDD 51 WR 52 CS 53 RD 54 DB15 55 DB14 56
MAX11044 MAX11045 MAX11046
AGND
MAX11044 MAX11045 MAX11046
INT REF BANDGAP REFERENCE REF BUF EXT REF
INTERFACE AND CONTROL
+
RDC DGND
REFIO
TQFN 8mm x 8mm
________________________________________________________________ Maxim Integrated Products
AGNDS
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
4-/6-/8-Channel, 16-Bit, Simultaneous-Sampling ADCs MAX11044/MAX11045/MAX11046
ABSOLUTE MAXIMUM RATINGS
AVDD to AGND ........................................................-0.3V to +6V DVDD to AGND and DGND .....................................-0.3V to +6V DGND to AGND.....................................................-0.3V to +0.3V AGNDS to AGND...................................................-0.3V to +0.3V CH0–CH7 to AGND ...............................................-7.5V to +7.5V REFIO, RDC to AGND ..................................-0.3V to the lower of (AVDD + 0.3V) and +6V EOC, WR, RD, CS, CONVST to AGND.........-0.3V to the lower of (DVDD + 0.3V) and +6V DB0–DB15 to AGND ....................................-0.3V to the lower of (DVDD + 0.3V) and +6V Maximum Current into Any Pin Except AVDD, DVDD, AGND, DGND ...........................................................................±50mA Continuous Power Dissipation 56-Pin TQFN (derate 36mW/°C above +70°C) ..........2222mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(AVDD = +4.75V to +5.25V, DVDD = +2.70.