My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MX7828KCWI+T
- Part No.:
- MX7828KCWI+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MX7828KCWI+T.pdf
- Description:
- IC ADC 8BIT FLASH 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MX7828KCWI+T from Maxim Integrated is an 8-channel, 8-bit CMOS analog-to-digital converter with 2.5 µs conversion time, single +5V supply operation, built-in track/hold, and 0V to +5V analog input range. It serves as a high-speed data acquisition front-end in real-time signal processing systems requiring multi-channel sampling without external sample-and-hold circuitry.
For engineers reviewing the MX7828KCWI+T datasheet, MX7828KCWI+T pinout, MX7828KCWI+T application, or MX7828KCWI+T equivalent, key selection considerations include its 8-channel multiplexer architecture, Mode 0/Mode 1 digital interface flexibility, ±1/2 LSB total unadjusted error, and compatibility with AD7828-based legacy designs.
Technical Context
The MX7828KCWI+T employs a half-flash architecture with two 4-bit flash ADC sections and an internal DAC to generate 8-bit results using 31 comparators. Its analog input stage includes integrated track/hold functionality and supports up to 400 kHz aggregate sampling rate (50 kHz per channel).
Digital interface operates in either Mode 0 (WAIT-state compatible, INT- and RDY-driven) or Mode 1 (non-WAIT, pipelined read), with CS and RD as sole control inputs. Reference configuration uses external VREF+ and VREF− pins, supporting full-scale spans from 1 V to 5 V, with no internal reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes for digitizing analog signals within defined reference span. |
| Conversion Time | 2.5 µs - enables 400 kHz maximum aggregate sampling rate across all 8 channels. |
| Total Unadjusted Error | ±1/2 LSB - ensures monotonicity and no missing codes over temperature and supply variation. |
| Analog Input Range | 0 V to +5 V - compatible with standard TTL/CMOS logic-level sensor outputs and op-amp drivers. |
| Supply Voltage | +5 V ±5% - operates directly from common system rail without regulation overhead. |
| Input Capacitance | 45 pF - defines required source impedance ≤100 Ω for <1 µs settling to avoid acquisition errors. |
| Reference Inputs | VREF+ and VREF− pins - allow user-defined full-scale voltage (e.g., 2.5 V, 5 V) with GND-referenced or floating configurations. |
Pinout & Package
MX7828KCWI+T is housed in a 28-pin Wide SO (Small Outline) package, 0.300-inch body width, with gull-wing leads and standard JEDEC MO-013AC footprint. Pin 1 marked by notch or dot; pin count and spacing comply with industry-standard 28-SOIC mechanical specifications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1–AIN8 | Analog input channels | Eight single-ended inputs selectable via A0/A1/A2 address lines; each presents 45 pF capacitance and ±3 µA leakage. |
| A0, A1, A2 | Multiplexer address inputs | Binary-encoded channel selection (000 = AIN1, 111 = AIN8); TTL-compatible with 0.8 V/2.4 V thresholds. |
| CS | Chip-select input | Active-low enable; must be low to latch address and initiate conversion; controls device bus contention. |
| RD | Read control input | Active-low signal that triggers conversion start (Mode 0) or reads prior result (Mode 1); defines interface timing mode. |
| INT | Interrupt output | Open-drain, active-low flag signaling end of conversion; used for interrupt-driven data capture. |
| RDY | Ready output | Open-drain, active-low status tied to microprocessor WAIT input; goes high-impedance at conversion completion. |
| DB0–DB7 | Three-state data outputs | Latched 8-bit parallel output bus; high-impedance until conversion completes; compatible with 5 V microprocessor data buses. |
| VREF+, VREF− | Reference span terminals | Define zero-code (VREF−) and full-scale (VREF+) voltages; support external references or power-supply-derived scaling. |
| VDD, GND | Power supply pins | +5 V supply and ground return; require 47 µF electrolytic + 0.1 µF ceramic bypassing at VDD for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated track/hold | Eliminates need for external S/H circuitry, reducing BOM count and board area in multi-channel DAQ systems. |
| Two-mode digital interface | Supports both WAIT-state microprocessors (Mode 0) and non-WAIT architectures (Mode 1), enabling reuse across legacy and modern controller platforms. |
| No external clock required | Self-timed conversion engine removes clock distribution complexity and jitter sensitivity in timing-critical applications. |
| Pin compatibility with AD7828 | Enables drop-in replacement in existing Analog Devices-based designs without PCB revision or layout changes. |
| Single-supply +5 V operation | Reduces power subsystem complexity versus dual-supply ADCs; simplifies system-level power design and thermal management. |
Applications
| Telecom Channel Monitoring | Digital Signal Processing Front-End |
|---|---|
Use Scenario: Real-time monitoring of 8 voice-band channels in a TDM-based telecom line card. IC Role / Device Role / Timing Role: Simultaneous sampling of filtered analog signals prior to DSP-based echo cancellation and compression. Use Value: 2.5 µs conversion time supports 50 kHz per-channel sampling, satisfying Nyquist for 10 kHz voice bandwidth while maintaining channel synchronization. |
Use Scenario: Multi-sensor data acquisition in an industrial vibration analysis system with 8 accelerometers. IC Role / Device Role / Timing Role: High-fidelity analog front-end converting conditioned sensor outputs into time-aligned digital streams for FFT computation. Use Value: Built-in track/hold and ±1/2 LSB accuracy ensure minimal inter-channel skew and distortion during burst-mode acquisition sequences. |
| High-Speed Servo Control Loop | Audio Instrumentation Sampling |
Use Scenario: Closed-loop position feedback in a CNC motion controller using 8 analog encoder or resolver outputs. IC Role / Device Role / Timing Role: Real-time digitization of motor phase currents and position signals for PWM update at ≥20 kHz loop rates. Use Value: Mode 1 pipelined interface allows continuous back-to-back conversions with 2.5 µs inter-conversion delay, sustaining deterministic control latency. |
Use Scenario: Multi-track audio test equipment capturing simultaneous line-level inputs for spectral analysis. IC Role / Device Role / Timing Role: Synchronized 8-channel sampling of balanced audio signals with DC-coupled input path capability. Use Value: 0 V to +5 V input range and 45 pF input capacitance permit direct connection to op-amp buffers without attenuation or AC coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit, 8-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7828BNZ | Same pinout, identical 2.5 µs conversion time and 8-bit resolution; ±1 LSB total unadjusted error vs. MX7828KCWI+T's ±1/2 LSB. | Higher error tolerance acceptable in cost-sensitive industrial monitoring where calibration compensates offset. | Select AD7828BNZ when sourcing continuity for legacy Analog Devices designs or where ±1 LSB accuracy suffices. |
| MAX158CNG+ | Same manufacturer, includes internal 2.5 V reference and operates from +5 V; differs in pinout (28-pin PDIP), lacks VREF+/VREF− pins. | Requires no external reference but mandates use of internal reference; unsuitable for variable full-scale applications. | Choose MAX158CNG+ only if internal reference simplifies design and 28-PDIP packaging aligns with mechanical constraints. |
Compared with AD7828BNZ, MX7828KCWI+T offers tighter ±1/2 LSB accuracy and wider operating temperature range (0°C to +70°C vs. −40°C to +85°C for AD7828BNZ), while MAX158CNG+ trades reference flexibility for integration-making MX7828KCWI+T optimal for precision, externally referenced, wide-SO footprint applications.
Availability
MX7828KCWI+T is available at Aetrix Electronics and suitable for high-speed data acquisition, telecommunications infrastructure, and industrial servo control requiring stable component supply across extended production lifecycles.
Supply support for MX7828KCWI+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The MX7828KCWI+T belongs to Maxim's legacy high-speed ADC product line, designed specifically for cost-effective, pin-compatible upgrades to AD7828-based systems while delivering improved accuracy and simplified interface timing.
FAQ
What is the operating temperature range for MX7828KCWI+T?
The MX7828KCWI+T is specified for operation from 0°C to +70°C. This commercial-grade temperature range is confirmed in the Ordering Information table, where "KCWI" suffix denotes the 0°C to +70°C grade in 28-pin Wide SO package. It does not support extended or military temperature ranges.
Does MX7828KCWI+T include an internal voltage reference?
No, MX7828KCWI+T does not include an internal voltage reference. Unlike the MAX158, it requires external VREF+ and VREF− connections to define the analog input range. The "MX" prefix and absence of REF OUT pin in its pinout confirm this external-reference architecture.
Is MX7828KCWI+T pin-compatible with AD7828?
Yes, MX7828KCWI+T is explicitly stated as pin-compatible with Analog Devices' AD7828. The General Description confirms this compatibility, and the Pin Configurations diagram shows identical pin functions and numbering between MX7828 and AD7828 in the same package types.
What digital interface modes does MX7828KCWI+T support?
MX7828KCWI+T supports two digital interface modes: Mode 0 (WAIT-state compatible, using RDY and INT for handshaking) and Mode 1 (pipelined, non-WAIT operation). Mode selection is determined solely by RD pulse width, with no configuration register or external hardware required.
What is the maximum recommended source impedance for analog inputs on MX7828KCWI+T?
The maximum recommended source impedance for MX7828KCWI+T analog inputs is 100 Ω. This value is derived from the input RC model (45 pF capacitance + ~2.5 kΩ effective switch resistance), where higher impedances cause incomplete settling within the 1 µs internal acquisition window, leading to gain and linearity errors.
MX7828KCWI+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 400k
- Number of Inputs:
- 8
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Flash
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- Selectable Address
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MX7828KCWI+T FAQ
1.How can I place an order for MX7828KCWI+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MX7828KCWI+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MX7828KCWI+T reliable?
The price and inventory of MX7828KCWI+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX7828KCWI+T is usually 5 days.
3.What payment methods are accepted for MX7828KCWI+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX7828KCWI+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX7828KCWI+T?
MX7828KCWI+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX7828KCWI+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MX7828KCWI+T?
For technical support, including MX7828KCWI+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX7828KCWI+T requirements.
6.How does Aetrix verify that MX7828KCWI+T is sourced from the original manufacturer or authorized distributors?
All MX7828KCWI+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MX7828KCWI+T meets industry standards.
7.What is the process for return or replacement of MX7828KCWI+T?
All MX7828KCWI+T units undergo pre-shipment inspection (PSI). If there is an issue with MX7828KCWI+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MX7828KCWI+T part is unused and in its original packaging.
Return procedure for MX7828KCWI+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MX7828KCWI+T Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
