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Analog Devices Inc./Maxim Integrated MX7672KP05+
- Part No.:
- MX7672KP05+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
MX7672KP05+.pdf
- Description:
- IC ADC 12BIT HS 28-PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,775
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Product details
Overview
MX7672KP05+ from Maxim Integrated is a 12-bit, high-speed BiCMOS analog-to-digital converter (ADC) with 5µs maximum conversion time, ±1 LSB integral nonlinearity, and buffered -5V reference input. It operates from +5V and -12V supplies, supports pin-selectable 0 to +5V / 0 to +10V / ±5V input ranges, and delivers 125ns bus-access time - ideal for high-speed data-acquisition cards in telecom and radar signal processing.
For engineers reviewing the MX7672KP05+ datasheet, MX7672KP05+ pinout, MX7672KP05+ application, or MX7672KP05+ equivalent, key selection criteria include its 5µs conversion speed grade, PLCC-28 package compatibility, ±1 LSB INL at 0°C to +70°C, external -5V reference requirement, and synchronous/asynchronous clock interface flexibility.
Technical Context
The MX7672KP05+ uses successive approximation register (SAR) architecture with internal DAC and comparator, requiring external -5V reference voltage applied to VREF. Its analog inputs AIN1 and AIN2 connect through 5kΩ resistors to the comparator, enabling unipolar or bipolar operation via pin configuration.
Conversion is initiated by simultaneous low assertion of CS and RD; BUSY goes low during conversion and returns high upon completion. The device supports both external TTL-compatible clock (CLKIN) and crystal-based internal oscillator (CLKIN–CLKOUT), with timing tightly coupled to CLKIN falling edges for deterministic 12.5-cycle synchronous operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital codes over full-scale range |
| Max Conversion Time | 5 µs - guaranteed worst-case latency under 2.5MHz clock, synchronous mode |
| Integral Nonlinearity (INL) | ±1 LSB - ensures monotonicity and ≤0.024% full-scale error across temperature |
| Reference Input | -5V external - requires precision negative reference; buffered input draws only ±3µA |
| Supply Voltages | +5V (VDD) and -12V (VSS) - dual-rail BiCMOS operation with specified absolute max ratings |
| Data Access Time | 125 ns - enables direct interfacing with 8MHz+ microprocessor buses without wait states |
| Input Range Options | Pin-selectable 0 to +5V, 0 to +10V, or ±5V - configurable via external resistor network per Figure 15 |
Pinout & Package
MX7672KP05+ is housed in a 28-pin plastic leaded chip carrier (PLCC) package with J-lead configuration, RoHS-compliant (denoted by '+' suffix), outline number 21-0049, land pattern 90-0235.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 15, 22 | N.C. | No connection - must remain unconnected per datasheet |
| 2, 28 | AIN1 / AIN2 | Analog inputs - differential pair for bipolar mode; single-ended for unipolar with AIN2 tied to reference |
| 3 | VREF | External reference input - accepts -5V ±0.05V; buffered to minimize loading on reference source |
| 4 | AGND | Analog ground - star-ground point for all analog return paths; isolated from DGND |
| 5–13 | D11–D4 | Three-state data outputs - MSB-aligned parallel output; active only when CS and RD are low |
| 14 | DGND | Digital ground - separate return for logic circuitry; connected to AGND at single star point |
| 16–19 | D3–D0 | Three-state data outputs - LSBs; same enable conditions as D11–D4 |
| 20 | CLKIN | External clock input - TTL-compatible; falling edge triggers SAR bit decisions |
| 21 | CLKOUT | Internal oscillator output - inverted CLKIN when external clock used; open when crystal-driven |
| 23 | RD | Read control - active-low; initiates conversion and enables data drivers with CS |
| 24 | CS | Chip select - active-low; combined with RD to start conversion and gate output buffers |
| 25 | BUSY | Status indicator - active-low during conversion; used for sample-and-hold synchronization |
| 26 | VSS | Negative supply - -12V ±10%; absolute max -17V relative to DGND |
| 27 | VDD | Positive supply - +5V ±5%; absolute max +7V relative to DGND |
Key Features
| Feature | Design Value |
|---|---|
| Plug-in replacement for AD7672 | Pin- and function-compatible with AD7672 - enables drop-in upgrade without PCB redesign |
| Buffered reference input | ±3µA max input current - allows single -5V reference to drive multiple MX7672 devices |
| Selectable input ranges | 0 to +5V / 0 to +10V / ±5V - configured externally; supports both unipolar and bipolar signal chains |
| Low power consumption | 110mW typical - achieved via BiCMOS process; enables dense data-acquisition systems without thermal derating |
| High-speed digital interface | 125ns access time - compatible with 80C86, 68000, and other legacy µP buses without glue logic |
Applications
| Telecommunications Baseband Processing | Sonar/Radar Signal Digitization |
|---|---|
Use Scenario: Digitizing IF signals from RF front-ends in cellular base stations and microwave links. IC Role / Device Role / Timing Role: High-speed ADC capturing 12-bit samples at up to 200kSPS with precise timing alignment to system clock. Use Value: 5µs conversion time enables >125kHz effective sampling rate; ±1 LSB INL preserves SNR in multi-carrier modulation schemes. |
Use Scenario: Converting pulsed echo returns in naval sonar arrays and airborne radar receivers. IC Role / Device Role / Timing Role: Precision analog front-end digitizer synchronized to pulse repetition interval via BUSY and CLKIN. Use Value: Buffered -5V reference input rejects supply noise; 125ns bus-access time supports real-time DMA transfers to FPGA-based beamformers. |
| Industrial Data-Acquisition Cards | PC-Based Test & Measurement I/O Boards |
Use Scenario: Modular DAQ modules for PLCs and SCADA systems measuring sensor outputs across wide voltage ranges. IC Role / Device Role / Timing Role: Configurable-range ADC interfaced to microcontroller via parallel bus; pin-selectable input scaling simplifies hardware variants. Use Value: 0 to +5V / 0 to +10V / ±5V range selection eliminates need for external gain stages; PLCC-28 package supports automated assembly. |
Use Scenario: ISA/PCI add-in cards for PC-based oscilloscopes, spectrum analyzers, and automated test equipment. IC Role / Device Role / Timing Role: Standalone ADC subsystem with slow-memory or ROM-mode interface to x86 CPU address/data bus. Use Value: 125ns access time meets ISA bus timing; BUSY signal enables wait-state generation for reliable µP read cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7672BNZ | Same 12-bit SAR architecture, 5µs conversion, but requires -12V reference; no buffered VREF input | Higher reference current draw (±100µA vs ±3µA); less suitable for multi-ADC reference sharing | Select AD7672BNZ only if existing design already uses -12V reference and layout cannot accommodate -5V rail |
| MAX1166BCAP+ | 16-bit SAR ADC, 10µs conversion, +5V-only supply, internal reference; no external VREF support | Higher resolution but slower; incompatible with -5V reference architecture and bipolar input configurations | Choose MAX1166BCAP+ only when resolution >12-bit is mandatory and system lacks negative supply rails |
Compared with AD7672BNZ and MAX1166BCAP+, the MX7672KP05+ uniquely combines 5µs speed, ±1 LSB INL, buffered -5V reference input, and PLCC-28 packaging - making it optimal for cost-sensitive, high-channel-count data-acquisition systems requiring pin-compatible AD7672 upgrades.
Availability
MX7672KP05+ is available at Aetrix Electronics and suitable for telecommunications infrastructure, sonar/radar signal processing, and industrial data-acquisition systems requiring stable component supply across extended temperature and long production lifecycles.
Supply support for MX7672KP05+ 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) designs precision analog and mixed-signal ICs for demanding industrial, communications, and computing applications.
The MX7672KP05+ belongs to Maxim's high-speed data-converter product line, engineered specifically for plug-in replacement of legacy AD7672-based systems while maintaining compatibility with existing PCB layouts and firmware interfaces.
FAQ
What is the guaranteed maximum conversion time for MX7672KP05+?
The MX7672KP05+ guarantees a maximum conversion time of 5 µs under synchronous clock operation at 2.5MHz, as confirmed in the Ordering Information table and Electrical Characteristics section. This specification applies across the full 0°C to +70°C operating temperature range and includes worst-case process, voltage, and temperature (PVT) margins. The MX7672KP05+ achieves this performance using a 12.5-clock-cycle conversion sequence.
Does MX7672KP05+ require an external reference voltage, and what are its specifications?
Yes, the MX7672KP05+ requires an external -5V reference voltage applied to the VREF pin. Per the datasheet, the valid input range is -5.05V to -4.95V, with input current limited to ±3µA due to its buffered reference input stage. This low-current requirement allows a single precision -5V reference to drive multiple MX7672KP05+ devices on the same board without degradation in accuracy or stability.
What package type and lead finish does MX7672KP05+ use?
The MX7672KP05+ uses a 28-pin plastic leaded chip carrier (PLCC) package with J-lead geometry, outline number 21-0049, and RoHS-compliant lead-free finish (indicated by the '+' suffix). It is not offered in PDIP or LCC variants - the 'P' in the part number explicitly denotes PLCC packaging, and the datasheet confirms this configuration in the Ordering Information table.
Can MX7672KP05+ operate with bipolar (±5V) input signals?
Yes, the MX7672KP05+ supports bipolar ±5V input operation via external pin configuration per Figure 15. In this mode, VIN connects to AIN1, +5V connects to AIN2, and -5V connects to VREF. The device maintains ±1 LSB integral nonlinearity and 12-bit resolution across the full ±5V range, with LSB size of 2.44mV (10V/4096), as verified in the Bipolar Operation section and Transfer Function diagrams.
Is MX7672KP05+ pin-compatible with AD7672, and what does "plug-in replacement" mean?
Yes, the MX7672KP05+ is a documented plug-in replacement for AD7672, meaning identical pinout, electrical interface, timing behavior, and functional operation. The datasheet explicitly states this compatibility in the General Description and Features sections. No PCB layout changes, firmware modifications, or external component adjustments are required when substituting MX7672KP05+ for AD7672 in existing designs.
MX7672KP05+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-LCC (J-Lead)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 308k
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V, -10.8V ~ 13.2V
- Voltage - Supply, Digital:
- 5V, -10.8V ~ 13.2V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-PLCC (11.51x11.51)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MX7672KP05+ FAQ
1.How can I place an order for MX7672KP05+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MX7672KP05+ 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 MX7672KP05+ reliable?
The price and inventory of MX7672KP05+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX7672KP05+ is usually 5 days.
3.What payment methods are accepted for MX7672KP05+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX7672KP05+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX7672KP05+?
MX7672KP05+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX7672KP05+ 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 MX7672KP05+?
For technical support, including MX7672KP05+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX7672KP05+ requirements.
6.How does Aetrix verify that MX7672KP05+ is sourced from the original manufacturer or authorized distributors?
All MX7672KP05+ 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 MX7672KP05+ meets industry standards.
7.What is the process for return or replacement of MX7672KP05+?
All MX7672KP05+ units undergo pre-shipment inspection (PSI). If there is an issue with MX7672KP05+, 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 MX7672KP05+ part is unused and in its original packaging.
Return procedure for MX7672KP05+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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