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Analog Devices Inc. SMP18FRUZ-REEL7
- Part No.:
- SMP18FRUZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Amplifiers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SMP18FRUZ-REEL7.pdf
- Description:
- IC OPAMP SAMPL/HOLD 8CIR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,026
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Product details
Overview
SMP18FRUZ-REEL7 from Analog Devices is an octal sample-and-hold IC with multiplexed input, internal hold capacitors, TTL/CMOS-compatible logic inputs, and break-before-make channel addressing. It delivers 0.01% linearity error, 2.5 µs acquisition time (0–10 V to 0.1%), and ±1 mV hold-mode settling in 1 µs. It is used in multichannel data acquisition systems for precise timing deskew and calibration voltage storage.
For engineers reviewing the SMP18FRUZ-REEL7 datasheet, SMP18FRUZ-REEL7 pinout, SMP18FRUZ-REEL7 application, or SMP18FRUZ-REEL7 equivalent, key selection factors include droop rate (2–40 mV/s), dual/single-supply operation (±5 V or +12 V/0 V), channel select time (90 ns), and TSSOP-16 package compatibility with CD4051 pinout.
Technical Context
The SMP18FRUZ-REEL7 integrates eight buffer amplifiers, a 1-of-8 decoder, and internal hold capacitors referenced to VSS. Its oxide-isolated CMOS process enables low droop (2 mV/s typ), fast acquisition (2.5 µs), and high analog crosstalk rejection (–72 dB).
It supports single-supply (VDD = +12 V, VSS = 0 V) or dual-supply (VDD = +5 V, VSS = –5 V) operation, with output swing from (VSS + 0.06 V) to (VDD – 2 V). Logic inputs are compatible across the full supply range due to an internally regulated TTL supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Linearity Error | 0.01% - Ensures ≤ ±0.5 LSB error for 10-bit systems at ±3 V or 0–10 V input ranges. |
| Acquisition Time | 2.5 µs (0–10 V to 0.1%) - Enables high-throughput sampling in multichannel DAQ without external settling delay. |
| Droop Rate | 2 mV/s typical - Requires refresh every 60 ms for 10-bit accuracy (1 LSB = 9.8 mV at 10 V full scale). |
| Hold Step | 4–6 mV - Defines pedestal error magnitude during sample-to-hold transition; stable over temperature and input voltage. |
| Channel Select Time | 90 ns - Supports rapid channel switching in real-time control loops and event analysis systems. |
| Output Voltage Range | 0.06 V to 10 V (RL = 20 kΩ, VDD = +12 V, VSS = 0 V) - Covers industrial 0–10 V control signal standards. |
| Analog Crosstalk | –72 dB - Prevents inter-channel interference in dense multichannel sensor arrays or calibration banks. |
Pinout & Package
The SMP18FRUZ-REEL7 is housed in a 16-lead TSSOP (RU-16) package, 5.1 mm × 4.5 mm × 1.2 mm, with exposed pad for thermal enhancement. Pin 1 is marked by a dot; pin numbering follows standard TSSOP convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 12, 13, 14, 15 | CH0OUT–CH7OUT | Buffered analog outputs; each holds sampled voltage independently; capable of sourcing >1.2 mA. |
| 3 | INPUT | Analog signal input node; requires low-impedance drive (e.g., op amp) to preserve 2.5 µs acquisition spec. |
| 6 | INH | Inhibit control; active-low; halts all channel updates when asserted, preserving all held outputs. |
| 7 | DGND | Digital ground reference; must be physically separated from analog ground traces to minimize digital noise coupling. |
| 8 | VDD | Positive supply rail; accepts +7 V to +15 V (single) or +5 V (dual); powers logic and analog buffers. |
| 9, 10, 11 | A, B, C | 3-bit binary channel address inputs; decode to select one of eight channels; TTL/CMOS compatible. |
| 16 | VSS | Negative supply or ground reference; internal hold capacitors tie here; critical for noise-free hold performance. |
Key Features
| Feature | Design Value |
|---|---|
| Internal hold capacitors | Eliminates need for external capacitors; ensures consistent droop behavior and reduces board area by >30% vs discrete S/H designs. |
| Break-before-make switching | Prevents momentary shorting between channels during address transitions; avoids transient glitches on shared analog buses. |
| CD4051-compatible pinout | Enables drop-in replacement in legacy 8-channel mux/S&H layouts without PCB redesign or footprint change. |
| Single/dual supply flexibility | Supports both +12 V/0 V (industrial 0–10 V) and ±5 V (bipolar instrumentation) rails using identical device and layout. |
| 500 pF capacitive load stability | Drives long traces or ADC input capacitors directly without external isolation; simplifies interface design and improves SNR. |
Applications
| Multiple Path Timing Deskew | Memory Programmers |
|---|---|
Use Scenario: Aligning propagation delays across eight parallel test channels in automated test equipment (ATE) to ensure simultaneous sampling. IC Role / Device Role / Timing Role: Octal sample-and-hold captures and holds calibrated reference voltages per channel, enabling synchronized trigger offsets. Use Value: Achieves sub-100 ns timing alignment across all eight paths using a single SMP18FRUZ-REEL7, reducing component count versus eight discrete S/Hs. | Use Scenario: Generating stable, independent programming voltages for multiple memory cells during parallel write cycles. IC Role / Device Role / Timing Role: Stores and holds eight distinct VPP or VCC_prog levels derived from a shared DAC, decoupling voltage generation from timing-critical write pulses. Use Value: Eliminates DAC settling delay per cell; enables concurrent programming of up to eight cells with guaranteed voltage stability over >100 ms. |
| Mass Flow/Process Control | Medical Instrumentation |
Use Scenario: Maintaining precise setpoint voltages for eight independent PID controller outputs in chemical dosing systems. IC Role / Device Role / Timing Role: Holds calibrated analog outputs from microcontroller-based control algorithms, isolating sensitive analog loops from digital noise. Use Value: Delivers <2 mV/s droop-ensuring setpoint drift remains below 0.1% of full-scale (10 V) for >5 minutes without refresh. | Use Scenario: Storing calibrated gain/offset correction values for multi-sensor physiological monitoring (e.g., ECG, EEG, EMG channels). IC Role / Device Role / Timing Role: Captures and retains calibration coefficients during system boot or recalibration cycles, then releases them to analog front-end circuits. Use Value: Enables factory-trimmed accuracy (0.01% linearity) across all eight sensor paths using one SMP18FRUZ-REEL7 instead of eight precision DACs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal sample-and-hold applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7874ARZ | Integrated 12-bit DAC + S/H per channel; no multiplexed input; serial interface; larger SOIC-24 package. | Used where per-channel programmability and higher resolution outweigh cost and board space constraints. | Select AD7874ARZ only if system requires individual DAC output tuning-not just hold functionality. |
| SMP08FPZ | Slower acquisition (4.5 µs), higher droop (5 mV/s typ), plastic DIP-16 package; pin-compatible but not speed-equivalent. | Legacy drop-in replacement where 2.5 µs speed is not required and through-hole assembly is preferred. | Choose SMP08FPZ only for cost-sensitive, non-high-speed applications with existing DIP footprints. |
Compared with SMP18FRUZ-REEL7, AD7874ARZ adds DAC integration but sacrifices speed and increases size/cost; SMP08FPZ matches pinout but lacks the 2.5 µs acquisition and 2 mV/s droop needed for modern high-accuracy, high-throughput systems.
Availability
SMP18FRUZ-REEL7 is available at Aetrix Electronics and suitable for multichannel data acquisition systems, automated test equipment (ATE), and industrial process controllers requiring stable component supply, long-lifecycle support, and RoHS-compliant TSSOP packaging.
Supply support for SMP18FRUZ-REEL7 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and healthcare markets.
The SMP18 product line was designed specifically for systems requiring cycled calibration or arrays of stable analog control voltages-replacing ASICs or multiple DACs with a single monolithic octal S/H solution.
FAQ
What is the maximum recommended supply voltage for SMP18FRUZ-REEL7?
The absolute maximum rating for VDD to DGND is 17 V, but the SMP18FRUZ-REEL7 is specified for reliable operation between +7 V and +15 V in single-supply mode. Operation below +7 V degrades acquisition time, offset, and output compliance. For optimal performance, use +12 V (VDD) with 0 V (VSS) or ±5 V supplies as defined in the Rev. C datasheet.
Does SMP18FRUZ-REEL7 require external hold capacitors?
No, SMP18FRUZ-REEL7 integrates internal hold capacitors referenced to VSS. These eliminate the need for external capacitors, reduce PCB area, and ensure consistent droop behavior across temperature and unit-to-unit variation. External capacitors are neither required nor recommended unless specified for special filtering.
Can SMP18FRUZ-REEL7 operate with a single +5 V supply?
No-SMP18FRUZ-REEL7 requires minimum +7 V for single-supply operation to meet specifications. At +5 V, acquisition time, linearity, and output swing degrade beyond datasheet limits. Valid single-supply configurations include +12 V/0 V or +15 V/0 V; dual-supply operation supports ±5 V.
What is the function of the INH pin on SMP18FRUZ-REEL7?
The INH (Inhibit) pin on SMP18FRUZ-REEL7 is an active-low control that freezes all channel outputs in their current hold state. When asserted (logic low), it disables the internal decoder and prevents any new sample commands from updating outputs-even if address lines change-preserving voltage integrity during critical system events.
Is SMP18FRUZ-REEL7 pin-compatible with CD4051 analog multiplexers?
Yes-SMP18FRUZ-REEL7 uses the same 16-pin TSSOP pinout as the CD4051, including identical placement of A/B/C address inputs, INH, VDD, VSS, DGND, and channel I/O pins. This allows direct PCB-level replacement in legacy designs without layout modification, though functional behavior differs (S/H vs. mux).
SMP18FRUZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Sample and Hold
- Applications:
- Data Acquisition
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-TSSOP
SMP18FRUZ-REEL7 FAQ
1.How can I place an order for SMP18FRUZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP18FRUZ-REEL7 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 SMP18FRUZ-REEL7 reliable?
The price and inventory of SMP18FRUZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP18FRUZ-REEL7 is usually 5 days.
3.What payment methods are accepted for SMP18FRUZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP18FRUZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP18FRUZ-REEL7?
SMP18FRUZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP18FRUZ-REEL7 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 SMP18FRUZ-REEL7?
For technical support, including SMP18FRUZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP18FRUZ-REEL7 requirements.
6.How does Aetrix verify that SMP18FRUZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All SMP18FRUZ-REEL7 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 SMP18FRUZ-REEL7 meets industry standards.
7.What is the process for return or replacement of SMP18FRUZ-REEL7?
All SMP18FRUZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with SMP18FRUZ-REEL7, 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 SMP18FRUZ-REEL7 part is unused and in its original packaging.
Return procedure for SMP18FRUZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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