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Analog Devices Inc. SMP08FPZ
- Part No.:
- SMP08FPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Amplifiers
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
SMP08FPZ.pdf
- Description:
- IC OPAMP SAMPL/HOLD 8 CIRC 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,968
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Product details
Overview
SMP08FPZ from Analog Devices is an 8-channel multiplexed sample-and-hold (S/H) IC with break-before-make switching, internal address decoder, and on-chip output buffers. It supports ±5 V dual supply or +12 V single supply operation, delivers 0.01% linearity error over 0.06 V to 10 V output range, and achieves 3.5 µs acquisition time (0 V to 10 V, 0.1%) for integration in microprocessor-based calibration systems.
For engineers reviewing the SMP08FPZ datasheet, SMP08FPZ pinout, SMP08FPZ application, or SMP08FPZ equivalent, key selection considerations include hold step (≤4 mV), droop rate (2–20 mV/s), channel select time (90 ns), analog crosstalk (–72 dB), and capacitive load stability up to 500 pF without external compensation.
Technical Context
The SMP08FPZ integrates eight independent S/H channels with a shared input, TTL/CMOS-compatible digital control (A/B/C address lines + INH), and internally regulated logic supply. Its break-before-make switch architecture prevents channel shorting during address transitions, eliminating need for external decoding logic.
Each channel features a unity-gain buffer with guaranteed 10 mV offset (±20°C to +85°C), 3 V/µs slew rate, and ±20 mA output drive capability-though sinking current is limited near VSS. Hold capacitors are internally referenced to VSS, making ground noise coupling critical in single-supply configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Linearity Error | 0.01% over 0.06 V to 10 V range - ensures <1/2 LSB error for 8-bit DAC interfacing at 10 V full scale. |
| Acquisition Time | 3.5–4.25 µs (0 V to 10 V, 0.1%) - enables high-speed multiplexed sampling in real-time control loops. |
| Hold Step | 2.5–4 mV (TA = +25°C to +85°C) - defines pedestal error magnitude when switching from sample to hold mode. |
| Droop Rate | 2–20 mV/s - determines maximum hold interval before refresh (e.g., ≤31 ms for 12-bit accuracy at 10 V). |
| Analog Crosstalk | –72 dB (0 V to 10 V step) - maintains signal integrity across adjacent channels in dense multiplexed arrays. |
| Capacitive Load Stability | Stable with ≤500 pF - eliminates need for external isolation resistors in typical PCB trace loading scenarios. |
| Supply Range | +7 V to +15 V single supply or ±5 V to ±7.5 V dual supply - supports flexible system-level power architecture. |
Pinout & Package
Package: 16-pin plastic DIP (N-16), through-hole mount, 0.300-inch width, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 12, 13, 14, 15 | Analog Output (CH0OUT–CH7OUT) | Buffered S/H outputs; each capable of sourcing >20 mA but limited sink current near VSS. |
| 3 | Analog Input | Low-impedance voltage input node; requires fast-settling op amp driver to preserve acquisition spec. |
| 6 | Inhibit (INH) | Active-low global hold control; forces all channels into hold mode regardless of address inputs. |
| 7, 8, 9 | Address Inputs (A, B, C) | 3-bit binary channel select; internal decoder enables direct microprocessor interface without glue logic. |
| 10 | Digital Ground (DGND) | Logic reference; must be physically separated from analog ground to minimize digital noise coupling. |
| 11 | VSS | Negative supply or ground reference; internal hold capacitors tied here-critical for low-noise hold performance. |
| 16 | VDD | Positive supply; powers analog core, buffers, and internal logic regulator (TTL/CMOS compatible). |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Prevents momentary shorting between channels during address changes-no external timing logic required. |
| Internal address decoder | Accepts 3-bit A/B/C inputs to directly select one of eight channels-reduces MCU GPIO count and firmware overhead. |
| On-chip output buffers | Eliminates need for external op amps; guarantees 10 mV max offset and 3 V/µs slew rate into 20 kΩ loads. |
| Internally regulated TTL supply | Maintains logic compatibility across full VDD range (7–15 V), enabling robust interface with diverse digital controllers. |
| Single- or dual-supply operation | Configurable for +12 V/0 V or ±5 V rails-simplifies integration into mixed-signal systems with existing power domains. |
Applications
| Automated Test Equipment (ATE) Calibration | Industrial Process Control Outputs |
|---|---|
Use Scenario: Simultaneous capture and retention of eight reference voltages for periodic self-calibration of multichannel DMMs or signal analyzers. IC Role / Device Role / Timing Role: Multiplexed S/H front-end that freezes DAC outputs prior to ADC measurement, synchronized via INH and address lines. Use Value: Enables 8-channel calibration without 8 discrete S/H ICs-reducing board area by >60% and eliminating inter-channel timing skew. | Use Scenario: Holding setpoint voltages for eight independent PID controller outputs in PLC-based manufacturing systems. IC Role / Device Role / Timing Role: Sample-and-hold stage buffering DAC outputs to maintain stable analog actuator commands during bus arbitration delays. Use Value: Droop rate ≤20 mV/s allows >500 ms hold duration before 19.5 mV (8-bit LSB) drift-supporting long scan cycles without refresh overhead. |
| Medical Instrumentation Signal Routing | Communications Channel Conditioning |
Use Scenario: Temporarily storing eight sensor-conditioned voltages (e.g., ECG leads, temperature nodes) for sequential digitization in portable diagnostics. IC Role / Device Role / Timing Role: Low-crosstalk (–72 dB) multiplexer holding analog signals during ADC conversion to prevent interference between channels. Use Value: High channel isolation preserves signal fidelity across biopotential measurements where common-mode rejection is critical. | Use Scenario: Maintaining eight independent bias voltages for RF front-end gain stages in multi-band base station transceivers. IC Role / Device Role / Timing Role: Precision hold element stabilizing VGS control points for GaAs FETs during frequency hopping events. Use Value: 90 ns channel select time enables sub-microsecond reconfiguration-matching fast TDD/FDD switching requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sample-and-hold applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD781JNZ | Single-channel S/H; 3 µs acquisition; no integrated multiplexer or address decoder. | Requires external 3-to-8 decoder and eight parallel devices for same functionality. | Choose only if system needs ultra-low droop (<0.5 mV/s) and can accommodate higher component count and layout complexity. |
| MAX196BCNI+ | 8-channel simultaneous-sampling ADC with integrated S/H; 16-bit resolution; serial interface. | Replaces both S/H and ADC functions-but lacks independent analog output hold capability. | Prefer when digitization is immediate and analog retention beyond ADC conversion is unnecessary. |
Compared with AD781JNZ and MAX196BCNI+, the SMP08FPZ uniquely combines octal channel count, internal decoding, and buffered analog outputs in one DIP package-enabling compact, low-latency hold architectures without sacrificing signal integrity or requiring external logic.
Availability
SMP08FPZ is available at Aetrix Electronics and suitable for automated test equipment calibration, industrial process control outputs, medical instrumentation signal routing, and communications channel conditioning requiring stable component supply across extended temperature ranges.
Supply support for SMP08FPZ 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, Inc. is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The SMP08FPZ belongs to Analog Devices' legacy precision sample-and-hold product line, designed specifically for space-constrained, multi-channel analog data acquisition systems requiring deterministic hold behavior and minimal external components.
FAQ
What is the maximum recommended capacitive load for SMP08FPZ outputs?
The SMP08FPZ is specified to remain stable with capacitive loads up to 500 pF, as confirmed in the Dynamic Performance section of its datasheet. This value applies under standard conditions (VDD = +12 V, TA = +25°C, no load). Exceeding 500 pF may cause overshoot (>30%) or ringing, degrading hold accuracy. For PCB traces or connectors adding distributed capacitance, verify total load including layout parasitics before final design sign-off. The SMP08FPZ does not require external series resistance for stability within this limit.
Can SMP08FPZ operate with a +5 V single supply?
No, SMP08FPZ cannot operate reliably with a +5 V single supply. Its absolute minimum supply voltage is +7 V (VDD to VSS ≥ 7 V), and specifications such as acquisition time and linearity degrade below this threshold. The device is characterized for +12 V/0 V or ±5 V operation. Using +5 V violates the Absolute Maximum Ratings table and risks failure to meet datasheet performance-including increased droop rate, reduced output swing (0.06 V to 9.5 V), and potential logic malfunction due to insufficient internal regulation margin.
How does the INH pin function in SMP08FPZ?
The INH (Inhibit) pin on SMP08FPZ is an active-low control that forces all eight channels into hold mode regardless of address inputs (A/B/C) or supply state. When pulled low, it disables sampling across all channels simultaneously-freezing their last held voltage. This enables synchronous hold across the entire array, critical for correlated multi-channel measurements. The pin draws ≤1 µA and must be driven to DGND (not left floating) to activate hold; open-circuit or high state permits normal multiplexed operation. Its recovery time after release is 90 ns (tIR), ensuring rapid resumption of sampling.
What is the significance of VSS connection in single-supply operation of SMP08FPZ?
In single-supply operation (+12 V/0 V), the VSS pin of SMP08FPZ must connect to a clean, low-impedance analog ground-not digital ground or noisy system ground. This is because internal hold capacitors are referenced directly to VSS; any noise or voltage fluctuation on this pin couples directly to all eight held outputs, degrading SNR and hold accuracy. Layout best practice mandates separate analog/digital ground planes joined at a single point near the SMP08FPZ power entry, with dedicated VSS trace routed away from digital switching paths. Failure to isolate VSS increases measured droop and hold step errors beyond datasheet limits.
Does SMP08FPZ support true rail-to-rail output swing?
No, SMP08FPZ does not support rail-to-rail output swing. Its specified output voltage range is (VSS + 0.06 V) to (VDD – 2 V) under load-e.g., 0.06 V to 10.0 V with +12 V/0 V supplies and 20 kΩ load. This 2 V headroom limitation arises from internal buffer architecture and prevents safe operation near VDD. Attempting to drive outputs to VDD or VSS risks increased offset, reduced linearity, and accelerated droop. For applications requiring wider swing, external op amp buffers with rail-to-rail output stages must be added-though this negates the SMP08FPZ's integrated-buffer advantage.
SMP08FPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Sample and Hold
- Applications:
- Data Acquisition
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-PDIP
SMP08FPZ FAQ
1.How can I place an order for SMP08FPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP08FPZ 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 SMP08FPZ reliable?
The price and inventory of SMP08FPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP08FPZ is usually 5 days.
3.What payment methods are accepted for SMP08FPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP08FPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP08FPZ?
SMP08FPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP08FPZ 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 SMP08FPZ?
For technical support, including SMP08FPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP08FPZ requirements.
6.How does Aetrix verify that SMP08FPZ is sourced from the original manufacturer or authorized distributors?
All SMP08FPZ 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 SMP08FPZ meets industry standards.
7.What is the process for return or replacement of SMP08FPZ?
All SMP08FPZ units undergo pre-shipment inspection (PSI). If there is an issue with SMP08FPZ, 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 SMP08FPZ part is unused and in its original packaging.
Return procedure for SMP08FPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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