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Analog Devices Inc. AD8250ARMZ-R7
- Part No.:
- AD8250ARMZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8250ARMZ-R7.pdf
- Description:
- IC INST AMP 1 CIRCUIT 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:858
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Product details
Overview
AD8250ARMZ-R7 from Analog Devices is a digitally programmable gain instrumentation amplifier (PGIA) in a 10-lead MSOP package, delivering 10 MHz bandwidth, 20 V/µs slew rate, and selectable gains of 1, 2, 5, or 10. It features 98 dB minimum CMRR at G = 10, 1.7 µV/°C max offset drift, and 615 ns settling time to 0.001%, making it ideal for high-precision sensor signal conditioning before high-speed ADCs.
For engineers reviewing the AD8250ARMZ-R7 datasheet, AD8250ARMZ-R7 pinout, AD8250ARMZ-R7 application, or AD8250ARMZ-R7 equivalent, key selection criteria include guaranteed gain error ≤0.04%, input impedance >1 GΩ, ±5 V to ±15 V dual-supply operation, and support for both transparent and latched digital gain control modes in industrial data acquisition systems.
Technical Context
The AD8250ARMZ-R7 implements a classic 3-op-amp instrumentation topology on Analog Devices' iCMOS® process, enabling precision DC performance alongside high-speed AC response. Its internal laser-trimmed resistor array ensures gain accuracy and CMRR stability across temperature and frequency.
Dual gain programming modes-transparent (gain set directly by A0/A1 logic levels with WR tied to −VS) and latched (gain updated on WR falling edge)-provide flexibility for shared-bus systems. Gain switching time is 325 ns, with full output settling added separately per gain setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 10 MHz at G = 1–5; enables accurate amplification of fast sensor transients up to ~1.6 MHz sine wave fundamentals. |
| Slew Rate | 20 V/µs min at G = 1; supports ≥10 V step responses within sub-microsecond settling windows. |
| CMRR | 98 dB min at G = 10, DC–60 Hz; rejects common-mode noise from noisy industrial environments. |
| Settling Time | 615 ns max to 0.001% at G = 1; meets timing budgets for 1 MSPS+ SAR ADC interfaces. |
| Gain Error | 0.03% max at G = 1; eliminates need for per-channel calibration in multi-channel DAQ systems. |
| Input Impedance | 1.25 GΩ || 2 pF common-mode; preserves signal integrity from high-impedance sources like piezoelectric sensors. |
| Quiescent Current | 4.1 mA typical; balances low power with high-speed capability for portable test equipment. |
Pinout & Package
AD8250ARMZ-R7 is housed in a 10-lead MSOP (3 mm × 3 mm) package with exposed pad for thermal enhancement, rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Inverting input | True differential input node; matched to +IN for optimal CMRR and gain accuracy. |
| 2 (DGND) | Digital ground reference | Independent ground for A0/A1/WR logic; must be decoupled separately from analog ground. |
| 3 (−VS) | Negative supply rail | Accepts −5 V to −15 V; powers all internal amplifiers and bias networks. |
| 4 (A0) | Gain LSB control | Logic input defining gain bit 0; valid only when WR is asserted per mode (transparent/latched). |
| 5 (A1) | Gain MSB control | Logic input defining gain bit 1; used with A0 to select one of four discrete gains. |
| 6 (WR) | Write enable / latch control | Active-low in latched mode; determines whether gain updates occur synchronously or transparently. |
| 7 (OUT) | Amplified output | Single-ended output capable of ±13.5 V swing into 2 kΩ load; drives ADC inputs directly. |
| 8 (+VS) | Positive supply rail | Accepts +5 V to +15 V; supplies all internal circuitry including output stage. |
| 9 (REF) | Reference voltage input | DC offset adjustment point; sets output common-mode level (e.g., mid-supply for bipolar ADCs). |
| 10 (+IN) | Noninverting input | True differential input node; forms high-Z bridge interface with −IN for strain gauges or RTDs. |
Key Features
| Feature | Design Value |
|---|---|
| iCMOS® process integration | Enables monolithic matching of resistors and amplifiers, guaranteeing <0.04% gain error and 98 dB CMRR without external trimming. |
| Dual gain programming modes | Transparent mode simplifies microcontroller interfacing; latched mode allows shared A0/A1 bus with other PGIA devices on same PCB. |
| High input impedance & low bias current | 1.25 GΩ common-mode input impedance and 5–30 nA bias current preserve signal fidelity from high-Z sensors like pH electrodes. |
| Low 0.1–10 Hz noise | 1.0 µV p-p RTI at G = 10 enables stable DC measurements in biomedical applications without post-acquisition filtering. |
| Robust supply range | ±5 V to ±15 V operation supports legacy industrial rails and modern low-voltage designs without level-shifting circuitry. |
Applications
| Industrial Data Acquisition | Biomedical Signal Conditioning |
|---|---|
Use Scenario: Multiplexed thermocouple or RTD measurements in PLC analog input modules with 16-bit+ resolution. IC Role / Device Role / Timing Role: Precision front-end PGIA providing programmable gain, high CMRR, and fast settling before successive-approximation ADC sampling. Use Value: Eliminates external gain-switching relays or op-amp arrays; reduces channel-to-channel gain mismatch to <0.04% and enables software-selectable ranges. | Use Scenario: Low-noise amplification of ECG or EEG electrode signals prior to digitization in portable patient monitors. IC Role / Device Role / Timing Role: Instrumentation amplifier with GΩ input impedance and <1.7 µV/°C offset drift, rejecting 50/60 Hz interference while preserving microvolt-level bio-potentials. Use Value: Achieves 1.0 µV p-p 0.1–10 Hz noise at G = 10, enabling clean baseline capture without aggressive digital filtering that degrades temporal resolution. |
| Automated Test Equipment | High-Speed Sensor Interface |
Use Scenario: Universal source-measure unit (SMU) channel supporting variable-range voltage/current sourcing and measurement. IC Role / Device Role / Timing Role: Programmable gain stage in feedback path of precision current source, enabling dynamic range extension from nA to mA levels. Use Value: 615 ns settling to 0.001% allows full-scale step response within single ADC conversion cycle at 1 MSPS, improving test throughput. | Use Scenario: Interfacing MEMS accelerometers or ultrasonic transducers requiring wideband amplification with minimal phase distortion. IC Role / Device Role / Timing Role: High-bandwidth (10 MHz), low-distortion (−110 dB THD) PGIA driving SAR ADCs with >100 dB SNR requirements. Use Value: Maintains 80 dB CMRR up to 50 kHz, suppressing RF coupling and switching noise in motor-drive adjacent systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable gain instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8251ARMZ | Higher gain range (G = 1, 2, 4, 8); lower bandwidth (3 MHz at G = 8); 12-bit DAC-integrated reference buffer. | Better suited for closed-loop servo control with integrated DAC-based offset tuning; less ideal for wideband sensor signals above 3 MHz. | Select AD8251ARMZ when reference buffering and finer gain steps outweigh bandwidth needs. |
| LTC6915IMS8#PBF | Single-supply only (2.7–10.5 V); lower slew rate (12 V/µs); no latched gain mode; smaller 8-MSOP package. | Optimized for battery-powered portable instruments; lacks dual-supply flexibility and robust CMRR above 10 kHz. | Choose LTC6915IMS8#PBF for cost-sensitive, single-rail, low-power handheld devices where 10 MHz bandwidth is unnecessary. |
Compared with AD8250ARMZ-R7, AD8251ARMZ trades bandwidth for integrated DAC functionality and finer gain resolution, while LTC6915IMS8#PBF sacrifices dual-supply operation and high-frequency CMRR for compact size and lower quiescent current-making AD8250ARMZ-R7 the optimal choice for wideband, dual-rail, high-precision industrial DAQ.
Availability
AD8250ARMZ-R7 is available at Aetrix Electronics and suitable for industrial data acquisition, biomedical instrumentation, automated test equipment, and high-speed sensor interface applications requiring stable component supply and long-term manufacturing continuity.
Supply support for AD8250ARMZ-R7 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD8250ARMZ-R7 belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for high-speed, high-accuracy sensor signal conditioning in demanding industrial and medical measurement systems.
FAQ
What gain settings does the AD8250ARMZ-R7 support?
The AD8250ARMZ-R7 supports four discrete, digitally programmable gains: 1, 2, 5, and 10. These are selected via two logic inputs (A0 and A1) using either transparent mode (gain changes immediately with A0/A1 state) or latched mode (gain updates on the falling edge of the WR signal). The AD8250ARMZ-R7 guarantees gain error ≤0.04% across all settings and temperature.
Does the AD8250ARMZ-R7 require external resistors for gain configuration?
No, the AD8250ARMZ-R7 does not require external resistors for gain configuration. All gain-setting resistors are laser-trimmed and integrated internally on the iCMOS® die. This eliminates external component count, improves temperature stability, and ensures consistent CMRR and gain accuracy without manual calibration-key advantages of the AD8250ARMZ-R7 over discrete op-amp-based solutions.
Can the AD8250ARMZ-R7 operate from a single supply?
No, the AD8250ARMZ-R7 is specified and optimized for dual-supply operation from ±5 V to ±15 V. Its input common-mode range extends to within 1.5 V of each rail, and its output swing reaches ±13.5 V under ±15 V supplies. Single-supply operation is not supported; attempting it may result in clipping, reduced CMRR, or undefined behavior. For single-rail applications, consider alternatives like the LTC6915IMS8#PBF.
How does the AD8250ARMZ-R7 handle input overvoltage conditions?
The AD8250ARMZ-R7 includes robust input protection: absolute maximum ratings allow differential input voltages up to ±VS ±13 V (with current limited to <6 mA), and common-mode inputs up to ±VS ±13 V. Internal fault-current limiting prevents damage during overdrive, and Figure 31 in the datasheet shows controlled current draw versus input voltage. However, sustained overvoltage beyond ratings risks permanent damage-external clamping remains recommended in harsh industrial environments.
What is the purpose of the REF pin on the AD8250ARMZ-R7?
The REF pin on the AD8250ARMZ-R7 sets the output common-mode voltage level. When driven with a stable DC voltage (e.g., +2.5 V for a 5 V single-ended ADC reference), it shifts the entire output swing around that level-enabling direct interfacing with unipolar ADCs or level-shifting for optimal dynamic range. The AD8250ARMZ-R7 guarantees 1 ± 0.0001 V/V gain from REF to OUT, ensuring precise offset control without additional op-amps.
AD8250ARMZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCMOS®
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- Push-Pull
- Slew Rate:
- 25V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 10 MHz
- Current - Input Bias:
- 5 nA
- Voltage - Input Offset:
- 70 µV
- Current - Supply:
- 4.1mA
- Current - Output / Channel:
- 37 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
AD8250ARMZ-R7 FAQ
1.How can I place an order for AD8250ARMZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8250ARMZ-R7 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 AD8250ARMZ-R7 reliable?
The price and inventory of AD8250ARMZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8250ARMZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8250ARMZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8250ARMZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8250ARMZ-R7?
AD8250ARMZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8250ARMZ-R7 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 AD8250ARMZ-R7?
For technical support, including AD8250ARMZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8250ARMZ-R7 requirements.
6.How does Aetrix verify that AD8250ARMZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8250ARMZ-R7 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 AD8250ARMZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8250ARMZ-R7?
All AD8250ARMZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8250ARMZ-R7, 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 AD8250ARMZ-R7 part is unused and in its original packaging.
Return procedure for AD8250ARMZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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