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Analog Devices Inc. AMP04ESZ
- Part No.:
- AMP04ESZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AMP04ESZ.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,173
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Product details
Overview
AMP04ESZ from Analog Devices is a precision single-supply instrumentation amplifier optimized for low-power, high-accuracy signal conditioning in battery-powered and industrial sensor interfaces. It delivers 150 µV max input offset voltage, 700 µA max supply current, and programmable gain from 1 to 1000 via a single external resistor - enabling direct connection to strain gages, RTDs, and thermocouples with zero-in/zero-out operation on +5 V supplies.
For engineers reviewing the AMP04ESZ datasheet, AMP04ESZ pinout, AMP04ESZ application, or AMP04ESZ equivalent, key selection criteria include its rail-to-rail input common-mode range (0 V to VS – 1 V), 700 kHz small-signal bandwidth at G = 1, 0.005% gain nonlinearity, and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The AMP04ESZ employs a proprietary three-op-amp topology with laser-trimmed thin-film resistors to achieve <150 µV input offset and 30 ppm/°C gain tempco. Its input stage allows true ground-referenced operation - unlike conventional instrumentation amplifiers - by enabling common-mode input down to 0 V while maintaining full accuracy.
Gain is set by a single external resistor (RGAIN) per the equation G = 100 kΩ / RGAIN, and the REF pin supports precise output offset control in both single- and dual-supply configurations. The device operates across –40°C to +85°C and features <5 nA input bias current with 8 pA/°C drift, supporting high-impedance transducer interfacing without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +5 V to ±15 V - supports single-supply 5 V systems and dual-supply industrial rails without redesign. |
| Input Offset Voltage | ≤150 µV max - enables sub-µV-level resolution in precision RTD and thermocouple front-ends. |
| Supply Current | ≤700 µA max - extends battery life in portable instrumentation and wireless sensor nodes. |
| Gain Range | 1 to 1000 - set by one external resistor; eliminates complex gain-switching circuitry. |
| Small-Signal Bandwidth | 700 kHz at G = 1 - sufficient for DC–100 Hz sensor signals with margin for anti-alias filtering. |
| Common-Mode Rejection | ≥90 dB at G ≥ 100 - rejects noise from shared grounds in noisy industrial environments. |
| Input Common-Mode Range | 0 V to VS – 1 V - permits direct interface to grounded sensors without level-shifting. |
Pinout & Package
AMP04ESZ is housed in an 8-lead narrow-body SOIC (SO-8) package with standard JEDEC MS-012AC footprint (4.9 mm × 3.9 mm × 1.75 mm height). Pin 1 is marked with a dot; pins are numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RGAIN (inverting) | One terminal of external gain-setting resistor; connects to internal 100 kΩ feedback network. |
| 2 | –IN | Inverting input; differential sensing node for bridge-based transducers. |
| 3 | +IN | Non-inverting input; paired with –IN for true differential measurement. |
| 4 | V– | Negative supply pin; tied to ground in single-supply +5 V operation. |
| 5 | REF | Reference input; sets output DC level (e.g., 0 V out at 0 V differential input). |
| 6 | VOUT | Amplified output; swings to within 1 V of V+ under 2 kΩ load. |
| 7 | V+ | Positive supply pin; accepts +5 V (single) or +15 V (dual) supply. |
| 8 | RGAIN (non-inverting) | Second terminal of external gain-setting resistor; completes gain configuration path. |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor gain programming | Eliminates trimming potentiometers and multi-resistor networks - reduces BOM count and layout area. |
| Zero-in/zero-out operation | Delivers 0 V output for 0 V differential input on +5 V supply - simplifies calibration in unipolar systems. |
| Laser-trimmed thin-film resistors | Ensures 0.005% gain nonlinearity and 30 ppm/°C tempco - critical for stable long-term measurements. |
| Input bias current <5 nA | Enables direct connection to high-Z sources (e.g., thermocouples, piezoresistive sensors) without guard buffers. |
| Accessible feedback node (Pin 8) | Allows external capacitor placement for single-pole noise filtering - e.g., 10 Hz cutoff with 0.15 µF. |
Applications
| Strain Gage Signal Conditioning | RTD Temperature Measurement |
|---|---|
|
Use Scenario: Amplifying mV-level differential output from full-bridge strain gages in load cells and pressure sensors powered from 4–20 mA loops or battery sources. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing gain, common-mode rejection, and output offset control - referenced to loop ground or local analog common. Use Value: Enables noninteractive null/span trim in 4–20 mA transmitters (Figure 12), achieving <±0.1% FS accuracy without iterative calibration. |
Use Scenario: Linearized temperature sensing using 100 Ω platinum RTDs in medical thermometers and industrial process controllers operating from +5 V supplies. IC Role / Device Role / Timing Role: Differential amplifier with REF pin used to inject linearization feedback - converting nonlinear RTD resistance into 10 mV/°C voltage output. Use Value: Achieves better than ±0.5°C accuracy from 0°C to 400°C (Figure 11) using only passive components and no microcontroller compensation. |
| Thermocouple Interface | Battery-Powered Data Acquisition |
|
Use Scenario: Cold-junction-compensated K-type thermocouple amplification in portable test equipment with ground-referenced inputs and minimal power budget. IC Role / Device Role / Timing Role: High-input-impedance, low-drift instrumentation amplifier accepting thermocouple voltages directly - no external input protection or biasing required. Use Value: Input bias current <5 nA prevents thermocouple self-heating errors; 150 µV offset ensures <0.5°C error at room temperature without software correction. |
Use Scenario: Front-end signal conditioning in handheld multimeters, environmental monitors, and IoT edge sensors requiring >100-hour battery life on coin cells or AA batteries. IC Role / Device Role / Timing Role: Low-power instrumentation amplifier driving SAR ADCs - configured for G = 100 to maximize dynamic range while minimizing quiescent consumption. Use Value: 700 µA supply current allows continuous sampling for >200 hours on a 150 mAh CR2032 cell - validated in portable instrumentation reference designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8421ARZ | Higher bandwidth (10 MHz), lower noise (1.2 nV/√Hz), but requires dual supply or charge pump for true 0 V input; 1.2 mA supply current. | Better suited for high-speed data acquisition (>10 kHz) and AC-coupled sensor interfaces where ground-referenced DC operation is not required. | Select AD8421ARZ when bandwidth >1 MHz and noise <2 nV/√Hz are prioritized over single-supply simplicity and ultra-low power. |
| INA333AIDR | Lower supply current (50 µA), rail-to-rail output, but limited gain range (1–1000 only via internal resistor array; no external RGAIN); 25 µV offset. | Ideal for ultra-low-power, space-constrained designs where fixed-gain flexibility is acceptable and output swing to rail is mandatory. | Choose INA333AIDR for battery-powered wearables or implantables needing <100 µA total system current - but verify gain step granularity meets application needs. |
Compared with AD8421ARZ and INA333AIDR, the AMP04ESZ uniquely balances single-resistor programmability, true 0 V input capability, and sub-mA power in a standard SO-8 package - making it optimal for cost-sensitive, ground-referenced industrial sensor nodes where design simplicity and proven reliability are critical.
Availability
AMP04ESZ is available at Aetrix Electronics and suitable for strain gage interfaces, RTD temperature measurement systems, and battery-powered data acquisition requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for AMP04ESZ 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, automotive, communications, and healthcare markets since 1965.
The AMP04ESZ belongs to Analog Devices' precision instrumentation amplifier product line, designed specifically for low-power, ground-referenced sensor signal conditioning in harsh industrial and portable environments - emphasizing accuracy, stability, and ease of use over wide temperature ranges.
FAQ
What supply voltage range does the AMP04ESZ support?
The AMP04ESZ operates from +5 V single supply up to ±15 V dual supply. In single-supply mode, V– is connected to ground and V+ accepts +5 V, enabling direct integration into battery-powered systems. Absolute maximum ratings allow ±18 V supplies, but specified performance is guaranteed only within the –40°C to +85°C industrial temperature range and the stated supply limits. The AMP04ESZ maintains full accuracy across this entire voltage range.
How is gain set on the AMP04ESZ, and what resistor values correspond to common gains?
Gain is set by a single external resistor (RGAIN) connected between Pins 1 and 8, using the formula G = 100 kΩ / RGAIN. For G = 10, use 10 kΩ; for G = 100, use 1 kΩ; for G = 1000, use 100 Ω. The AMP04ESZ datasheet specifies tolerance impact: 0.75% max gain error for G = 1–100, and 0.4% max for G = 1000. Resistor temperature coefficient should be ≤50 ppm/°C to preserve gain stability.
Can the AMP04ESZ interface directly to grounded sensors like RTDs or thermocouples?
Yes - the AMP04ESZ supports true 0 V common-mode input, allowing direct connection to grounded transducers without level-shifting circuitry. Its input stage permits full accuracy from ground to VS – 1 V, and the REF pin enables precise output offset control. This capability is confirmed in the functional block diagram and Application Circuit Figure 11 (RTD amplifier) and Figure 13 (4–20 mA receiver), both using AMP04ESZ with grounded sensor references.
What is the maximum output voltage swing for the AMP04ESZ on a +5 V supply?
On a +5 V supply with V– = 0 V, the AMP04ESZ output swings from ≤2.5 mV above ground (VOL) to ≥4.0 V (VOH) under 2 kΩ load, per the AMP04E specifications table. At room temperature, typical swing is 4.2 V. This 4 V usable range supports 12-bit ADCs with 0–4 V input spans. Output current capability is ±15 mA source/sink, sufficient to drive most precision ADC reference buffers and RC filters.
Does the AMP04ESZ require external components for basic operation, and what are the minimum connections?
Minimum connections for basic operation are: V+ (+5 V), V– (GND), +IN and –IN (sensor inputs), VOUT (to next stage), REF (tied to GND for zero-output at zero-differential input), and RGAIN (e.g., 1 kΩ for G = 100) between Pins 1 and 8. No external capacitors or biasing resistors are required - the AMP04ESZ integrates all precision thin-film resistors internally. Decoupling capacitors (0.1 µF ceramic) at V+ and V– are recommended for noise immunity.
AMP04ESZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 700 kHz
- Current - Input Bias:
- 22 nA
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 750µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AMP04ESZ FAQ
1.How can I place an order for AMP04ESZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AMP04ESZ 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 AMP04ESZ reliable?
The price and inventory of AMP04ESZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AMP04ESZ is usually 5 days.
3.What payment methods are accepted for AMP04ESZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AMP04ESZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AMP04ESZ?
AMP04ESZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AMP04ESZ 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 AMP04ESZ?
For technical support, including AMP04ESZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AMP04ESZ requirements.
6.How does Aetrix verify that AMP04ESZ is sourced from the original manufacturer or authorized distributors?
All AMP04ESZ 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 AMP04ESZ meets industry standards.
7.What is the process for return or replacement of AMP04ESZ?
All AMP04ESZ units undergo pre-shipment inspection (PSI). If there is an issue with AMP04ESZ, 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 AMP04ESZ part is unused and in its original packaging.
Return procedure for AMP04ESZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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