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Analog Devices Inc. AD7995YRJZ-1RL
- Part No.:
- AD7995YRJZ-1RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8
- Datasheet:
-
AD7995YRJZ-1RL.pdf
- Description:
- IC ADC 10BIT SAR SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,729
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Product details
Overview
AD7995YRJZ-1RL from Analog Devices is a 10-bit, 4-channel successive approximation ADC with I²C-compatible serial interface in an 8-lead SOT-23 package. It operates from 2.7 V to 5.5 V, delivers 1 µs conversion time, supports −40°C to +125°C automotive temperature range, and uses internal or external reference via VIN3/VREF for single-ended analog inputs - ideal for compact battery-powered sensor monitoring systems.
For engineers reviewing the AD7995YRJZ-1RL datasheet, AD7995YRJZ-1RL pinout, AD7995YRJZ-1RL application, or AD7995YRJZ-1RL equivalent, key selection criteria include its 10-bit resolution, I²C address flexibility (0x50/0x51), low 1 µA shutdown current, 4-channel sequencer operation, and qualification for automotive-grade reliability under extended temperature stress.
Technical Context
The AD7995YRJZ-1RL integrates a track-and-hold amplifier supporting up to 14 MHz full-power bandwidth and a 4-channel analog multiplexer. Its I²C interface supports standard (100 kHz), fast (400 kHz), and high-speed (up to 3.4 MHz) modes with clock stretching enabled above 1.7 MHz.
Conversion is command-triggered: each I²C read initiates acquisition and returns result. Reference can be derived from VDD (0 V to VDD input range) or applied externally at VIN3/VREF (1.2 V to VDD), enabling flexible dynamic range scaling without external reference ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - guarantees monotonic output and no missing codes across full operating range. |
| Conversion Time | 1 µs typical - enables sampling rates up to ~95 kSPS at 3.4 MHz I²C clock with clock stretching. |
| Input Channels | 4 single-ended analog inputs (VIN0–VIN2 + VIN3/VREF) - supports multi-sensor monitoring with automatic channel sequencing. |
| Supply Voltage | 2.7 V to 5.5 V - compatible with Li-ion, 3.3 V, and 5 V system rails without level-shifting. |
| Temperature Range | −40°C to +125°C (Y grade) - qualified for under-hood automotive and industrial harsh-environment deployment. |
| Shutdown Current | 1 µA maximum - minimizes quiescent power in always-on sensing nodes with periodic wake-up. |
| I²C Address Options | 0x50 or 0x51 - allows two AD7995YRJZ-1RL devices on same bus without address conflict. |
Pinout & Package
8-lead SOT-23 package (2.9 mm × 1.6 mm × 1.1 mm height), RoHS-compliant, thermal impedance θJA = 170°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SCL) | Digital Input | I²C serial clock input; requires external pull-up resistor; supports standard/fast/high-speed modes. |
| 2 (SDA) | Digital I/O (Open-Drain) | I²C bidirectional data line; open-drain output requires external pull-up; handles ACK/NACK signaling. |
| 3 (VIN0) | Analog Input | First single-ended analog input channel; 0 V to VREF range; 34 pF input capacitance during acquisition. |
| 4 (VIN1) | Analog Input | Second single-ended analog input channel; identical specs to VIN0; supports sequenced conversions. |
| 5 (VIN2) | Analog Input | Third single-ended analog input channel; shares same acquisition timing and reference dependency as VIN0–VIN1. |
| 6 (VIN3/VREF) | Configurable Terminal | Fourth analog input OR external reference input (1.2 V to VDD); dual-function pin enables flexible reference architecture. |
| 7 (GND) | Analog Ground | Primary AGND reference for all analog circuitry; must be star-connected to minimize noise coupling into ADC inputs. |
| 8 (VDD) | Power Supply | Single 2.7–5.5 V supply powering both analog and digital sections; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Sequencer operation | Automatically cycles through up to four channels per I²C read command - eliminates host MCU polling overhead. |
| I²C interface modes | Supports standard (100 kHz), fast (400 kHz), and high-speed (3.4 MHz) modes - scales throughput from ~5 kSPS to ~95 kSPS. |
| Reference flexibility | VIN3/VREF pin accepts either analog input or external reference - enables ratiometric or absolute measurement configurations. |
| Low-power shutdown | 1 µA max shutdown current with interface inactive - extends battery life in intermittent-sampling applications. |
| Channel-to-channel isolation | −90 dB at 10 kHz - prevents crosstalk between simultaneously monitored sensors (e.g., voltage/current/temperature). |
Applications
| Automotive Battery Monitoring | Industrial Sensor Hub |
|---|---|
|
Use Scenario: Real-time monitoring of 12 V lead-acid or 48 V mild-hybrid battery pack voltage, current shunt, temperature, and cell balancing status. IC Role / Device Role / Timing Role: 4-channel ADC digitizes analog signals from voltage dividers, current sense amplifiers, and thermistors; I²C interface enables daisy-chained communication with MCU over shared bus. Use Value: Single-chip solution reduces BOM count and PCB area vs. discrete ADC + I²C buffer; −40°C to +125°C rating ensures operation in engine bay environments. |
Use Scenario: Compact edge node collecting pressure, humidity, vibration, and ambient temperature from multiple industrial transducers. IC Role / Device Role / Timing Role: Simultaneous sampling of four analog sensors with auto-sequencing; low 1 µs conversion time supports sub-millisecond update rates. Use Value: Eliminates need for external multiplexer or sample-hold circuitry; 10-bit resolution meets accuracy requirements for predictive maintenance analytics. |
| Portable Medical Device | Smart Energy Metering |
|
Use Scenario: Wearable vital sign monitor measuring ECG lead voltage, skin temperature, SpO₂ photodiode current, and battery level. IC Role / Device Role / Timing Role: Low-power ADC interfaces directly to analog front-end; I²C allows integration with ultra-low-power ARM Cortex-M0+ MCU. Use Value: 1 µA shutdown current extends coin-cell battery life to >1 year; small SOT-23 footprint fits constrained wearable form factors. |
Use Scenario: Sub-metering module tracking voltage, current, neutral current, and auxiliary sensor inputs in residential smart meters. IC Role / Device Role / Timing Role: Digitizes isolated analog outputs from current transformers and voltage sensors; sequencer enables synchronized multi-channel capture. Use Value: Automotive-grade reliability ensures long-term stability in field-deployed utility infrastructure; VDD-referenced mode simplifies design with single supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7993BRUZ-REEL7 | 10-bit, 4-channel, SPI interface, TSSOP-16 package; higher 2.5 µs conversion time; no I²C support. | Requires SPI-capable host and larger PCB footprint; better noise immunity in electrically noisy environments. | Select when SPI is preferred over I²C or when board layout accommodates larger TSSOP package. |
| MCP3424-E/ST | 18-bit delta-sigma ADC, 4-channel, I²C interface, TSSOP-14; 15 sps to 3.75 kSPS; internal PGA; no high-speed I²C mode. | Higher resolution but lower throughput; suited for precision DC measurements (e.g., strain gauges), not dynamic signal capture. | Select for ultra-high-precision, low-bandwidth applications where 10-bit speed is unnecessary. |
Compared with AD7993BRUZ-REEL7 and MCP3424-E/ST, the AD7995YRJZ-1RL uniquely balances 10-bit accuracy, 1 µs conversion speed, I²C compatibility, and automotive-grade SOT-23 packaging - making it optimal for space-constrained, battery-aware, multi-sensor systems requiring moderate bandwidth and robustness.
Availability
AD7995YRJZ-1RL is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial sensor hubs, portable medical devices, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7995YRJZ-1RL 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 AD799x family was designed specifically for low-power, multichannel data acquisition in space- and power-constrained systems - emphasizing I²C simplicity, automotive qualification, and seamless integration with microcontrollers in sensor-rich edge nodes.
FAQ
What is the maximum I²C clock frequency supported by the AD7995YRJZ-1RL?
The AD7995YRJZ-1RL supports I²C high-speed mode up to 3.4 MHz with 100 pF bus capacitance, or 1.7 MHz with 400 pF. Clock stretching is automatically implemented above 1.7 MHz to ensure reliable data transfer during conversion. This enables effective throughput up to ~95 kSPS while maintaining signal integrity on loaded buses.
How does the VIN3/VREF pin function in the AD7995YRJZ-1RL?
In the AD7995YRJZ-1RL, the VIN3/VREF pin serves a dual role: as the fourth analog input (VIN3) when using VDD as reference, or as an external reference input (VREF) when applying 1.2 V to VDD. This flexibility allows ratiometric measurements (e.g., resistive sensors) or absolute measurements (e.g., voltage monitoring) without external reference ICs.
Is the AD7995YRJZ-1RL pin-compatible with other members of the AD799x family?
No - the AD7995YRJZ-1RL shares the same 8-lead SOT-23 package and pinout with AD7991YRJZ-1RL and AD7999YRJZ-1RL, but differs in resolution (10-bit vs. 12-/8-bit) and performance specifications. Pin compatibility enables hardware reuse across resolution grades, though firmware must account for bit-width and timing differences in conversion results.
What is the guaranteed DC accuracy of the AD7995YRJZ-1RL over temperature?
The AD7995YRJZ-1RL guarantees ±0.4 LSB integral nonlinearity and ±0.4 LSB differential nonlinearity across −40°C to +125°C. Offset error is ±2.25 LSB max, with offset temperature drift of 4.13 ppm/°C, and gain error of ±0.5 LSB max - ensuring stable 10-bit linearity in automotive and industrial thermal environments.
Does the AD7995YRJZ-1RL require external components for basic operation?
Yes - the AD7995YRJZ-1RL requires external pull-up resistors on SCL and SDA lines (typically 2.2 kΩ to VDD), a 0.1 µF ceramic decoupling capacitor on VDD close to the pin, and optionally an external reference source if VIN3/VREF is used for VREF. No external oscillator, reference IC, or driver circuitry is needed for standard operation.
AD7995YRJZ-1RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 140k
- Number of Inputs:
- 3, 4
- Input Type:
- Single Ended
- Data Interface:
- I2C
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- SOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7995YRJZ-1RL FAQ
1.How can I place an order for AD7995YRJZ-1RL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7995YRJZ-1RL 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 AD7995YRJZ-1RL reliable?
The price and inventory of AD7995YRJZ-1RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7995YRJZ-1RL is usually 5 days.
3.What payment methods are accepted for AD7995YRJZ-1RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7995YRJZ-1RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7995YRJZ-1RL?
AD7995YRJZ-1RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7995YRJZ-1RL 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 AD7995YRJZ-1RL?
For technical support, including AD7995YRJZ-1RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7995YRJZ-1RL requirements.
6.How does Aetrix verify that AD7995YRJZ-1RL is sourced from the original manufacturer or authorized distributors?
All AD7995YRJZ-1RL 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 AD7995YRJZ-1RL meets industry standards.
7.What is the process for return or replacement of AD7995YRJZ-1RL?
All AD7995YRJZ-1RL units undergo pre-shipment inspection (PSI). If there is an issue with AD7995YRJZ-1RL, 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 AD7995YRJZ-1RL part is unused and in its original packaging.
Return procedure for AD7995YRJZ-1RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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