My Inquiry
My Account
Analog Devices Inc. AD7468BRMZ
- Part No.:
- AD7468BRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7468BRMZ.pdf
- Description:
- IC ADC 8BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,167
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7468BRMZ from Analog Devices is an 8-bit, micropower successive approximation analog-to-digital converter (ADC) operating from a single 1.6 V to 3.6 V supply. It delivers 320 kSPS throughput, 8 nA typical power-down current, and 0.2 mW max power dissipation at 1.8 V/100 kSPS, serving as a precision digitizer in ultra-low-power sensor interfaces and battery-powered data acquisition systems.
For engineers reviewing the AD7468BRMZ datasheet, AD7468BRMZ pinout, AD7468BRMZ application, or AD7468BRMZ equivalent, this page provides verified specifications, SOT-23 package details, SPI-compatible serial interface behavior, and validated alternative options for low-voltage, high-efficiency ADC selection.
Technical Context
The AD7468BRMZ implements a standard successive approximation register (SAR) architecture with no pipeline delay, using VDD as its internal reference to enable a full-scale input range of 0 V to VDD. Conversion is initiated on the falling edge of CS and clocked by SCLK, requiring exactly 10 SCLK cycles per conversion at up to 3.4 MHz.
Its track-and-hold amplifier supports >3 MHz input bandwidth and achieves 49 dB SINAD at 30 kHz with 1.8 V supply, while automatic power-down reduces current to 8 nA between conversions-critical for duty-cycled sensing nodes where average power dominates system lifetime.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes for basic sensor digitization without oversampling complexity |
| Throughput Rate | 320 kSPS maximum - enables real-time capture of audio-band or control-loop signals at minimal latency |
| Supply Voltage Range | 1.6 V to 3.6 V - compatible with single-cell Li-ion, coin-cell, and regulated 1.8 V/2.5 V/3.3 V rails |
| Power-Down Current | 8 nA typical - extends multi-year battery life in intermittent-sampling applications |
| SINAD @ 30 kHz | 49 dB min - sufficient for 7.5 ENOB in industrial monitoring and medical front-ends |
| Integral Nonlinearity | ±0.2 LSB max - ensures monotonicity and predictable error across full scale |
| Conversion Time | 2.94 μs max - deterministic timing simplifies synchronization with microcontroller peripherals |
Pinout & Package
AD7468BRMZ is housed in a RoHS-compliant 6-lead SOT-23 package (2.9 mm × 1.6 mm × 1.1 mm), optimized for space-constrained PCB layouts in portable instrumentation and wearables.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select (active low) | Initiates conversion and frames serial data transfer; sampled on falling edge to trigger acquisition |
| VDD | Power supply input | Single 1.6–3.6 V rail powers analog core, digital logic, and internal reference - no external reference needed |
| GND | Analog ground | Common return for VIN and internal circuitry; must be isolated from noisy digital ground to preserve SNR |
| VIN | Analog input | Single-ended input with 0 V to VDD range; 20 pF input capacitance requires low-impedance source or external buffering |
| SDATA | Serial data output | MSB-first 12-bit frame (4 leading zeros + 8-bit result); tri-stated after conversion unless actively read |
| SCLK | Serial clock input | Drives both data transfer and internal conversion timing; supports 10–3.4 MHz range with flexible speed/power trade-off |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Deterministic 2.94 μs conversion time enables precise timing-critical sampling in closed-loop control |
| Internal VDD-referenced ADC | Eliminates external reference component count and layout area while maintaining 0–VDD input range |
| SPI/QSPI/MICROWIRE/DSP compatibility | Direct interface with common microcontrollers (e.g., STM32, MSP430, C2000) without protocol translation |
| Automatic power-down | Reduces average current to nanowatt levels between conversions - essential for energy harvesting designs |
| Guaranteed no missing codes | Ensures monotonic response across all 256 codes, simplifying calibration and linearization algorithms |
Applications
| Portable Medical Sensors | Battery-Powered Environmental Monitors |
|---|---|
Use Scenario: Continuous temperature and pulse oximetry signal digitization in handheld clinical devices powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Primary ADC capturing analog sensor outputs at 100–250 Hz with sub-μA average current draw during sleep intervals. Use Value: 8 nA power-down current extends battery life beyond 5 years; 8-bit resolution meets diagnostic accuracy requirements for trend analysis. |
Use Scenario: Remote soil moisture and ambient light logging in agricultural IoT nodes deployed for 3+ years without maintenance. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated only during scheduled sensor reads, synchronized to MCU wake-up events. Use Value: Single-supply 1.6 V operation enables direct connection to buck-boost regulators; no reference IC reduces BOM cost and failure points. |
| Isolated Industrial Sensor Interfaces | Low-Cost Wearable Biopotential Front-Ends |
Use Scenario: Digitizing 4–20 mA loop signals or thermocouple outputs behind digital isolators in factory automation modules. IC Role / Device Role / Timing Role: Isolated-side ADC converting conditioned analog signals before transmission across capacitive or magnetic isolation barriers. Use Value: 320 kSPS throughput supports oversampling for noise reduction; SPI interface minimizes isolator channel count versus parallel bus alternatives. |
Use Scenario: ECG/EMG signal acquisition in compact fitness bands where PCB area and quiescent power are strictly constrained. IC Role / Device Role / Timing Role: First-stage digitizer for analog-filtered biopotential waveforms, interfacing directly with ultra-low-power ARM Cortex-M0+ MCUs. Use Value: SOT-23 footprint saves >2 mm² vs. MSOP; 1.6 V minimum supply allows operation during brown-out conditions without reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit, 200 kSPS, 2.7–5.25 V supply, 1.25 mW at 3 V - higher voltage floor and power than AD7468BRMZ | Requires level-shifting for sub-2.7 V systems; less suitable for coin-cell or energy-harvesting use cases | Select when interfacing with legacy 3.3 V/5 V microcontrollers and higher-speed sampling is not required |
| MAX11100ETE+ | 8-bit, 500 kSPS, 2.7–3.6 V supply, 1.5 μA power-down - lacks 1.6 V support and ultra-low shutdown current | Not viable for 1.6–2.5 V battery chemistries; higher shutdown current limits multi-year deployment | Prefer when maximum throughput is prioritized over minimum supply voltage and standby power |
Compared with ADS7822U and MAX11100ETE+, AD7468BRMZ uniquely enables operation down to 1.6 V with 8 nA shutdown current-making it the only option among the three for long-life, single-cell lithium or supercapacitor-powered systems demanding sub-μW average power.
Availability
AD7468BRMZ is available at Aetrix Electronics and suitable for battery-powered systems, remote data acquisition, isolated sensor interfaces, and portable medical instruments requiring stable component supply across extended production lifecycles.
Supply support for AD7468BRMZ 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, headquartered in Norwood, MA, with design and manufacturing expertise spanning over 50 years.
The AD7466/AD7467/AD7468 family was engineered specifically for micropower, single-supply data acquisition in size- and energy-constrained applications - emphasizing ultra-low voltage operation, integrated reference, and minimal external component count.
FAQ
What is the minimum supply voltage required for AD7468BRMZ to operate correctly?
The AD7468BRMZ is fully specified to operate from 1.6 V to 3.6 V. At 1.6 V, it maintains 8-bit resolution, guaranteed no missing codes, and 49 dB SINAD at 30 kHz. Below 1.6 V, functionality is not assured - the device may fail to initialize or produce invalid conversions. Always verify regulator tolerance and load transient behavior when designing for 1.6 V operation.
Does AD7468BRMZ require an external reference voltage?
No, AD7468BRMZ uses its VDD supply as the internal reference, enabling a full-scale input range of 0 V to VDD. This eliminates the need for external reference components, reduces BOM cost and PCB area, and simplifies layout - especially valuable in space-constrained, low-power designs where reference drift or noise would otherwise degrade performance.
How does the power-down mode function in AD7468BRMZ?
AD7468BRMZ enters automatic power-down mode after each conversion completes and SDATA goes high-impedance. In this state, supply current drops to 8 nA typical (0.1 μA max), independent of SCLK activity. Power-down is exited automatically on the next CS falling edge, with 640 ns max acquisition time required to settle for full-scale step inputs at VDD ≥ 1.8 V.
What serial interface protocols is AD7468BRMZ compatible with?
AD7468BRMZ supports SPI, QSPI, MICROWIRE, and DSP-compatible serial interfaces. Its SDATA output is MSB-first, framed by CS, and synchronized to the falling edge of SCLK. The 4-zero prefix followed by 8-bit data ensures interoperability with standard SPI controllers without custom bit-shifting firmware - confirmed across multiple Analog Devices evaluation platforms and third-party MCU SDKs.
Can AD7468BRMZ be used with a 1.8 V microcontroller GPIO interface?
Yes - AD7468BRMZ's digital inputs (CS, SCLK) accept 0.7 × VDD as VIH minimum, which equals 1.26 V at 1.8 V supply, well within standard 1.8 V logic high thresholds (≥1.35 V). Its SDATA output drives VOH ≥ VDD − 0.2 V (≥1.6 V), ensuring reliable recognition by 1.8 V MCU inputs. No level-shifting is required for co-supplied 1.8 V systems.
AD7468BRMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 1.6V ~ 3.6V
- Voltage - Supply, Digital:
- 1.6V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7468BRMZ FAQ
1.How can I place an order for AD7468BRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7468BRMZ 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 AD7468BRMZ reliable?
The price and inventory of AD7468BRMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7468BRMZ is usually 5 days.
3.What payment methods are accepted for AD7468BRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7468BRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7468BRMZ?
AD7468BRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7468BRMZ 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 AD7468BRMZ?
For technical support, including AD7468BRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7468BRMZ requirements.
6.How does Aetrix verify that AD7468BRMZ is sourced from the original manufacturer or authorized distributors?
All AD7468BRMZ 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 AD7468BRMZ meets industry standards.
7.What is the process for return or replacement of AD7468BRMZ?
All AD7468BRMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7468BRMZ, 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 AD7468BRMZ part is unused and in its original packaging.
Return procedure for AD7468BRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7468BRMZ Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
