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Analog Devices Inc. AD7453BRTZ-REEL7
- Part No.:
- AD7453BRTZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8
- Datasheet:
-
AD7453BRTZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,100
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Product details
Overview
AD7453BRTZ-REEL7 from Analog Devices is a 12-bit pseudo-differential successive approximation register (SAR) analog-to-digital converter operating from a single 2.7 V to 5.25 V supply, delivering up to 555 kSPS throughput with 70 dB SINAD at 100 kHz input frequency and ±1 LSB INL (B version), designed for precision transducer interface and portable instrumentation where low power and compact size are critical.
For engineers reviewing the AD7453BRTZ-REEL7 datasheet, AD7453BRTZ-REEL7 pinout, AD7453BRTZ-REEL7 application, or AD7453BRTZ-REEL7 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated SOT-23 pin functions, confirmed alternative options, and supply-chain support details specific to this reel-packaged variant.
Technical Context
The AD7453BRTZ-REEL7 implements a SAR architecture with no pipeline delay, using dual capacitive DACs and a differential track-and-hold amplifier capable of handling input frequencies up to 3.5 MHz. Conversion is initiated on the falling edge of CS and clocked by SCLK, supporting SPI/QSPI/MICROWIRE/DSP-compatible serial interfaces.
It features flexible power management: power-down mode draws ≤1 µA, and dynamic power scales with SCLK speed - 3.3 mW max at 555 kSPS with 3 V supply, 7.25 mW max at 5 V. The external reference (100 mV to VDD) sets full-scale span, and VIN– serves as programmable pseudo-ground for VIN+.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for high-fidelity signal digitization in sensor and instrumentation systems. |
| Throughput Rate | 555 kSPS maximum - enables real-time sampling of fast-changing analog signals such as vibration or audio band transducer outputs. |
| SINAD | 70 dB min at 100 kHz - ensures ≥10-bit effective resolution for clean signal capture in noisy industrial environments. |
| INL | ±1 LSB max (B version) - guarantees monotonicity and accurate end-point linearity without calibration in closed-loop control applications. |
| Power Consumption | 3.3 mW max at 3 V / 555 kSPS - allows battery operation for >1 year in typical 100 kSPS portable data loggers with coin-cell or Li-ion sources. |
| Reference Range | 100 mV to VDD - supports flexible scaling from low-voltage sensor outputs (e.g., 200 mV p-p thermocouple amps) up to rail-to-rail references. |
| Aperture Jitter | 50 ps typ - limits sampling uncertainty to <0.03 LSB at 100 kHz, preserving dynamic performance without external jitter cleanup. |
Pinout & Package
AD7453BRTZ-REEL7 is housed in an 8-lead SOT-23 package (JEDEC MO-178AA), measuring 2.9 mm × 1.6 mm × 1.1 mm, optimized for space-constrained PCB layouts in handheld and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive power supply | Accepts 2.7 V to 5.25 V; requires local decoupling with 0.1 µF ceramic + 10 µF tantalum to suppress switching noise and maintain PSRR >60 dB. |
| SCLK | Serial clock input | Drives both data transfer and internal conversion timing; supports up to 10 MHz; determines throughput rate and power consumption dynamically. |
| SDATA | Serial data output | 3-state output delivering 16-bit frame: four leading zeros + 12-bit MSB-first straight binary result; compatible with standard SPI master configurations. |
| CS | Chip select (active low) | Initiates conversion on falling edge and frames serial read; minimum pulse width 10 ns; enables precise timing control in multi-device bus systems. |
| VREF | External reference input | Defines full-scale range (VIN+ – VIN–); accepts 100 mV to VDD; must be decoupled with ≥0.1 µF capacitor to minimize noise-induced gain error. |
| VIN+ | Noninverting analog input | Accepts pseudo-differential signal up to VREF p-p; input capacitance 30 pF in track mode - requires matched source impedance ≤62 Ω for THD <–70 dB. |
| VIN– | Inverting analog input | Provides programmable pseudo-ground offset (e.g., 0 V or dc bias); separates ADC ground from signal ground to reject common-mode noise. |
| GND | Analog ground reference | Single-point return for all analog circuitry; must be isolated from digital ground to prevent coupling of digital switching noise into conversion results. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Enables deterministic, one-shot conversions with guaranteed latency ≤1.6 µs - essential for time-critical closed-loop feedback control. |
| Pseudo-differential input | Allows VIN– to be biased at any dc level between –0.1 V and +1.5 V (depending on VDD), enabling direct interface to bipolar sensors without level-shifting amplifiers. |
| Flexible clock-speed power management | Reduces power linearly with lower SCLK frequency - e.g., 100 kSPS operation consumes only ~0.64 mW at 3 V, extending battery life in intermittent-sampling applications. |
| High-speed serial interface | Native SPI/QSPI/MICROWIRE compatibility eliminates need for protocol translation logic, simplifying FPGA/microcontroller integration and reducing BOM count. |
| 1 µA power-down mode | Permits ultra-low-quiescent-current sleep states between measurements - critical for energy harvesting and wake-on-event sensor nodes. |
Applications
| Transducer Interface | Battery-Powered Systems |
|---|---|
Use Scenario: Digitizing output from strain-gauge bridges, RTDs, or piezoelectric sensors in industrial condition monitoring units. IC Role / Device Role / Timing Role: SAR ADC performing single-shot, low-latency conversion triggered by microcontroller GPIO; VIN– biased to mid-supply to accommodate ratiometric bridge excitation. Use Value: ±1 LSB INL ensures accurate force/temperature mapping without factory calibration; 70 dB SINAD preserves small-signal resolution amid motor-drive EMI. |
Use Scenario: Continuous voltage/current monitoring in portable medical devices (e.g., infusion pumps) powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-power ADC acquiring sensor data every 100 ms; enters 1 µA shutdown between samples to minimize average current draw. Use Value: 3.3 mW max at 3 V enables >500 hours of operation on 500 mAh battery; SOT-23 footprint saves PCB area for compact enclosure designs. |
| Data Acquisition Systems | Portable Instrumentation |
Use Scenario: Modular DAQ modules for field-deployable environmental sensors logging temperature, humidity, and gas concentration. IC Role / Device Role / Timing Role: Precision ADC interfacing to op-amp signal conditioning stages; uses external 2.5 V reference (AD780) for stable full-scale definition. Use Value: 50 ps aperture jitter maintains ENOB >10 bits at 100 kHz, ensuring spectral integrity for FFT-based air quality analysis algorithms. |
Use Scenario: Handheld multimeters and oscilloscope probes requiring high DC accuracy and AC fidelity within tight thermal envelopes. IC Role / Device Role / Timing Role: Primary digitizer accepting pseudo-differential inputs from front-end attenuators/buffers; CS synchronized to measurement trigger events. Use Value: ±3.5 LSB offset error and ±3 LSB gain error are factory characterized - enables one-time system calibration for <0.1% total unadjusted error across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822UID | 8-bit resolution, 200 kSPS max, SPI-only interface, 2.7–5.25 V supply | Limited to lower-precision applications like basic voltage monitoring; lacks pseudo-differential input and high-frequency SINAD performance | Select when cost sensitivity outweighs resolution needs and 12-bit linearity is unnecessary. |
| AD7457BRTZ-REEL7 | 12-bit, 250 kSPS max, same SOT-23 package and pinout, but lower throughput and reduced dynamic performance (67 dB SINAD) | Suitable for slower-sampling applications such as slow-process control loops where 555 kSPS headroom is unused | Choose for identical layout compatibility and simplified qualification when full-speed capability is not required. |
Compared with ADS7822UID and AD7457BRTZ-REEL7, the AD7453BRTZ-REEL7 provides 4× higher throughput and ≥3 dB better SINAD while maintaining identical SOT-23 footprint and supply range - making it the optimal choice for next-generation portable test equipment demanding both speed and precision.
Availability
AD7453BRTZ-REEL7 is available at Aetrix Electronics and suitable for transducer interface, battery-powered systems, and portable instrumentation requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for AD7453BRTZ-REEL7 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 AD7453BRTZ-REEL7 belongs to Analog Devices' precision SAR ADC product line, engineered specifically for low-power, high-accuracy data acquisition in space- and energy-constrained embedded systems.
FAQ
What is the maximum sampling rate supported by the AD7453BRTZ-REEL7?
The AD7453BRTZ-REEL7 supports a maximum throughput rate of 555 kSPS when operated with a 10 MHz SCLK and VDD = 2.7 V to 5.25 V. This rate is achieved with 16 SCLK cycles per conversion and no pipeline delay, making the AD7453BRTZ-REEL7 suitable for real-time acquisition of signals up to ~200 kHz bandwidth.
Does the AD7453BRTZ-REEL7 require an external reference voltage?
Yes, the AD7453BRTZ-REEL7 requires an external reference applied to the VREF pin. It accepts voltages from 100 mV to VDD, with 2.5 V specified for guaranteed performance. The reference directly defines the full-scale input range (VIN+ – VIN–), and must be decoupled with ≥0.1 µF capacitor to ensure stable gain accuracy in the AD7453BRTZ-REEL7.
Can the AD7453BRTZ-REEL7 interface directly with a microcontroller SPI port?
Yes, the AD7453BRTZ-REEL7 features an SPI-compatible serial interface (also supporting QSPI, MICROWIRE, and DSP protocols). Its SDATA output is 3-state, CS initiates conversion and frames reads, and SCLK clocks both data and internal conversion - allowing direct connection to standard microcontroller SPI masters without level shifters or glue logic.
What is the purpose of the VIN– pin on the AD7453BRTZ-REEL7?
The VIN– pin on the AD7453BRTZ-REEL7 establishes a programmable pseudo-ground reference for the VIN+ input. By applying a dc bias (e.g., 0 V or mid-supply), it enables rejection of common-mode noise and allows level-shifting of bipolar signals - eliminating the need for external op-amp circuitry in many transducer interface applications using the AD7453BRTZ-REEL7.
Is the AD7453BRTZ-REEL7 pin-compatible with other members of the AD745x family?
Yes, the AD7453BRTZ-REEL7 shares identical pinout and package (8-lead SOT-23) with AD7457BRTZ-REEL7 and AD7452BRTZ-REEL7. However, performance differs: AD7457 offers 250 kSPS and AD7452 provides 1 MSPS, so functional substitution requires validation of throughput, INL, and power requirements for the specific AD7453BRTZ-REEL7 use case.
AD7453BRTZ-REEL7 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:
- 12
- Sampling Rate (Per Second):
- 555k
- Number of Inputs:
- 1
- Input Type:
- Pseudo-Differential
- Data Interface:
- SPI, DSP
- Configuration:
- 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 ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- SOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7453BRTZ-REEL7 FAQ
1.How can I place an order for AD7453BRTZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7453BRTZ-REEL7 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 AD7453BRTZ-REEL7 reliable?
The price and inventory of AD7453BRTZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7453BRTZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7453BRTZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7453BRTZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7453BRTZ-REEL7?
AD7453BRTZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7453BRTZ-REEL7 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 AD7453BRTZ-REEL7?
For technical support, including AD7453BRTZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7453BRTZ-REEL7 requirements.
6.How does Aetrix verify that AD7453BRTZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7453BRTZ-REEL7 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 AD7453BRTZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7453BRTZ-REEL7?
All AD7453BRTZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7453BRTZ-REEL7, 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 AD7453BRTZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7453BRTZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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