ISL26712IHZ-T7A - 12-Bit 1MSPS SAR ADC | SOT-23-8 | Renesas
MPN: ISL26712IHZ-T7A ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.95 | $5.95 |
| 10 | $5.2 | $52.00 |
| 100 | $4.35 | $435.00 |
| 500 | $3.7 | $1,850.00 |
| 1,000 | $3.15 | $3,150.00 |
| 2,500 | $2.85 | $7,125.00 |
ISL26712IHZ-T7A Overview
What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a sampling ADC architecture that converts an input voltage to a digital code by performing a binary search against a precision internal DAC. SAR ADCs offer deterministic latency, low power consumption, and excellent linearity, making them the architecture of choice for industrial process control, multi-channel data-acquisition systems, battery-powered instrumentation, and precision sensor front-ends. They sit in the hierarchy of: ADC -> data converter -> mixed-signal IC -> semiconductor.
Key features of the ISL26712IHZ-T7A include 1 MSPS sampling rate on a single channel, fully-differential input, internal oscillator, low 4.6 mW power at full throughput, and a single 2.7 V to 5.25 V supply. The 8-pin SOT-23 footprint is one of the smallest in this speed/resolution class and is well suited to tight sensor boards.
The ISL26712IHZ-T7A shares its silicon with the 10-bit ISL26710 and 8-bit ISL26708 family members, and the -T7A suffix denotes a 250-piece tape-and-reel reel for prototyping and medium-volume assembly. The architecture uses a charge-redistribution DAC and on-chip sample-and-hold, achieving excellent AC and DC performance without an external reference bypass capacitor in most applications.
Typical applications include industrial process control loops (4-20 mA inputs read through a resistor), portable medical instrumentation (electrochemical sensors, pulse oximeters), handheld test equipment, factory-automation sensor modules, and consumer audio front-ends. Differential inputs let designers reject common-mode noise picked up by long sensor cables.
A key design trade-off to remember is that the ISL26712IHZ-T7A is single-channel and differential-only; systems requiring multiple single-ended channels should add an external analog MUX in front of the ADC. The SOT-23-8 thermal envelope is also small, so heat dissipation in high-temperature environments must be checked against the 4.6 mW dissipation at 1 MSPS with 5 V supply.
This page synthesizes distributor pricing, drop-in alternatives, comparison tables and design notes not assembled in the manufacturer datasheet alone, helping engineers shortlist the right 1 MSPS SAR ADC for production.
Drop-in alternatives for ISL26712IHZ-T7A — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ISL26712IHZ-T7A (same form factor and footprint) — differing in Resolution, Input Type, Package, Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ISL26712IHZ-T
✅ Drop-In✓ In Stock
$3.96 / Unit
View Datasheet →ISL26712IRTZ-T
✅ Drop-In📋 Reference alternative (not in catalog)
ISL26710IHZ-T7A
✅ Drop-In📋 Reference alternative (not in catalog)
ISL26708IHZ-T7A
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →HI5812JIBZ-T
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →HI5714/7CB-T
✅ Drop-In✓ In Stock
$9.2 / Unit
View Datasheet →ISL26712IHZ-T7A Maximum Ratings & Electrical Characteristics
| Resolution | 12 bit |
| Sampling Rate | 1 MSPS |
| ADC Architecture | SAR (Successive-Approximation Register) |
| Number of Input Channels | 1 |
| Input Type | Differential |
| Analog Supply Voltage | 2.7 V to 5.25 V |
| Power Dissipation at 1 MSPS, 5 V | 4.6 mW |
| Digital Interface | SPI-compatible serial |
| Package | SOT-23-8 (8-lead) |
| Mounting Type | Surface Mount |
| Internal Reference | Yes |
| Sample-and-Hold | On-chip |
| RoHS Status | Compliant (per Renesas product page family) |
| Lead-Free | Yes (per family datasheet) |
ISL26712IHZ-T7A Pin Configuration
| Pin 1 | SCLK — Serial clock input for SPI-compatible digital interface |
| Pin 2 | DOUT — Serial data output (digital conversion result) |
| Pin 3 | DIN — Serial data input (device configuration word) |
| Pin 4 | CS — Chip-select (active low) for SPI interface |
| Pin 5 | IN- — Negative differential analog input |
| Pin 6 | GND — Ground (analog and digital common) |
| Pin 7 | IN+ — Positive differential analog input |
| Pin 8 | VDD — Analog and digital supply, 2.7 V to 5.25 V |
Typical Applications
ISL26712IHZ-T7A is suitable for 7 applications: Industrial Process Control (4-20 mA Loop Readout), Portable Medical Instrumentation, Handheld Test & Measurement Equipment, Factory-Automation Sensor Modules, Sensor Interface Modules for IoT Edge Nodes, Audio Signal Chain Front-End, Renesas RL78 MCU Companion Sensor Board.
Industrial Process Control (4-20 mA Loop Readout)
The ISL26712IHZ-T7A fits industrial process-control loops because its fully-differential input stage can digitize the voltage developed across a precision 250 ohm sense resistor carrying a 4-20 mA loop current. The 12-bit resolution (4096 codes) yields approximately 4.9 microampere per code of loop-current resolution - more than enough to capture the full 4-20 mA span with margin for loop diagnostics. Its 1 MSPS sampling rate is well above the bandwidth of any industrial process variable (typically below 100 Hz), giving the design headroom for 10x oversampling and digital averaging to push noise-free resolution higher. Differential inputs reject the ground noise common in 4-20 mA loops that pass through cable trays with VFD-driven motors, and the SOT-23-8 footprint keeps the ADC off the input conditioning board in tight PLC analog modules.
Recommended
Portable Medical Instrumentation
Battery-powered diagnostic devices such as pulse oximeters, ECG front-ends and electrochemical glucose strips benefit from the ISL26712IHZ-T7A's low 4.6 mW dissipation at 1 MSPS with a 5 V supply, and even lower current when clocked down. The 12-bit SAR architecture delivers deterministic latency - critical for medical sampling - and the differential input pairs with biomedical signal-amplifier outputs that already present differential signals. The SOT-23-8 outline occupies less than 9 mm squared of PCB area, freeing board real-estate for the sensor and the wireless MCU. The same converter can run from a 3.3 V rail, simplifying power-tree design in a single-cell Li-ion handheld.
Recommended
Handheld Test & Measurement Equipment
Multimeters, oscilloscope front-ends and field-isolated data loggers benefit from the ISL26712IHZ-T7A's small SOT-23-8 package and deterministic SAR latency, which means a sample-and-display cycle has fixed conversion time, simplifying the UI's display refresh logic. The 1 MSPS rate supports waveform digitizers in the audio and sensor band, and the 12-bit resolution covers the dynamic range needed for most field-test work without external gain switching. Differential input pairs cleanly with resistive dividers that float relative to ground - useful when probing node voltages in a switch-mode power supply.
Recommended
Factory-Automation Sensor Modules
On a factory floor the ISL26712IHZ-T7A is well-suited for digitization of strain-gauge bridge outputs, thermocouples amplified by instrumentation amplifiers, and 0-10 V control loop signals. The 12-bit resolution resolves 2.5 mV at the 5 V full-scale input - exactly the LSB step needed to read sub-100 mV thermocouple signals through a thermocouple amplifier. Differential inputs reject the ground-bounce that is endemic in electrically noisy industrial cabinets. The 2.7 V to 5.25 V supply range lets the same converter run from a 3.3 V backplane in modern PLCs or a 5 V analog rail in legacy I/O modules.
Recommended
Sensor Interface Modules for IoT Edge Nodes
Battery-powered IoT edge nodes that harvest energy and only wake periodically benefit from the ISL26712IHZ-T7A's ability to idle at very low current between conversions, then burst-sample at 1 MSPS on demand for spectral analysis of vibration or acoustic events. The 12-bit resolution captures 72 dB of dynamic range - enough for vibration monitoring in industrial predictive-maintenance designs. The SOT-23-8 footprint allows the ADC to be placed directly next to the analog sensor, with a short trace that minimizes cable-pickup noise. A 1 MSPS SAR also avoids the >10 ms conversions of 24-bit sigma-delta converters, allowing fast edge triggering with sub-microsecond latency.
Recommended
Audio Signal Chain Front-End
Audio mixers, equalizers and instrument amplifiers can use the ISL26712IHZ-T7A as a low-latency digitizer for feedback paths where monitoring is required without delaying the audio. Its 12-bit dynamic range yields about 72 dB SNR - comparable to a CD-quality audio signal chain - and the 1 MSPS sample rate over-samples the 20 kHz audio band by 25x, making subsequent decimation filtering trivial. Differential inputs reject the chassis-loop hum common in audio installations. The SOT-23-8 package fits in the tight analog channel-card real estate of large mixers, where one ADC per channel is normal.
Recommended
Renesas RL78 MCU Companion Sensor Board
Renesas RL78 ultra-low-power microcontroller evaluation boards benefit from the ISL26712IHZ-T7A as a 'sensor expansion' companion, sharing the 3.3 V supply rail and providing fast deterministic data via SPI to a CPU that natively supports the SAR clock. The SOT-23-8 outline drops into the smallest expansion header footprints on RL78/G13 starter kits. With both the MCU and ADC from Renesas, designers get one point of contact for combined support, datasheet cross-references and qualification documentation.
Recommended
Recommended Products Summary
Engineering reference data for ISL26712IHZ-T7A — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISL26712IHZ-T | ISL26712IRTZ-T | ISL26710IHZ-T7A | ISL26708IHZ-T7A | HI5812JIBZ-T | HI5714/7CB-T |
|---|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | SOT-23-8 | SOT-23-8 | SOT-23-8 (MSOP-8 thermal pad variant) | SOT-23-8 | SOT-23-8 | SOT-23-8 | SOT-23-8 |
| Resolution | 12 bit | 12 bit | 12 bit | 10 bit | 8 bit | 12 bit | 12 bit |
| Reel Size (-T vs -T7A) | T7A = 250-piece reel | T = 2,500-piece reel | T = 2,500-piece reel | T7A = 250-piece reel | T7A = 250-piece reel | T = 2,500-piece reel | T = 2,500-piece reel |
Key Differentiators
- Smallest 12-bit 1 MSPS SAR ADC footprint in the Renesas catalog (vs ISL26712IRTZ-T)
- Full 12-bit resolution in the ISL26712 family while staying in SOT-23-8 (vs ISL26710IHZ-T7A)
- Deterministic SAR latency versus delta-sigma latency (vs CS5330A-KSZ)
Design Notes
Place a 1 µF X7R ceramic decoupling capacitor within 5 mm of the VDD pin, with a 100 nF NPO/COG capacitor directly across the pin in parallel; the SAR architecture draws a brief inrush on each conversion edge, and bypassing this transient is the difference between meeting 12-bit performance and seeing 0.5 LSB errors. (Severity: critical, source: general SAR ADC reference design practice)
Route the differential analog traces (IN+, IN-) as a 100-ohm differential pair on a continuous ground reference plane; keep them as short as practical and away from SPI clock/digital switching nodes; the SOT-23-8 has an exposed pad pin that should be soldered to a copper island stitched to the ground plane to keep digital return currents separated from the analog return path. (Severity: recommended, source: Renesas ISL26712 layout practice)
When using the ISL26712IHZ-T7A with a sensor bridge, do not lift the -IN input; both inputs must remain inside the input common-mode range of the ADC (roughly 0 V to VDD) - a common mistake is to bias IN- to 'mid-supply' by using a 100 kohm/100 kohm divider, but the divider is sensitive to any slight leak from a sensor amplifier and degrades effective CMRR by tens of dB. (Severity: critical, source: SAR ADC layout practice for differential ADCs)
Compliance Information
RoHS and lead-free compliance based on Renesas SOT-23-8 family datasheet page (May need to verify per-part halogen-free status with factory). Not AEC-Q100 qualified - not recommended for new automotive designs without qualification check.
