Specifications
| Type | Description |
|---|---|
| Part Number | AD7402-8BRIZ-RL |
| Manufacturer | Analog Devices |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | 8-lead wide-body SOIC, increased creepage |
| Component Type | Other |
| Resolution | 16 bits; filter output truncated to 16 bits |
| Internal Clock Rate | 10 MHz; internal clock |
| Integral Nonlinearity | typ ±1 LSB, max ±5 LSB; VDD1=4.5-5.5 V, VDD2=3-5.5 V, VIN+=-250 mV to +250 mV, VIN-=0 V, TA=-40°C to +105°C, sinc3 filter, 256 decimation rate |
| Differential Nonlinearity | typ ±0.99 LSB; guaranteed no missed codes to 16 bits |
| Offset Error | typ ±0.2 mV, max ±0.75 mV; static performance |
| Offset Drift vs Temperature | typ 1.7 µV/°C, max 5 µV/°C; TA=-40°C to +105°C |
| Offset Drift vs VDD1 | typ 85 µV/V; VDD1 variation |
| Gain Error | typ 0.2 %FSR, max ±0.5 %FSR; static performance |
| Gain Error Drift vs Temperature | typ 18 ppm/°C, max 32 ppm/°C; TA=-40°C to +105°C |
| Gain Error Drift vs Temperature | typ 11 µV/°C, max 20 µV/°C; TA=-40°C to +105°C |
| Gain Error Drift vs VDD1 | typ 0.2 mV/V; VDD1 variation |
| Analog Input Voltage Range | min -320 mV, max +320 mV; full-scale analog input range |
| Nominal Differential Input Signal Range | ±250 mV; general description operating input signal |
| Input Common-Mode Voltage Range | -200 mV to +300 mV; analog input |
| Dynamic Input Current | typ ±19 µA, max ±28 µA; VIN+=±250 mV, VIN-=0 V |
| Dynamic Input Current | typ 0.05 µA; VIN+=0 V, VIN-=0 V |
| Input Capacitance | typ 14 pF; analog input |
| Signal-to-Noise and Distortion Ratio | min 74 dB, typ 82 dB; VIN+=35 Hz |
| Signal-to-Noise Ratio | min 86 dB, typ 87 dB; VIN+=35 Hz; 39 kSPS reconstruction with appropriate digital filter noted in description |
| Total Harmonic Distortion | typ -84 dB; VIN+=35 Hz |
| Spurious-Free Dynamic Range | typ -84 dB; peak harmonic or spurious noise, VIN+=35 Hz |
| Effective Number of Bits | min 12 bits, typ 13.5 bits; VIN+=35 Hz |
| Noise Free Code Resolution | typ 14 bits; dynamic specifications |
| Isolation Transient Immunity | min 25 kV/µs, typ 30 kV/µs; isolation transient immunity |
| Output High Voltage | min VDD2 - 0.1 V; IO=-200 µA |
| Output Low Voltage | max 0.4 V; IO=+200 µA |
| VDD1 Supply Voltage | min 4.5 V, max 5.5 V; power requirements |
| VDD2 Supply Voltage | min 3 V, max 5.5 V; power requirements |
| VDD1 Supply Current | typ 26 mA, max 31 mA; VDD1=5.5 V |
| VDD2 Supply Current | typ 6 mA, max 7 mA; VDD2=5.5 V |
| VDD2 Supply Current | typ 4.5 mA, max 5.5 mA; VDD2=3.3 V |
| Power Dissipation | typ 209 mW; VDD1=VDD2=5.5 V |
| Master Clock Output Frequency | min 9.4 MHz, typ 10 MHz, max 10.6 MHz; VDD1=4.5-5.5 V, VDD2=3-5.5 V, TA=-40°C to +105°C |
| Master Clock Mark Space Ratio | 45/55 to 55/45; clock output |
| Data Access Time After MCLKOUT Rising Edge | max ±10 ns; measured with ±200 µA load and 25 pF load capacitance |
| Data Hold Time After MCLKOUT Falling Edge | max 44 ns; measured with ±200 µA load and 25 pF load capacitance |
| Master Clock Low Time | min 33 ns; timing specifications |
| Master Clock High Time | min 33 ns; timing specifications |
| Input-to-Output Resistance | typ 10^12 Ω; device considered 2-terminal; pins 1-4 shorted and pins 5-8 shorted |
| Input-to-Output Capacitance | typ 2.2 pF; f=1 MHz; device considered 2-terminal |
| Junction-to-Ambient Thermal Resistance | typ 105 °C/W; thermocouple at center of package underside, 4-layer board with thin traces |
| Input-to-Output Momentary Withstand Voltage | min 5000 Vrms; 1-minute duration |
| Minimum External Air Gap Clearance | min 8.1 mm; measured input terminals to output terminals, shortest distance through air |
| Minimum External Tracking Creepage | min 8.1 mm; measured input terminals to output terminals, shortest distance along body |
| Minimum Internal Clearance | min 0.034 mm; insulation distance through insulation |
| Comparative Tracking Index | >400 V; DIN IEC 112/VDE 0303 Part 1 |
| Isolation Group | Group II; Material Group per DIN VDE 0110, 1/89, Table I |
| UL Isolation Voltage | 5000 Vrms; UL 1577 Component Recognition, single protection |
| CSA Basic Insulation Working Voltage | 810 Vrms (1145 Vpeak) maximum; CSA 60950-1-07 and IEC 60950-1, pollution degree 2, Material Group III |
| CSA Reinforced Insulation Working Voltage | 405 Vrms (583 Vpeak) maximum; CSA 60950-1-07 and IEC 60950-1, pollution degree 2, Material Group III |
| IEC 60601-1 Reinforced Insulation Working Voltage | 250 Vrms (353 Vpeak) maximum; reinforced insulation per IEC 60601-1 |
| VDE Reinforced Insulation Working Voltage | 1250 Vpeak; DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 |
| UL File Number | E214100; UL recognition |
| CSA File Number | 205078; CSA approval |
| VDE File Number | 2471900-4880-0001; VDE certification |
| UL Production Proof Test Voltage | >=6000 Vrms for 1 second; current leakage detection limit=15 µA |
| VDE Production Proof Test Voltage | >=2344 Vpeak for 1 second; partial discharge detection limit=5 pC |
| Installation Classification | I to IV; rated mains voltage <=300 Vrms |
| Installation Classification | I to IV; rated mains voltage <=450 Vrms |
| Installation Classification | I to IV; rated mains voltage <=600 Vrms |
| Installation Classification | I to IV; rated mains voltage <=1000 Vrms |
| Climatic Classification | 40/105/21; DIN V VDE V 0884-10 insulation characteristics |
| Pollution Degree | 2; DIN VDE 0110, Table 1 |
| Maximum Working Insulation Voltage | 1250 Vpeak; VDE V 0884-10 insulation characteristics |
| Input-to-Output Test Voltage Method B1 | 2344 Vpeak; VIORM x 1.875 = VPR, 100% production test, tm=1 second, partial discharge <5 pC |
| Input-to-Output Test Voltage Method A After Environmental Test Subgroup 1 | 2000 Vpeak; VIORM x 1.6 = VPR, tm=60 seconds, partial discharge <5 pC |
| Input-to-Output Test Voltage Method A After Safety Test Subgroup 2 or 3 | 1500 Vpeak; VIORM x 1.2 = VPR, tm=60 seconds, partial discharge <5 pC |
| Highest Allowable Overvoltage | 8000 Vpeak; transient overvoltage, tTR=10 seconds |
| Surge Isolation Voltage | 12000 Vpeak; 1.2 µs rise time, 50 µs 50% fall time |
| Safety Limiting Case Temperature | 150°C; maximum allowed in event of failure |
| Safety Limiting Power Dissipation | 1.19 W; Side 1 PVDD1 and Side 2 PVDD2 power dissipation, maximum allowed in event of failure |
| Insulation Resistance | >10^9 Ω; at TS, VIO=500 V |
| Absolute Maximum VDD1 to GND1 | -0.3 V to +6.5 V; TA=25°C unless otherwise noted |
| Absolute Maximum VDD2 to GND2 | -0.3 V to +6.5 V; TA=25°C unless otherwise noted |
| Absolute Maximum Analog Input Voltage to GND1 | -1 V to VDD1 + 0.3 V; TA=25°C unless otherwise noted |
| Absolute Maximum Output Voltage to GND2 | -0.3 V to VDD2 + 0.3 V; TA=25°C unless otherwise noted |
| Absolute Maximum Input Current | ±10 mA; any pin except supplies; transient currents up to 100 mA do not cause SCR latch-up |
| Operating Temperature Range | -40°C to +105°C; absolute maximum ratings and product operating range |
| Storage Temperature Range | -65°C to +150°C; absolute maximum ratings |
| Junction Temperature | 150°C; absolute maximum ratings |
| Pb-Free Reflow Soldering Temperature | 260°C; absolute maximum ratings |
| ESD Rating | 2 kV; absolute maximum ratings |
| FICDM ESD Rating | ±1250 V; JESD22-C101; RC network 1 Ω, package capacitance, Class IV |
| HBM ESD Rating | ±4000 V; ESDA/JEDEC JS-001-2011; RC network 1.5 kΩ, 100 pF, Class 3A |
| Maximum Continuous Working Voltage AC Bipolar | 1250 Vpeak; 20-year minimum lifetime, VDE approved working voltage |
| Maximum Continuous Working Voltage AC Unipolar | 1250 Vpeak; 20-year minimum lifetime |
| Maximum Continuous Working Voltage DC | 1250 Vpeak; 20-year minimum lifetime |
| Datasheet Status | request_only |
Product Overview
AD7402-8BRIZ-RL is an Analog Devices isolated sigma-delta modulator for Signal_Chain applications requiring a low-level differential analog input across an isolation barrier. Its nominal differential input signal range is ±250 mV, with a full-scale analog input range from -320 mV to +320 mV and an input common-mode range from -200 mV to +300 mV.
The device uses a 10 MHz internal clock and provides a master clock output specified from 9.4 MHz to 10.6 MHz. With the filter output truncated to 16 bits, static performance includes typical ±1 LSB integral nonlinearity, typical ±0.99 LSB differential nonlinearity with no missed codes to 16 bits, and typical ±0.2 mV offset error.
The package is an 8-lead wide-body SOIC with increased creepage. Isolation-related parameters include 5000 Vrms input-to-output momentary withstand voltage for 1 minute, 8.1 mm minimum external clearance and creepage, 25 kV/µs minimum isolation transient immunity, and 1250 Vpeak maximum working insulation voltage. Operating temperature range is -40°C to +105°C, with Pb-free reflow soldering temperature specified at 260°C.
Key Features
- 16-bit filter output from isolated sigma-delta modulation
- 10 MHz internal clock with specified MCLKOUT frequency range
- Nominal ±250 mV differential input signal range
- -320 mV to +320 mV full-scale analog input range
- 5000 Vrms input-to-output momentary withstand voltage
- 8.1 mm minimum external clearance and creepage
- 25 kV/µs minimum isolation transient immunity
- VDD1 4.5 V to 5.5 V, VDD2 3 V to 5.5 V
- -40°C to +105°C operating temperature range
- 1250 Vpeak maximum working insulation voltage
Typical Applications
- Isolated differential signal measurement
- Signal-chain isolation interfaces
- Sigma-delta reconstruction filtering
- High-voltage barrier monitoring
- Low-level analog input conversion
- Isolated data output designs
Procurement Notes
When requesting a quote for AD7402-8BRIZ-RL, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of device is AD7402-8BRIZ-RL?
AD7402-8BRIZ-RL is an Analog Devices isolated sigma-delta modulator in the Signal_Chain category. The extracted datasheet facts identify a 16-bit truncated filter output, 10 MHz internal clock, and an 8-lead wide-body SOIC package with increased creepage.
What input range does AD7402-8BRIZ-RL support?
The nominal differential input signal range is ±250 mV. The full-scale analog input voltage range is specified from -320 mV to +320 mV, and the analog input common-mode voltage range is -200 mV to +300 mV.
What are the main supply voltage requirements?
The VDD1 supply voltage range is 4.5 V to 5.5 V, while VDD2 operates from 3 V to 5.5 V. Supply current is specified at 26 mA typical for VDD1 at 5.5 V and 6 mA typical for VDD2 at 5.5 V.
What isolation ratings are specified for this modulator?
The device has a 5000 Vrms input-to-output momentary withstand voltage for 1 minute, 8.1 mm minimum external clearance and creepage, 25 kV/µs minimum isolation transient immunity, and 1250 Vpeak maximum working insulation voltage.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: August 17, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.