Rad Tolerant 8-Channel SAR ADC Evaluation Board
The ISL71148MNZEV1Z board evaluates the operation of the ISL71148M radiation tolerant 8-channel high precision 14-bit, 900ksps/480ksps SAR ADC. The evaluation board is...
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Overview
Description
The ISL71148M is a radiation tolerant 8-channel high precision 14-bit, 900/480ksps SAR analog-to-digital converter (ADC). The ADC core is preceded by eight fully differential analog input channels, a buffered 8-to-1 multiplexer, and a programmable gain amplifier (PGA). The device features a peak SNR of 83.2dBFS when operating at 900ksps. With the PGA enabled, sampling rates up to 480ksps are supported. The PGA can be bypassed to increase the sample rate to 900ksps.
The product features 900/480ksps throughput with no data latency, excellent linearity, and dynamic accuracy. The ISL71148M offers a high-speed SPI-compatible serial interface that supports logic ranging from 2.2V to 3.6V using a separate digital I/O supply pin. The device is available in a 48-lead thin quad flat-pack (TQFP) space plastic.
The ISL71148M offers a separate low-power mode (LPM) pin that reduces power dissipation at lower sample rates. An external reference with a supported input range of 2.4V to 2.6V determines the analog input signal range.
Features
- Qualified to Renesas Rad Tolerant Screening and QCI Flow (Technical Brief)
- 8 buffered differential analog input channels with multiplexer
- Bypassable PGA with selectable gain (1 ≤ G ≤ 16)
- Fully differential bipolar operation
- Channel scan sequencer
- Full throughput rate with no data latency
- Excellent linearity: ±0.2 LSB DNL, ±0.4 LSB INL
- Low noise: 83.2dBFS (PGA bypassed), 77dBFS SNR (PGA Gain = 2)
- 5V AVCC supply and 2.5V/3.3V DVCC supply
- Analog input impedance: >1GΩ, <5pF
- Wide 50MHz -3dB input bandwidth
- Low power mode operation at lower sample rates
- High-speed SPI-compatible serial I/O
- Full military temperature range operation TA = -55 °C to +125 °C
- TID Radiation Lot Acceptance Testing (LDR: 0.01rad(Si)/s)
- ISL71148M30NZ: 30krad(Si)
- ISL71148M50NZ: 50krad(Si)
- SEE Characterization
- No DSEE for AVCC = 6.2V, DVCC = 4.6V, and VREF = 3.6V at 46MeV•cm2/mg
- SEFI <3.1μm2 at 46MeV•cm2/mg
Comparison
Applications
- Precision signal processing
- Propulsion, payload systems
- High-end industrial
- Engine control
- Down-hole drilling
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 2.16 MB | |
| Technical Brief | PDF 356 KB | |
| Brochure | PDF 5.02 MB | |
| Application Note | PDF 514 KB | |
| Application Note | PDF 1.47 MB | |
| White Paper | PDF 533 KB | |
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
ISL71148M30NZ Active Samples Available |
TQFP | Tray | 25 | NA | Get Samples, |
ISL71148M50NZ Active Samples Available |
TQFP | Tray | 25 | NA | Get Samples, |
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