Overview
Description
The ISL71148SLH is a radiation hardened 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 ISL71148SLH 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 ISL71148SLH 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 Hard QML-P Equivalent Screening and QCI Flow (Technical Brief)
- All screening and QCI are in accordance with MIL-PRF-38535 Class-P
- 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 Rad Hard Assurance (RHA) testing
- LDR (≤10mrad(Si)/s): 75krad(Si)
- SEE Characterization
- No DSEE for AVCC = 6.2V, DVCC = 4.6V, and VREF = 3.6V at 86MeV•cm2/mg
- SEFI <3.1μm2 at 86MeV•cm2/mg
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 2.22 MB | |
| Report | PDF 478 KB | |
| Report | PDF 907 KB | |
| Technical Brief | PDF 229 KB | |
| Application Note | PDF 514 KB | |
| Application Note | PDF 1.47 MB | |
| White Paper | PDF 533 KB | |
| Application Note | PDF 224 KB | |
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