ADS125H01

AKTIV

1-kanaliger Delta-Sigma-ADC, 24 Bit, 40 kSPS, mit rauscharmem PGA und Eingang für ±20 V

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Datenblatt

document-pdfAcrobat ADS125H01 ±20-V Input, 40-kSPS, 24-Bit, Delta-Sigma ADC datasheet (Rev. A) (Englisch) PDF | HTML

ADS125H01

AKTIV

Jetzt bestellen

Produktdetails

Resolution (Bits)

24

Sample rate (max) (ksps)

40

Number of input channels

1

Interface type

SPI

Architecture

Delta-Sigma

Input type

Differential, Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External

Input voltage range (max) (V)

15.5

Input voltage range (min) (V)

0

Features

50/60 Hz Rejection, Oscillator, PGA, Small Size

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

45

Analog supply voltage (min) (V)

-18, 0

Analog supply voltage (max) (V)

18, 36

Digital supply (min) (V)

2.7

Digital supply (max) (V)

5.25

Resolution (Bits)

24

Sample rate (max) (ksps)

40

Number of input channels

1

Interface type

SPI

Architecture

Delta-Sigma

Input type

Differential, Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External

Input voltage range (max) (V)

15.5

Input voltage range (min) (V)

0

Features

50/60 Hz Rejection, Oscillator, PGA, Small Size

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

45

Analog supply voltage (min) (V)

-18, 0

Analog supply voltage (max) (V)

18, 36

Digital supply (min) (V)

2.7

Digital supply (max) (V)

5.25

VQFN (RHB)

32

25 mm² (5 mm × 5 mm)

±20-V input, 24-bit delta-sigma ADC
Programmable data rate: 2.5 SPS to 40 kSPS
High-voltage, 1-GΩ input impedance PGA:
- Differential input range: up to ±20 V
- Absolute input range: up to ±15.5 V
- Programmable attenuation and gain:
  - 0.125 to 128
High-performance ADC:
- Noise: 45 nV_RMS (gain = 128, 20 SPS)
- CMRR: 105 dB
- 50-Hz and 60-Hz rejection: 95 dB
- Offset drift: 10 nV/°C
- Gain drift: 1 ppm/°C
- INL: 2 ppm
Integrated features and diagnostics:
- Internal oscillator
- Signal and reference voltage monitors
- Cyclic redundancy check (CRC)
Power supplies:
- AVDD: 4.75 V to 5.25 V
- DVDD: 2.7 V to 5.25 V
- HVDD: ±5 V to ±18 V
Operating temperature: –40°C to +125°C
5-mm × 5-mm VQFN package

±20-V input, 24-bit delta-sigma ADC
Programmable data rate: 2.5 SPS to 40 kSPS
High-voltage, 1-GΩ input impedance PGA:
- Differential input range: up to ±20 V
- Absolute input range: up to ±15.5 V
- Programmable attenuation and gain:
  - 0.125 to 128
High-performance ADC:
- Noise: 45 nV_RMS (gain = 128, 20 SPS)
- CMRR: 105 dB
- 50-Hz and 60-Hz rejection: 95 dB
- Offset drift: 10 nV/°C
- Gain drift: 1 ppm/°C
- INL: 2 ppm
Integrated features and diagnostics:
- Internal oscillator
- Signal and reference voltage monitors
- Cyclic redundancy check (CRC)
Power supplies:
- AVDD: 4.75 V to 5.25 V
- DVDD: 2.7 V to 5.25 V
- HVDD: ±5 V to ±18 V
Operating temperature: –40°C to +125°C
5-mm × 5-mm VQFN package

The ADS125H01 is a ±20-V input, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The ADC features a low-noise programmable gain amplifier (PGA), a clock oscillator, and signal or reference out-of-range monitors.

The integration of a wide input range, ±18-V supply PGA and an ADC into a single package reduces board area up to 50% compared to discrete solutions.

Programmable attenuation and gain of 0.125 to 128 (corresponding to an equivalent input range from ±20 V to ±20 mV) eliminates the need for an external attenuator or external gain stages. A 1-GΩ minimum input impedance reduces error resulting from sensor loading. Additionally, the low-noise and low-drift performance allow direct connections to strain-gauge bridge and thermocouple sensors that are affected by high common-mode voltage.

The digital filter is programmable over a wide range from 2.5 SPS to 40 kSPS. Attenuation of 50-Hz and 60-Hz line cycle noise for data rates ≤ 50 SPS or 60 SPS reduces measurement error. In most data rates, the filter provides no-latency conversion data for high data throughput during external channel sequencing.

The ADS125H01 is housed in a 5-mm × 5-mm VQFN package and is fully specified over the –40°C to +125°C temperature range.

The ADS125H01 is a ±20-V input, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The ADC features a low-noise programmable gain amplifier (PGA), a clock oscillator, and signal or reference out-of-range monitors.

The integration of a wide input range, ±18-V supply PGA and an ADC into a single package reduces board area up to 50% compared to discrete solutions.

Programmable attenuation and gain of 0.125 to 128 (corresponding to an equivalent input range from ±20 V to ±20 mV) eliminates the need for an external attenuator or external gain stages. A 1-GΩ minimum input impedance reduces error resulting from sensor loading. Additionally, the low-noise and low-drift performance allow direct connections to strain-gauge bridge and thermocouple sensors that are affected by high common-mode voltage.

The digital filter is programmable over a wide range from 2.5 SPS to 40 kSPS. Attenuation of 50-Hz and 60-Hz line cycle noise for data rates ≤ 50 SPS or 60 SPS reduces measurement error. In most data rates, the filter provides no-latency conversion data for high data throughput during external channel sequencing.

The ADS125H01 is housed in a 5-mm × 5-mm VQFN package and is fully specified over the –40°C to +125°C temperature range.

filter

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Design und Entwicklung

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