홈 데이터 컨버터 아날로그-디지털 컨버터(ADC) 정밀 ADC
홈
데이터 컨버터
아날로그-디지털 컨버터(ADC)
정밀 ADC

LM12H458

마지막 구매

140kSPS, 12비트 플러스 사인 데이터 수집 시스템(자체 보정 지원)

지금 주문
데이터 시트

LM12H458

마지막 구매
데이터 시트 지금 주문

제품 상세 정보

Resolution (bps) 12 Sample rate (max) (ksps) 182 Number of input channels 8 Interface type Parallel Architecture SAR Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 34 Analog supply (min) (V) 3 Analog supply voltage (max) (V) 5.5 SNR (dB) 77.5 Digital supply (min) (V) 3 Digital supply (max) (V) 5.5
Resolution (bps) 12 Sample rate (max) (ksps) 182 Number of input channels 8 Interface type Parallel Architecture SAR Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 34 Analog supply (min) (V) 3 Analog supply voltage (max) (V) 5.5 SNR (dB) 77.5 Digital supply (min) (V) 3 Digital supply (max) (V) 5.5
  • Three operating modes: 12-bit + sign, 8-bit + sign, and "watchdog"
  • Single-ended or differential inputs
  • Built-in Sample-and-Hold and 2.5V bandgap reference
  • Instruction RAM and event sequencer
  • 8-channel multiplexer
  • 32-word conversion FIFO
  • Programmable acquisition times and conversion rates
  • Self-calibration and diagnostic mode
  • 8- or 16-bit wide data bus microprocessor or DSP interface
  • Three operating modes: 12-bit + sign, 8-bit + sign, and "watchdog"
  • Single-ended or differential inputs
  • Built-in Sample-and-Hold and 2.5V bandgap reference
  • Instruction RAM and event sequencer
  • 8-channel multiplexer
  • 32-word conversion FIFO
  • Programmable acquisition times and conversion rates
  • Self-calibration and diagnostic mode
  • 8- or 16-bit wide data bus microprocessor or DSP interface

The LM12458, and LM12H458 are highly integrated Data Acquisition Systems. Operating on just 5V, they combine a fully-differential self-calibrating (correcting linearity and zero errors) 13-bit (12-bit + sign) analog-to-digital converter (ADC) and sample-and-hold (S/H) with extensive analog functions and digital functionality. Up to 32 consecutive conversions, using two's complement format, can be stored in an internal 32-word (16-bit wide) FIFO data buffer. An internal 8-word RAM can store the conversion sequence for up to eight acquisitions through the LM12(H)458's eight-input multiplexer. The obsolete LM12454 has a four-channel multiplexer, a differential multiplexer output, and a differential S/H input. The LM12(H)458 can also operate with 8-bit + sign resolution and in a supervisory "watchdog" mode that compares an input signal against two programmable limits.

Programmable acquisition times and conversion rates are possible through the use of internal clock-driven timers. The reference voltage input can be externally generated for absolute or ratiometric operation or can be derived using the internal 2.5V bandgap reference.

All registers, RAM, and FIFO are directly addressable through the high speed microprocessor interface to either an 8-bit or 16-bit data bus. The LM12(H)458 includes a direct memory access (DMA) interface for high-speed conversion data transfer.

Additional applications information can be found in applications notes AN-906, AN-947 and AN-949.

Key Specifications

(fCLK = 5 MHz; 8 MHz, H)

Resolution12-bit + sign or 8-bit + sign
13-bit conversion time8.8 µs, 5.5 µs (H) (max)
9-bit conversion time4.2 µs, 2.6 µs (H) (max)
13-bit Through-put rate88k samples/s (min),140k samples/s (H) (min)
Comparison time ("watchdog" mode)2.2 µs (max),1.4 µs (H) (max)
ILE±1 LSB (max)
VIN rangeGND to VA+
Power Consumption30 mW, 34 mW (H) (max)
Stand-by mode50 µW (typ)
Single supply3V to 5.5V

The LM12458, and LM12H458 are highly integrated Data Acquisition Systems. Operating on just 5V, they combine a fully-differential self-calibrating (correcting linearity and zero errors) 13-bit (12-bit + sign) analog-to-digital converter (ADC) and sample-and-hold (S/H) with extensive analog functions and digital functionality. Up to 32 consecutive conversions, using two's complement format, can be stored in an internal 32-word (16-bit wide) FIFO data buffer. An internal 8-word RAM can store the conversion sequence for up to eight acquisitions through the LM12(H)458's eight-input multiplexer. The obsolete LM12454 has a four-channel multiplexer, a differential multiplexer output, and a differential S/H input. The LM12(H)458 can also operate with 8-bit + sign resolution and in a supervisory "watchdog" mode that compares an input signal against two programmable limits.

Programmable acquisition times and conversion rates are possible through the use of internal clock-driven timers. The reference voltage input can be externally generated for absolute or ratiometric operation or can be derived using the internal 2.5V bandgap reference.

All registers, RAM, and FIFO are directly addressable through the high speed microprocessor interface to either an 8-bit or 16-bit data bus. The LM12(H)458 includes a direct memory access (DMA) interface for high-speed conversion data transfer.

Additional applications information can be found in applications notes AN-906, AN-947 and AN-949.

Key Specifications

(fCLK = 5 MHz; 8 MHz, H)

Resolution12-bit + sign or 8-bit + sign
13-bit conversion time8.8 µs, 5.5 µs (H) (max)
9-bit conversion time4.2 µs, 2.6 µs (H) (max)
13-bit Through-put rate88k samples/s (min),140k samples/s (H) (min)
Comparison time ("watchdog" mode)2.2 µs (max),1.4 µs (H) (max)
ILE±1 LSB (max)
VIN rangeGND to VA+
Power Consumption30 mW, 34 mW (H) (max)
Stand-by mode50 µW (typ)
Single supply3V to 5.5V
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유형 직함 날짜
* Data sheet LM12454/LM12458/LM12H458 12-Bit + Sign Data Acq System w/Self-Calibration datasheet (Rev. A) 2006/02/16

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치