Datasheet LTC2333-18 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Buffered 8-Channel, 18-Bit, 800ksps Differential ±10.24V ADC with 30VP-P Common Mode Range |
| Páginas / Página | 40 / 1 — FEATURES. DESCRIPTION. Eight Buffered Multiplexed Channels. 800ksps … |
| Formato / tamaño de archivo | PDF / 2.2 Mb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. Eight Buffered Multiplexed Channels. 800ksps Throughput. 500pA/12nA Maximum Input Leakage at 85°C/125°C
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LTC2333-18 Buffered 8-Channel, 18-Bit, 800ksps Differential ±10.24V ADC with 30VP-P Common Mode Range
FEATURES DESCRIPTION
n
Eight Buffered Multiplexed Channels
The LTC®2333-18 is an 18-bit, low noise 8-channel multi- n
800ksps Throughput
plexed successive approximation register (SAR) ADC with n
500pA/12nA Maximum Input Leakage at 85°C/125°C
buffered differential, wide common mode range picoamp n
±3LSB INL (Maximum ±10.24V Range)
inputs. Operating from a 5V low voltage supply, flexible n
Guaranteed 18-Bit, No Missing Codes
high voltage supplies, and using the internal reference n
Differential, Wide Common Mode Range Inputs
and buffer, this SoftSpan™ ADC can be configured on a n
8-Channel Multiplexer with SoftSpan Input Ranges:
conversion-by-conversion basis to accept ±10.24V, 0V to
±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V
10.24V, ±5.12V, or 0V to 5.12V signals on any channel.
±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V
Alternately, the ADC may be programmed to cycle through n
96.4dB Single-Conversion SNR (Typical)
a sequence of channels and ranges without further user n
−110dB THD (Typical) at f
intervention.
IN = 2kHz
n
128dB CMRR, –125dB Active Crosstalk (Typical)
The integrated picoamp-input analog buffers, wide input n
420ns Step Response (Full-Scale, 0.005% Settling)
common mode range and 128dB CMRR of the LTC2333- n
Rail-to-Rail Input Overdrive Tolerance
18 allow the ADC to directly digitize a variety of signals n Programmable Sequencer with No-Latency Control using minimal board space and power. This input signal n Integrated Reference and Buffer (4.096V) flexibility, combined with ±3LSB INL, no missing codes n SPI CMOS (1.8V to 5V) and LVDS Serial I/O at 18 bits, and 96.4dB SNR, makes the LTC2333-18 an n 268mW Power Dissipation (Typical) ideal choice for many high voltage applications requiring n 48-Lead (7mm × 7mm) LQFP Package wide dynamic range. The LTC2333-18 supports pin-selectable SPI CMOS (1.8V
APPLICATIONS
to 5V) and LVDS serial interfaces. n Direct Sensor Measurement L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n SoftSpan is a trademark of Analog Devices, Inc. All other trademarks are the property of their Programmable Logic Controllers respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235. n Industrial Process Control n Test and Measurement
TYPICAL APPLICATION
15V 5V 1.8V TO 5V
Integral Nonlinearity vs
0.1µF 0.1µF 2.2µF 0.1µF
Output Code and Channel
CMOS OR LVDS I/O INTERFACE 2.0 ±10.24V RANGE FULLY BUFFERS V TRUE BIPOLAR DRIVE (IN– = 0V) CC VDD VDDLBYP OVDD LVDS/CMOS 1.5 ARBITRARY DIFFERENTIAL PD ALL CHANNELS +10V +5V 1.0 IN0+ LTC2333-18 0V 0V IN0– SDO 0.5 –10V SCKO –5V • • • 18-BIT SCKI 0 MUX TRUE BIPOLAR UNIPOLAR SAMPLING SDI –0.5 +10V +10V ADC CS INL ERROR (LSB) BUSY SAMPLE 0V 0V CNV –1.0 IN7+ CLOCK –10V –10V IN7– –1.5 DIFFERENTIAL INPUTS IN+/IN– WITH V –2.0 EE REFBUF REFIN GND WIDE INPUT COMMON MODE RANGE –131072 –65536 0 65536 131072 233318 TA01a EIGHT BUFFERED OUTPUT CODE 47µF 0.1µF CHANNELS 0.1µF 233318 TA01b –15V 233318f For more information www.linear.com/LTC2333-18 1
FEATURES DESCRIPTION
n
Eight Buffered Multiplexed Channels
The LTC®2333-18 is an 18-bit, low noise 8-channel multi- n
800ksps Throughput
plexed successive approximation register (SAR) ADC with n
500pA/12nA Maximum Input Leakage at 85°C/125°C
buffered differential, wide common mode range picoamp n
±3LSB INL (Maximum ±10.24V Range)
inputs. Operating from a 5V low voltage supply, flexible n
Guaranteed 18-Bit, No Missing Codes
high voltage supplies, and using the internal reference n
Differential, Wide Common Mode Range Inputs
and buffer, this SoftSpan™ ADC can be configured on a n
8-Channel Multiplexer with SoftSpan Input Ranges:
conversion-by-conversion basis to accept ±10.24V, 0V to
±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V
10.24V, ±5.12V, or 0V to 5.12V signals on any channel.
±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V
Alternately, the ADC may be programmed to cycle through n
96.4dB Single-Conversion SNR (Typical)
a sequence of channels and ranges without further user n
−110dB THD (Typical) at f
intervention.
IN = 2kHz
n
128dB CMRR, –125dB Active Crosstalk (Typical)
The integrated picoamp-input analog buffers, wide input n
420ns Step Response (Full-Scale, 0.005% Settling)
common mode range and 128dB CMRR of the LTC2333- n
Rail-to-Rail Input Overdrive Tolerance
18 allow the ADC to directly digitize a variety of signals n Programmable Sequencer with No-Latency Control using minimal board space and power. This input signal n Integrated Reference and Buffer (4.096V) flexibility, combined with ±3LSB INL, no missing codes n SPI CMOS (1.8V to 5V) and LVDS Serial I/O at 18 bits, and 96.4dB SNR, makes the LTC2333-18 an n 268mW Power Dissipation (Typical) ideal choice for many high voltage applications requiring n 48-Lead (7mm × 7mm) LQFP Package wide dynamic range. The LTC2333-18 supports pin-selectable SPI CMOS (1.8V
APPLICATIONS
to 5V) and LVDS serial interfaces. n Direct Sensor Measurement L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n SoftSpan is a trademark of Analog Devices, Inc. All other trademarks are the property of their Programmable Logic Controllers respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235. n Industrial Process Control n Test and Measurement
TYPICAL APPLICATION
15V 5V 1.8V TO 5V
Integral Nonlinearity vs
0.1µF 0.1µF 2.2µF 0.1µF
Output Code and Channel
CMOS OR LVDS I/O INTERFACE 2.0 ±10.24V RANGE FULLY BUFFERS V TRUE BIPOLAR DRIVE (IN– = 0V) CC VDD VDDLBYP OVDD LVDS/CMOS 1.5 ARBITRARY DIFFERENTIAL PD ALL CHANNELS +10V +5V 1.0 IN0+ LTC2333-18 0V 0V IN0– SDO 0.5 –10V SCKO –5V • • • 18-BIT SCKI 0 MUX TRUE BIPOLAR UNIPOLAR SAMPLING SDI –0.5 +10V +10V ADC CS INL ERROR (LSB) BUSY SAMPLE 0V 0V CNV –1.0 IN7+ CLOCK –10V –10V IN7– –1.5 DIFFERENTIAL INPUTS IN+/IN– WITH V –2.0 EE REFBUF REFIN GND WIDE INPUT COMMON MODE RANGE –131072 –65536 0 65536 131072 233318 TA01a EIGHT BUFFERED OUTPUT CODE 47µF 0.1µF CHANNELS 0.1µF 233318 TA01b –15V 233318f For more information www.linear.com/LTC2333-18 1