Datasheet LTC1408-12 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 6 Channel, 12-Bit, 600ksps Simultaneous Sampling ADC with Shutdown |
| Pages / Page | 20 / 1 — FEATURES. DESCRIPTIO. 600ksps ADC with 6 Simultaneously Sampled. … |
| File Format / Size | PDF / 282 Kb |
| Document Language | English |
FEATURES. DESCRIPTIO. 600ksps ADC with 6 Simultaneously Sampled. Differential Inputs. 100ksps Throughput per Channel. 72dB SINAD
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Text Version of Document
LTC1408-12 6 Channel, 12-Bit, 600ksps Simultaneous Sampling ADC
U
with Shutdown
FEATURES DESCRIPTIO
■
600ksps ADC with 6 Simultaneously Sampled
The LTC®1408-12 is a 12-bit, 600ksps ADC with six
Differential Inputs
simultaneously sampled differential inputs. The device ■
100ksps Throughput per Channel
draws only 5mA from a single 3V supply, and comes in a ■
72dB SINAD
tiny 32 pin (5mm × 5mm) QFN package. A SLEEP shut- ■
Low Power Dissipation: 15mW
down feature further reduces power consumption to ■
3V Single Supply Operation
6µW. The combination of low power and tiny package ■ 2.5V Internal Bandgap Reference, Can be Overdriven makes the LTC1408-12 suitable for portable applications. with External Reference The LTC1408-12 contains six separate differential inputs ■ 3-Wire SPI-Compatible Serial Interface that are sampled simultaneously on the rising edge of the ■ 0V to 2.5V Unipolar, or ±1.25V Bipolar Differential CONV signal. These six sampled inputs are then Input Range converted at a rate of 100ksps per channel. ■ SLEEP (6µW) Shutdown Mode The 83dB common mode rejection allows users to ■ NAP (3.3mW) Shutdown Mode eliminate ground loops and common mode noise by ■ Internal Conversion Triggered by CONV measuring signals differentially from the source. ■ 83dB Common Mode Rejection ■ Tiny 32-Pin (5mm × 5mm) QFN Package The device converts 0V to 2.5V unipolar inputs differen- tially, or
U
±1.25V bipolar inputs also differentially,
APPLICATIO S
depending on the state of the BIP pin. Any analog input may swing rail-to-rail as long as the differential input ■ Multiphase Power Measurement range is maintained. ■ Multiphase Motor Control The conversion sequence can be abbreviated to convert ■ Data Acquisition Systems fewer than six channels, depending on the logic state of ■ Uninterruptable Power Supplies the SEL2, SEL1 and SEL0 inputs. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. The serial interface sends out the six conversion results in Protected by U.S. Patents including 6084440, 6522187. 96 clocks for compatibility with standard serial interfaces.
W BLOCK DIAGRA
CH4– CH4+ CH5– CH5+ CH2– CH2+ CH3– CH3+ CH0– CH0+ CH1– CH1+ 10µF 3V VCC VDD 21 20 19 18 17 16 15 14 12 11 10 9 8 7 6 5 4 24 25 13 + + + + + + 12-BIT LATCH 0 – – – – – – OV 3 DD 12-BIT LATCH 1 THREE- 3V S AND H S AND H S AND H S AND H S AND H S AND H STATE 600ksps 12-BIT LATCH 2 SERIAL 1 SD0 12-BIT ADC 12-BIT LATCH 3 OUTPUT 0.1µF 12-BIT LATCH 4 PORT 2 12-BIT LATCH 5 OGND MUX TIMING 30 CONV 2.5V LOGIC REFERENCE 32 SCK 31 DGND GND VREF 33 22 23 29 26 27 28 10µF BIP SEL2 SEL1 SEL0 235114 TA01 140812f 1
U
with Shutdown
FEATURES DESCRIPTIO
■
600ksps ADC with 6 Simultaneously Sampled
The LTC®1408-12 is a 12-bit, 600ksps ADC with six
Differential Inputs
simultaneously sampled differential inputs. The device ■
100ksps Throughput per Channel
draws only 5mA from a single 3V supply, and comes in a ■
72dB SINAD
tiny 32 pin (5mm × 5mm) QFN package. A SLEEP shut- ■
Low Power Dissipation: 15mW
down feature further reduces power consumption to ■
3V Single Supply Operation
6µW. The combination of low power and tiny package ■ 2.5V Internal Bandgap Reference, Can be Overdriven makes the LTC1408-12 suitable for portable applications. with External Reference The LTC1408-12 contains six separate differential inputs ■ 3-Wire SPI-Compatible Serial Interface that are sampled simultaneously on the rising edge of the ■ 0V to 2.5V Unipolar, or ±1.25V Bipolar Differential CONV signal. These six sampled inputs are then Input Range converted at a rate of 100ksps per channel. ■ SLEEP (6µW) Shutdown Mode The 83dB common mode rejection allows users to ■ NAP (3.3mW) Shutdown Mode eliminate ground loops and common mode noise by ■ Internal Conversion Triggered by CONV measuring signals differentially from the source. ■ 83dB Common Mode Rejection ■ Tiny 32-Pin (5mm × 5mm) QFN Package The device converts 0V to 2.5V unipolar inputs differen- tially, or
U
±1.25V bipolar inputs also differentially,
APPLICATIO S
depending on the state of the BIP pin. Any analog input may swing rail-to-rail as long as the differential input ■ Multiphase Power Measurement range is maintained. ■ Multiphase Motor Control The conversion sequence can be abbreviated to convert ■ Data Acquisition Systems fewer than six channels, depending on the logic state of ■ Uninterruptable Power Supplies the SEL2, SEL1 and SEL0 inputs. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. The serial interface sends out the six conversion results in Protected by U.S. Patents including 6084440, 6522187. 96 clocks for compatibility with standard serial interfaces.
W BLOCK DIAGRA
CH4– CH4+ CH5– CH5+ CH2– CH2+ CH3– CH3+ CH0– CH0+ CH1– CH1+ 10µF 3V VCC VDD 21 20 19 18 17 16 15 14 12 11 10 9 8 7 6 5 4 24 25 13 + + + + + + 12-BIT LATCH 0 – – – – – – OV 3 DD 12-BIT LATCH 1 THREE- 3V S AND H S AND H S AND H S AND H S AND H S AND H STATE 600ksps 12-BIT LATCH 2 SERIAL 1 SD0 12-BIT ADC 12-BIT LATCH 3 OUTPUT 0.1µF 12-BIT LATCH 4 PORT 2 12-BIT LATCH 5 OGND MUX TIMING 30 CONV 2.5V LOGIC REFERENCE 32 SCK 31 DGND GND VREF 33 22 23 29 26 27 28 10µF BIP SEL2 SEL1 SEL0 235114 TA01 140812f 1
