Datasheet AD7915, AD7916 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | 16-Bit, 1 MSPS/500 kSPS PulSAR ADCs in MSOP/LFCSP |
| Seiten / Seite | 26 / 1 — 16-Bit, 1 MSPS/500 kSPS. Differential PulSAR ADCs. Data Sheet. AD7915/. … |
| Dateiformat / Größe | PDF / 567 Kb |
| Dokumentensprache | Englisch |
16-Bit, 1 MSPS/500 kSPS. Differential PulSAR ADCs. Data Sheet. AD7915/. AD7916. FEATURES. GENERAL DESCRIPTION. Low power dissipation
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16-Bit, 1 MSPS/500 kSPS Differential PulSAR ADCs Data Sheet AD7915/ AD7916 FEATURES GENERAL DESCRIPTION Low power dissipation
The AD7915/AD7916 are 16-bit, successive approximation,
AD7915
analog-to-digital converters (ADCs) that operate from a single
4 mW at 1 MSPS (VDD only)
power supply, VDD. They contain a low power, high speed,
7 mW at 1 MSPS (total)
16-bit sampling ADC and a versatile serial interface port. On
AD7916
the CNV rising edge, the AD7915/AD7916 sample the voltage
2 mW at 500 kSPS (VDD only)
difference between the IN+ and IN− pins. The voltages on these
3.7 mW at 500 kSPS (total)
pins typically swing in opposite phases between 0 V and VREF.
16-bit resolution with no missing codes
The reference voltage, REF, is applied externally and can be set
Throughput: 1 MSPS (AD7915)/500 kSPS (AD7916)
independent of the supply voltage, VDD. The power consumption
INL: ±0.4 LSB typical, ±1 LSB maximum
of the AD7915/AD7916 scales linearly with throughput.
SNR: 94 dB at 1 kHz, VREF = 5 V
The AD7915/AD7916 are serial peripheral interface (SPI)
SINAD: 93.5 dB at 1 kHz, VREF = 5 V
compatible, which features the ability, using the SDI input, to
THD: −118.5 dB at 1 kHz
daisy-chain several ADCs on a single 3-wire bus. They are
Dynamic range: 95.5 dB, VREF = 5 V
compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic using the
True differential analog input range: ±VREF
separate VIO supply.
0 V to VREF with VREF between 2.4 V and 5.1 V No pipeline delay
The AD7915/AD7916 are available in a 10-lead MSOP or a
Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic
10-lead LFCSP with operation specified from −40°C to +125°C.
interface Table 1. MSOP, LFCSP 14-/16-/18-Bit PulSAR® ADCs Proprietary serial interface: SPI-/QSPI-/MICROWIRE™-/DSP- Bits 100 kSPS 250 kSPS 400 kSPS to 500 kSPS ≥1000 kSPS compatible1
181 AD7989-12 AD76912 AD76902 AD79822
Ability to daisy-chain multiple ADCs
AD7989-52 AD79842
10-lead packages: MSOP and 3 mm × 3 mm LFCSP
161 AD7684 AD76872 AD76882 AD79152 AD76932
APPLICATIONS
AD79162
Battery-powered equipment
163 AD7680 AD76852 AD76862 AD79802
Data acquisition systems
AD7683 AD7694 AD7988-52 AD79832
Medical instruments
AD7988-12
Seismic data acquisition systems
143 AD7940 AD79422 AD79462 1 True differential. 2 Pin-for-pin compatible. 3 Pseudo differential.
TYPICAL APPLICATIONS CIRCUIT 2.5V TO 5V 2.5V REF VDD VIO 1.8V TO 5.5V IN+ SDI/CS 3- OR 4-WIRE AD7915/ SCK INTERFACE ±10V, ±5V, .. AD7916 SDO (SPI, CS, IN– GND CNV DAISY CHAIN)
1
ADA4940-1
-00 3 58 12 Figure 1. 1 Protected by U.S. Patent 6,703,961.
Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2015 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATIONS CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE SINGLE TO DIFFERENTIAL DRIVER VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE MODE, 3-WIRE, WITHOUT BUSY INDICATOR MODE 3-WIRE, WITH BUSY INDICATOR MODE, 4-WIRE, WITHOUT BUSY INDICATOR MODE 4-WIRE WITH BUSY INDICATOR CHAIN MODE, WITHOUT BUSY INDICATOR CHAIN MODE WITH BUSY INDICATOR APPLICATIONS INFORMATION INTERFACING TO BLACKFIN DSP LAYOUT EVALUATING AD7915/AD7916 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE NOTES
The AD7915/AD7916 are 16-bit, successive approximation,
AD7915
analog-to-digital converters (ADCs) that operate from a single
4 mW at 1 MSPS (VDD only)
power supply, VDD. They contain a low power, high speed,
7 mW at 1 MSPS (total)
16-bit sampling ADC and a versatile serial interface port. On
AD7916
the CNV rising edge, the AD7915/AD7916 sample the voltage
2 mW at 500 kSPS (VDD only)
difference between the IN+ and IN− pins. The voltages on these
3.7 mW at 500 kSPS (total)
pins typically swing in opposite phases between 0 V and VREF.
16-bit resolution with no missing codes
The reference voltage, REF, is applied externally and can be set
Throughput: 1 MSPS (AD7915)/500 kSPS (AD7916)
independent of the supply voltage, VDD. The power consumption
INL: ±0.4 LSB typical, ±1 LSB maximum
of the AD7915/AD7916 scales linearly with throughput.
SNR: 94 dB at 1 kHz, VREF = 5 V
The AD7915/AD7916 are serial peripheral interface (SPI)
SINAD: 93.5 dB at 1 kHz, VREF = 5 V
compatible, which features the ability, using the SDI input, to
THD: −118.5 dB at 1 kHz
daisy-chain several ADCs on a single 3-wire bus. They are
Dynamic range: 95.5 dB, VREF = 5 V
compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic using the
True differential analog input range: ±VREF
separate VIO supply.
0 V to VREF with VREF between 2.4 V and 5.1 V No pipeline delay
The AD7915/AD7916 are available in a 10-lead MSOP or a
Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic
10-lead LFCSP with operation specified from −40°C to +125°C.
interface Table 1. MSOP, LFCSP 14-/16-/18-Bit PulSAR® ADCs Proprietary serial interface: SPI-/QSPI-/MICROWIRE™-/DSP- Bits 100 kSPS 250 kSPS 400 kSPS to 500 kSPS ≥1000 kSPS compatible1
181 AD7989-12 AD76912 AD76902 AD79822
Ability to daisy-chain multiple ADCs
AD7989-52 AD79842
10-lead packages: MSOP and 3 mm × 3 mm LFCSP
161 AD7684 AD76872 AD76882 AD79152 AD76932
APPLICATIONS
AD79162
Battery-powered equipment
163 AD7680 AD76852 AD76862 AD79802
Data acquisition systems
AD7683 AD7694 AD7988-52 AD79832
Medical instruments
AD7988-12
Seismic data acquisition systems
143 AD7940 AD79422 AD79462 1 True differential. 2 Pin-for-pin compatible. 3 Pseudo differential.
TYPICAL APPLICATIONS CIRCUIT 2.5V TO 5V 2.5V REF VDD VIO 1.8V TO 5.5V IN+ SDI/CS 3- OR 4-WIRE AD7915/ SCK INTERFACE ±10V, ±5V, .. AD7916 SDO (SPI, CS, IN– GND CNV DAISY CHAIN)
1
ADA4940-1
-00 3 58 12 Figure 1. 1 Protected by U.S. Patent 6,703,961.
Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2015 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATIONS CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE SINGLE TO DIFFERENTIAL DRIVER VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE MODE, 3-WIRE, WITHOUT BUSY INDICATOR MODE 3-WIRE, WITH BUSY INDICATOR MODE, 4-WIRE, WITHOUT BUSY INDICATOR MODE 4-WIRE WITH BUSY INDICATOR CHAIN MODE, WITHOUT BUSY INDICATOR CHAIN MODE WITH BUSY INDICATOR APPLICATIONS INFORMATION INTERFACING TO BLACKFIN DSP LAYOUT EVALUATING AD7915/AD7916 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE NOTES