AD7980 ADC Datasheet

AD7980 Datasheet, PDF, Equivalent


Part Number

AD7980

Description

1 MSPS PulSAR ADC

Manufacture

Analog Devices

Total Page 27 Pages
Datasheet
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AD7980
Data Sheet
16-Bit, 1 MSPS, PulSAR ADC in MSOP/LFCSP
AD7980
FEATURES
16-bit resolution with no missing codes
Throughput: 1 MSPS
Low power dissipation
4 mW at 1 MSPS (VDD only)
7 mW at 1 MSPS (total)
70 μW at 10 kSPS
INL: ±0.6 LSB typical, ±1.25 LSB maximum
SINAD: 91.25 dB at 10 kHz
THD: −110 dB at 10 kHz
Pseudo differential analog input range
0 V to VREF with VREF between 2.5 V to 5 V
No pipeline delay
Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V
logic interface
Proprietary serial interface
SPI/QSPI/MICROWIRE™/DSP compatible
Daisy-chain multiple ADCs and busy indicator
10-lead MSOP and 10-lead, 3 mm × 3 mm LFCSP,
same space as SOT-23
Wide operating temperature range: −40°C to +125°C
APPLICATIONS
Battery-powered equipment
Communications
Automatic test equipment (ATE)
Data acquisitions
Medical instruments
Table 1. MSOP, LFCSP 14-/16-/18-Bit PulSAR® ADCs
Type
100 kSPS
250 kSPS
18-Bit
AD7989-11
AD76911
16-Bit
14-Bit
AD7680
AD7683
AD7684
AD7988-11
AD7940
1 Pin-for-pin compatible.
AD76851
AD76871
AD7694
AD79421
TYPICAL APPLICATION CIRCUIT
2.5V TO 5V 2.5V
0 TO VREF
REF VDD VIO
IN+
SDI
AD7980 SCK
IN– SDO
GND
CNV
1.8V TO 5.0V
3- OR 4-WIRE INTERFACE
(SPI, DAISY CHAIN, CS)
Figure 1.
GENERAL DESCRIPTION
The AD79801 is a 16-bit, successive approximation, analog-to-
digital converter (ADC) that operates from a single power supply,
VDD. It contains a low power, high speed, 16-bit sampling ADC
and a versatile serial interface port. On the CNV rising edge, it
samples an analog input, IN+, between 0 V to REF with respect
to a ground sense, IN−. The reference voltage, REF, is applied
externally and can be set independent of the supply voltage,
VDD. Its power scales linearly with throughput.
The SPI-compatible serial interface also features the ability,
using the SDI input, to daisy-chain several ADCs on a single,
3-wire bus and provides an optional busy indicator. It is compatible
with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO.
The AD7980 is housed in a 10-lead MSOP or a 10-lead LFCSP
with operation specified from −40°C to +125°C.
1 Protected by U.S. Patent 6,703,961.
400 kSPS to 500 kSPS
AD76901
AD7989-51
AD76861
AD76881
AD76931
AD7988-51
AD79461
≥1000 kSPS
AD79821
AD79841
AD79801
AD79831
Rev. E
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AD7980
AD7980* Product Page Quick Links
Last Content Update: 11/01/2016
Comparable Parts
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Evaluation Kits
• AD7980 Evaluation kit
• Precision ADC PMOD Compatible Boards
Documentation
Application Notes
• AN-742: Frequency Domain Response of Switched-
Capacitor ADCs
• AN-931: Understanding PulSAR ADC Support Circuitry
• AN-932: Power Supply Sequencing
Data Sheet
• AD7980-DSCC: Military Data Sheet
• AD7980-EP: Enhanced Product Data Sheet
• AD7980: 16-Bit, 1 MSPS, PulSAR ADC in MSOP/LFCSP
Data Sheet
Product Highlight
• [NO TITLE FOUND] Product Highlight
• Lowest-Power 16-Bit ADC Optimizes Portable Designs
(eeProductCenter, 10/4/2006)
User Guides
• UG-340: Evaluation Board for the 10-Lead Family 14-/16-/
18-Bit PulSAR ADCs
• UG-682: 6-Lead SOT-23 ADC Driver for the 8-/10-Lead
Family of 14-/16-/18-Bit PulSAR ADC Evaluation Boards
Software and Systems Requirements
• AD7980 - No-OS Driver for Microchip Microcontroller
Platforms
• AD7980 - No-OS Driver for Renesas Microcontroller
Platforms
• AD7980 FMC-SDP Interposer & Evaluation Board / Xilinx
KC705 Reference Design
• BeMicro FPGA Project for AD7980 with Nios driver
Tools and Simulations
• AD7980 IBIS Models
Reference Materials
Press
• Analog Devices To Host ‘Name That Beer’ Demonstration
Using Spectrometer Technology from Wasatch Photonics at
electronica 2012
• Most Power Efficient Drivers For 12-, 14- And 16-bit A/D
Converters Unveiled
Product Selection Guide
• SAR ADC & Driver Quick-Match Guide
Technical Articles
• Explaining SAR ADC Power Specifications
• Exploring Different SAR ADC Analog Input Architectures
• Introduction to Dynamic Power Scaling
• MS-1779: Nine Often Overlooked ADC Specifications
• MS-2210: Designing Power Supplies for High Speed ADC
• Powering A Precision SAR ADC Using A High Efficiency,
Ultralow Power Switcher in Power Sensitive Applications
Tutorials
• MT-001: Taking the Mystery out of the Infamous Formula,
"SNR=6.02N + 1.76dB", and Why You Should Care
• MT-002: What the Nyquist Criterion Means to Your
Sampled Data System Design
• MT-031: Grounding Data Converters and Solving the
Mystery of "AGND" and "DGND"
Design Resources
• AD7980 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
Discussions
View all AD7980 EngineerZone Discussions
Sample and Buy
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Technical Support
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Features Data Sheet 16-Bit, 1 MSPS, PulSAR ADC i n MSOP/LFCSP AD7980 FEATURES 16-bit re solution with no missing codes Throughp ut: 1 MSPS Low power dissipation 4 mW a t 1 MSPS (VDD only) 7 mW at 1 MSPS (tot al) 70 μW at 10 kSPS INL: ±0.6 LSB ty pical, ±1.25 LSB maximum SINAD: 91.25 dB at 10 kHz THD: −110 dB at 10 kHz P seudo differential analog input range 0 V to VREF with VREF between 2.5 V to 5 V No pipeline delay Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V lo gic interface Proprietary serial interf ace SPI/QSPI/MICROWIRE™/DSP compatibl e Daisy-chain multiple ADCs and busy in dicator 10-lead MSOP and 10-lead, 3 mm × 3 mm LFCSP, same space as SOT-23 Wid e operating temperature range: −40°C to +125°C APPLICATIONS Battery-powere d equipment Communications Automatic te st equipment (ATE) Data acquisitions Me dical instruments Table 1. MSOP, LFCSP 14-/16-/18-Bit PulSAR® ADCs Type 10 0 kSPS 250 kSPS 18-Bit AD7989-11 AD 76911 16-Bit 14-Bit AD7680 AD7683 AD7684 AD7988-11 AD7940 1 .
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