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AD7980SRMZ-EP

P1-P3P4-P6P7-P9P10-P12
16-Bit, 1 MSPS PulSAR ADC in MSOP
Enhanced Product
AD7980-EP
Rev. A Document Feedback
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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
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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Tel: 781.329.4700 ©2010–2015 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
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, ±1.5 LSB maximum
SINAD: 91 dB @ 10 kHz
THD: −114 dB @ 10 kHz
Pseudo differential analog input range
0 V to V
REF
with V
REF
between 2.5 V to 5.5 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
Supports defense and aerospace applications (AQEC)
Controlled manufacturing baseline
One assembly/test site
One fabrication site
Enhanced product change notification
Qualification data available on request
10-lead MSOP
Military temperature range: −55°C to +125°C
APPLICATIONS
Battery-powered equipment
Communications
ATE
Data acquisitions
Medical instruments
APPLICATION DIAGRAM EXAMPLE
AD7980-EP
REF
GND
VDD
IN+
IN–
VIO
SDI
SCK
SDO
CNV
1.8V TO 5.0V
3- OR 4-WIRE INTERFACE
(SPI, DAISY CHAIN, CS)
2.5
V
TO 5V 2.5
V
0TO VREF
09304-001
Figure 1.
GENERAL DESCRIPTION
The AD7980-EP
1
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−. e 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-EP is housed in a 10-lead MSOP with operation
specified from −55°C to +125°C.
1
Protected by U.S. Patent 6,703,961.
Table 1. MSOP, LFCSP 14-/16-/18-Bit PulSAR® ADC
Type 100 kSPS 250 kSPS 400 kSPS to 500 kSPS ≥1000 kSPS
18-Bit AD7989-1
1
AD7691
1
AD7690
1
AD7982
1
AD7989-5
1
AD7984
1
16-Bit AD7680 AD7685
1
AD7686
1
AD7980
1
AD7683 AD7687
1
AD7688
1
AD7983
1
AD7684 AD7694 AD7693
1
AD7988-1
1
AD7988-5
1
14-Bit AD7940 AD7942
1
AD7946
1
1
Pin-for-pin compatible.
AD7980-EP Enhanced Product
Rev. A | Page 2 of 12
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Application Diagram Example........................................................ 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Specifications ....................................................................... 5
Absolute Maximum Ratings ............................................................6
ESD Caution...................................................................................6
Pin Configurations and Function Descriptions ............................7
Typical Performance Characteristics ..............................................8
Outline Dimensions ....................................................................... 12
Ordering Guide .......................................................................... 12
REVISION HISTORY
7/15—Rev. 0 to Rev. A
Changes to Product Title, Features Section, and Table 1 ............ 1
Added Patent Note, Note 1 .............................................................. 1
Changes to Table 2 ............................................................................ 3
Changes to Table 3 ............................................................................ 4
Changes to Table 6 ............................................................................ 7
Changes to Figure 11, Figure 12, Figure 14, Figure 15 ................ 9
Changes to Figure 17, Figure 20, Figure 21 ................................. 10
Changes to Ordering Guide .......................................................... 12
9/10—Revision 0: Initial Version
Enhanced Product AD7980-EP
Rev. A | Page 3 of 12
SPECIFICATIONS
VDD = 2.5 V, VIO = 2.3 V to 5.5 V, V
REF
= 5 V, T
A
= –55°C to +125°C, unless otherwise noted.
Table 2.
Parameter Conditions Min Typ Max Unit
RESOLUTION 16 Bits
ANALOG INPUT
Voltage Range IN+ − IN− 0 V
REF
V
Absolute Input Voltage
IN+
−0.1
V
REF
+ 0.1
V
IN− −0.1 +0.1 V
Analog Input CMRR f
IN
= 100 kHz 60 dB
Leakage Current @ 25°C Acquisition phase 1 nA
ACCURACY
No Missing Codes 16 Bits
Differential Linearity Error REF = 5 V −0.9 ±0.4 +0.9 LSB
1
REF = 2.5 V ±0.55 LSB
1
Integral Linearity Error REF = 5 V −1.5 ±0.6 +1.5 LSB
1
REF = 2.5 V
±0.65
LSB
1
Transition Noise REF = 5 V 0.6 LSB
1
REF = 2.5 V 1.0 LSB
1
Gain Error, T
MIN
to T
MAX
2
±2 LSB
1
Gain Error Temperature Drift ±0.35 ppm/°C
Zero Error, T
MIN
to T
MAX
2
−0.62
±0.08
+0.62
mV
Zero Temperature Drift 0.54 ppm/°C
Power Supply Sensitivity
VDD = 2.5 V ± 5%
±0.1 LSB
1
THROUGHPUT
Conversion Rate
VIO ≥ 2.3 V up to 85°C, VIO ≥
3.3 V above 85°C up to 125°C
0 1 MSPS
Transient Response Full-scale step 290 ns
AC ACCURACY
Dynamic Range V
REF
= 5 V 92 dB
3
V
REF
= 2.5 V 87 dB
3
Oversampled Dynamic Range f
O
= 10 kSPS 111 dB
3
Signal-to-Noise Ratio, SNR
f
IN
= 10 kHz, V
REF
= 5 V
91.5
dB
3
f
IN
= 10 kHz, V
REF
= 2.5 V 87 dB
3
Spurious-Free Dynamic Range, SFDR f
IN
= 10 kHz −110 dB
3
Total Harmonic Distortion, THD f
IN
= 10 kHz −114 dB
3
Signal-to-(Noise + Distortion), SINAD f
IN
= 10 kHz, V
REF
= 5 V 91 dB
3
f
IN
= 10 kHz, V
REF
= 2.5 V 86.5 dB
3
1
LSB means least significant bit. With the 5 V input range, 1 LSB is 76.3 µV.
2
These specifications include full temperature range variation, but not the error contribution from the external reference.
3
All specifications in dB are referred to a full-scale input FSR. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
P1-P3P4-P6P7-P9P10-P12

AD7980SRMZ-EP

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Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 16-BIT 1MSPS LOWER POWER ADC IC
Lifecycle:
New from this manufacturer.
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