AD7980-EP Datasheet, PDF (1/12 Pages) Analog Devices – 16-Bit, 1 MSPS PulSAR ADC in MSOP QFN

16-Bit, 1 MSPS PulSAR ADC in MSOP/QFN
AD7980-EP
FEATURES
16-bit resolution with no missing codes
Throughput: 1 MSPS
Low power dissipation: 7.0 mW @ 1 MSPS, 70 µW @ 10 kSPS
INL: ±1.5 LSB typical, ±1.25 LSB maximum
SINAD: 91.5 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
Any input range and easy to drive with the ADA4841
No pipeline delay
Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V
logic interface
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
2.5V TO 5V 2.5V
0 TO VREF
REF VDD ^VIO
IN+
SDI
AD7980-EP ^SCK
IN–
SDO
GND
CNV
1.8V TO 5.0V
3- OR 4-WIRE INTERFACE
(SPI, DAISY CHAIN, CS)
Figure 1.
GENERAL DESCRIPTION
The AD7980-EP 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-EP is housed in a 10-lead MSOP with operation
specified from −55°C to +125°C.
Table 1. MSOP, QFN (LFCSP) 14-/16-/18-Bit PulSAR® ADC
Type
100 kSPS
250 kSPS
400 kSPS to 500 kSPS
18-Bit
AD7691¹
AD7690¹
16-Bit
14-Bit
AD7680
AD7683
AD7684
AD7940
1 _{Pin-for-pin compatible.}
AD7685¹
AD7687¹
AD7694
AD7942¹
AD7686¹
AD7688¹
AD7693¹
AD7946¹
1000 kSPS
AD7982¹
AD7980¹
ADC Driver
ADA4941
ADA4841
ADA4941
ADA4841
Rev. 0
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