AD7911ARMZ Analog Devices Inc, AD7911ARMZ Datasheet - Page 13

IC ADC 10BIT DUAL 2CH 8-MSOP

AD7911ARMZ

Manufacturer Part Number
AD7911ARMZ
Description
IC ADC 10BIT DUAL 2CH 8-MSOP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD7911ARMZ

Data Interface
DSP, MICROWIRE™, QSPI™, Serial, SPI™
Operating Temperature
-40°C ~ 85°C
Number Of Bits
10
Sampling Rate (per Second)
250k
Number Of Converters
1
Power Dissipation (max)
20mW
Voltage Supply Source
Single Supply
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Resolution (bits)
10bit
Input Channel Type
Single Ended
Supply Voltage Range - Analogue
2.35V To 5.25V
Supply Current
4mA
No. Of Pins
8
Sampling Rate
250kSPS
Rohs Compliant
Yes
Number Of Elements
1
Resolution
10Bit
Architecture
SAR
Sample Rate
250KSPS
Input Polarity
Unipolar
Input Type
Voltage
Rated Input Volt
5.25V
Differential Input
No
Power Supply Requirement
Single
Single Supply Voltage (typ)
3/5V
Single Supply Voltage (min)
2.35V
Single Supply Voltage (max)
5.25V
Dual Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Power Dissipation
20mW
Differential Linearity Error
±0.5LSB
Integral Nonlinearity Error
±0.5LSB
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
8
Package Type
MSOP
Input Signal Type
Single-Ended
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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TYPICAL PERFORMANCE CHARACTERISTICS
Figure 10 and Figure 11 show typical FFT plots for the AD7921
and AD7911, respectively, at a 250 kSPS sample rate and
100 kHz input frequency.
Figure 12 shows the SINAD ratio performance versus the input
frequency for various supply voltages while sampling at
250 kSPS with a SCLK frequency of 5 MHz for the AD7921.
Figure 13 shows the SNR ratio performance versus the input
frequency for various supply voltages while sampling at
250 kSPS with an SCLK frequency of 5 MHz for the AD7921.
–115
–115
–15
–35
–55
–75
–95
–15
–35
–55
–75
–95
5
5
Figure 10. AD7921 Dynamic Performance at 250 kSPS
Figure 11. AD7911 Dynamic Performance at 250 kSPS
0
0
8192 POINT FFT
V
F
F
SNR = 73.13dB
SINAD = 72.73dB
THD = –83.30dB
SFDR = –86.15dB
8192 POINT FFT
8192 POINT FFT
V
V
F
F
F
F
SNR = 61.75dB
SNR = 73.13dB
SINAD = 61.74dB
SINAD = 72.73dB
THD = –86.24dB
THD = –83.30dB
SFDR = –84.46dB
SFDR = –86.15dB
SAMP
IN
SAMP
SAMP
IN
IN
DD
DD
DD
= 100kHz
= 100kHz
= 100kHz
= 2.7V
= 2.7V
= 2.7V
= 250kSPS
= 250kSPS
20
= 250kSPS
20
40
40
FREQUENCY (kHz)
FREQUENCY (kHz)
60
60
80
80
100
100
120
120
Rev. 0 | Page 13 of 28
Figure 14 and Figure 15 show INL and DNL performance for
the AD7921.
Figure 16 shows a graph of the total harmonic distortion versus
the analog input frequency for different source impedances
when using a supply voltage of 3.6 V and a sampling rate of
250 kSPS. See the Analog Input section.
Figure 17 shows a graph of the total harmonic distortion versus
the analog input frequency for various supply voltages while
sampling at 250 kSPS with an SCLK frequency of 5 MHz.
Figure 18 shows the shutdown current versus the voltage supply
for different operating temperatures.
–70.5
–71.0
–71.5
–72.0
–72.5
–73.0
–73.5
–74.0
–72.0
–72.2
–72.4
–72.6
–72.8
–73.0
–73.2
–73.4
–73.6
Figure 12. AD7921 SINAD vs. Input Frequency at 250 kSPS
Figure 13. AD7921 SNR vs. Input Frequency at 250 kSPS
10
10
V
DD
V
= 5.25V
DD
V
DD
= 2.7V
V
V
DD
DD
= 4.75V
= 2.35V
V
= 2.7V
DD
= 4.75V
FREQUENCY (kHz)
FREQUENCY (kHz)
V
DD
100
100
= 3.6V
V
V
DD
V
DD
DD
= 2.35V
AD7911/AD7921
= 3.6V
= 5.25V
1k
1k

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