AD7734BRUZ Analog Devices Inc, AD7734BRUZ Datasheet - Page 11

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AD7734BRUZ

Manufacturer Part Number
AD7734BRUZ
Description
IC ADC 24BIT 4-CH 28-TSSOP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD7734BRUZ

Data Interface
DSP, MICROWIRE™, QSPI™, Serial, SPI™
Number Of Bits
24
Sampling Rate (per Second)
15.4k
Number Of Converters
1
Power Dissipation (max)
100mW
Voltage Supply Source
Analog and Digital
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
28-TSSOP (0.173", 4.40mm Width)
Resolution (bits)
24bit
Sampling Rate
15.4kSPS
Input Channel Type
Single Ended
Supply Voltage Range - Analog
4.75V To 5.25V
Supply Current
13.5µA
Number Of Elements
1
Resolution
24Bit
Architecture
Delta-Sigma
Sample Rate
3.05MSPS
Input Polarity
Unipolar/Bipolar
Input Type
Voltage
Rated Input Volt
5/10/±5/±10V
Differential Input
No
Power Supply Requirement
Analog and Digital
Single Supply Voltage (typ)
5V
Single Supply Voltage (min)
4.75V
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
100mW
Integral Nonlinearity Error
±0.0045%FSR
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
28
Package Type
TSSOP
Input Signal Type
Single-Ended
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
EVAL-AD7734EBZ - BOARD EVALUATION FOR AD7734
Lead Free Status / Rohs Status
Compliant

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Chopping Disabled
The second mode, in which the AD7734 is configured with
chopping disabled (CHOP = 0), provides faster conversion time
while still maintaining high resolution. Table 7 to Table 9 show
the –3 dB frequencies and typical performance versus the
channel conversion time and equivalent output data rate,
respectively. Table 7 shows the typical output rms noise. Table 8
shows the typical effective resolution based on the rms noise.
Table 9 shows the typical output peak-to-peak resolution,
Table 7. Typical Output RMS Noise in µV vs. Conversion Time and Input Range with Chopping Disabled
FW
Table 8. Typical Effective Resolution in Bits vs. Conversion Time and Input Range with Chopping Disabled
FW
Table 9. Typical Peak-to-Peak Resolution in Bits vs. Conversion Time and Input Range with Chopping Disabled
FW
127
127
127
92
44
35
16
92
44
35
16
92
44
35
16
8
3
8
3
8
3
Conversion Time
Conversion Time
Conversion Time
Register
Register
Register
5Ch
2Ch
5Ch
2Ch
23h
10h
08h
03h
7Fh
23h
10h
08h
03h
7Fh
5Ch
2Ch
23h
10h
08h
03h
7Fh
Conversion Time
Conversion Time
Conversion Time
1357
(µs)
(µs)
1357
(µs)
1357
992
492
398
200
117
992
492
398
200
117
992
492
398
200
117
65
65
65
Output Data Rate
Output Data Rate
Output Data Rate
15398
15398
15398
(Hz)
1008
2032
2511
4991
8545
(Hz)
(Hz)
1008
2032
2511
4991
8545
1008
2032
2511
4991
8545
737
737
737
Rev. 0 | Page 11 of 32
–3 dB Frequency
–3 dB Frequency
–3 dB Frequency
representing values for which there will be no code flicker
within a 6-sigma limit. The peak-to-peak resolutions are not
calculated based on rms noise but on peak-to-peak noise.
These typical numbers are generated from 4096 data samples
acquired in continuous conversion mode with an analog input
voltage set to 0 V and MCLK = 6.144 MHz. The conversion
time is selected via the channel conversion time register.
14000
14000
14000
1850
2290
2500
7780
1850
2290
2500
7780
(Hz)
(Hz)
1850
2290
2500
7780
(Hz)
670
920
670
920
670
920
Input Range/Peak-to-Peak Resolution (Bits)
±10 V
±10 V
20.5
20.3
19.7
19.5
19.0
18.4
17.2
17.6
17.4
16.8
16.6
16.1
15.5
14.3
Input Range/Effective Resolution (Bits)
0 V to +10 V
0 V to +10 V
19.5
19.3
18.7
18.5
18.0
17.4
16.2
16.6
16.4
15.8
15.6
15.1
14.5
13.3
RMS Noise
(µV)
13.2
15.5
22.7
26.3
39.0
57.0
132
±5 V
19.5
19.3
18.7
16.6
16.4
15.8
15.6
15.1
14.5
13.3
±5 V
18.5
18.0
17.4
16.2
AD7734
0 V to +5 V
0 V to +5 V
18.5
18.3
17.7
17.5
17.0
16.4
15.2
15.6
15.4
14.8
14.6
14.1
13.5
12.3

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