AD7730BRZ Analog Devices Inc, AD7730BRZ Datasheet - Page 11

• Manufacturer Part Number: AD7730BRZ
• Description: IC ADC BRIDGE TRANSDUCER 24-SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD7730BRZ

• Data Interface: DSP, Serial, SPI™
• Number Of Bits: 24
• Sampling Rate (per Second): 1.2k
• Number Of Converters: 1
• Power Dissipation (max): 125mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (0.300", 7.50mm Width)
• Resolution (bits): 24bit
• Sampling Rate: 1.2kSPS
• Input Channel Type: Differential, Single Ended
• Supply Voltage Range - Analog: 4.75V To 5.25V
• Package: 24SOIC W
• Resolution: 24 Bit
• Architecture: Delta-Sigma
• Number Of Adcs: 1
• Number Of Analog Inputs: 2
• Digital Interface Type: Serial (3-Wire, SPI)
• Input Type: Voltage
• Signal To Noise Ratio: 123 dB
• Polarity Of Input Voltage: Unipolar|Bipolar
• Number Of Elements: 1
• Sample Rate: 1.2KSPS
• Input Polarity: Unipolar/Bipolar
• Differential Input: Yes
• 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: 125mW
• Integral Nonlinearity Error: 18ppm of FSR
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 24
• Package Type: SOIC W
• Input Signal Type: Differential
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7730LEBZ - BOARD EVALUATION FOR AD7730EVAL-AD7730EBZ - BOARD EVAL FOR AD7730
• Lead Free Status / Rohs Status: Compliant

Output
Data Rate Frequency
150 Hz
200 Hz
300 Hz
600 Hz
1200 Hz
Output
Data Rate Frequency
150 Hz
200 Hz
300 Hz
600 Hz
1200 Hz
ON-CHIP REGISTERS
The AD7730 contains thirteen on-chip registers which can be accessed via the serial port of the part. These registers are summarized
in Figure 4 and in Table V and described in detail in the following sections.
REV. A
5.85 Hz
7.8 Hz
11.7 Hz
23.4 Hz
46.8 Hz
–3 dB
5.85 Hz
7.8 Hz
11.7 Hz
23.4 Hz
46.8 Hz
–3 dB
SF
Word
2048
1536
1024
512
256
SF
Word
2048
1536
1024
512
256
Table IV. Peak-to-Peak Resolution vs. Input Range and Update Rate (CHP = 0)
DIN
DOUT
Table III. Output Noise vs. Input Range and Update Rate (CHP = 0)
166 ms
125 ms
83.3 ms
41.6 ms
20.8 ms
Settling Time
Normal Mode
166 ms
125 ms
83.3 ms
41.6 ms
20.8 ms
Settling Time
Normal Mode
DOUT
DOUT
DOUT
DOUT
DOUT
DOUT
DOUT
DOUT
Peak-to-Peak Resolution in Counts (Bits)
DIN
DIN
DIN
DIN
DIN
DIN
Typical Output RMS Noise in nV
DIN
Figure 4. Register Overview
Settling Time
Fast Mode
26.6 ms
20 ms
13.3 ms
6.6 ms
3.3 ms
Settling Time
Fast Mode
26.6 ms
20 ms
13.3 ms
6.6 ms
3.3 ms
COMMUNICATIONS REGISTER
OFFSET REGISTER (x3)
GAIN REGISTER (x3)
STATUS REGISTER
FILTER REGISTER
MODE REGISTER
DATA REGISTER
DAC REGISTER
TEST REGISTER
–11–
RS2 RS1 RS0
Input Range
= 80 mV
160
190
235
300
435
Input Range
= 80 mV
165k (17.5)
140k (17)
115k (17)
90k (16.5)
60k (16)
120k (17)
100k (16.5)
90k (16.5)
60k (16)
Input Range
= 40 mV
110
130
145
225
315
Input Range
= 40 mV
43k (15.5)
REGISTER
DECODER
SELECT
Input Range
= 20 mV
80
95
100
135
210
Input Range
= 20 mV
80k (16.5)
70k (16)
65k (16)
50k (15.5)
32k (15)
AD7730/AD7730L
Input Range
= 10 mV
60
75
80
110
150
Input Range
= 10 mV
55k (16)
45k (15.5)
40k (15.5)
30k (15)
20k (14.5)