AD7730 Analog Devices, AD7730 Datasheet - Page 49

• Manufacturer Part Number: AD7730
• Description: CMOS, 24-Bit Sigma-Delta, Bridge Transducer ADC for Load Cell Applications
• Manufacturer: Analog Devices

Specifications of AD7730

• Resolution (bits): 24bit
• # Chan: 2
• Sample Rate: n/a
• Interface: Ser
• Analog Input Type: Diff-Bip,Diff-Uni,SE-Uni
• Ain Range: Uni (Vref)/(PGA Gain)
• Adc Architecture: Sigma-Delta
• Pkg Type: DIP,SOIC,SOP

Output
Data Rate Frequency
75 Hz
100 Hz
150 Hz
300 Hz
600 Hz
Output
Data Rate Frequency
75 Hz
100 Hz
150 Hz
300 Hz
600 Hz
REV. A
–3 dB
2.9 Hz
3.9 Hz
5.85 Hz
11.7 Hz
23.4 Hz
–3 dB
2.9 Hz
3.9 Hz
5.85 Hz
11.7 Hz
23.4 Hz
Table XXIV. Peak-to-Peak Resolution vs. Input Range and Update Rate (CHP = 0)
SF
Word
2048
1536
1024
512
256
SF
Word
2048
1536
1024
512
256
Table XXIII. Output Noise vs. Input Range and Update Rate (CHP = 0)
332 ms
332 ms
250 ms
166 ms
83 ms
41.6 ms
Settling Time
Normal Mode
250 ms
166 ms
83 ms
41.6 ms
Settling Time
Normal Mode
Peak-to-Peak Resolution in Counts (Bits)
Typical Output RMS Noise in nV
53.2 ms
40 ms
26.6 ms
13.3 ms
6.63 ms
Settling Time
Fast Mode
53.2 ms
40 ms
26.6 ms
13.3 ms
6.6 ms
Settling Time
Fast Mode
–49–
Input Range
= 80 mV
320
325
410
590
910
Input Range
= 80 mV
85k (16.5)
82k (16.5)
65k (16)
45k (15.5)
30k (15)
= 40 mV
245
275
370
= 40 mV
62k (16)
55k (15.5)
48k (15.5)
36k (15)
23k (14.5)
Input Range
215
580
Input Range
42k (15.5)
19k (14)
Input Range
= 20 mV
135
160
180
265
350
Input Range
= 20 mV
49k (15.5)
36k (15)
25k (14.5)
AD7730/AD7730L
Input Range
= 10 mV
100
110
130
180
220
Input Range
= 10 mV
33k (15)
30k (15)
25k (14.5)
18k (14)
15k (14)