AD7715ANZ-3 Analog Devices Inc, AD7715ANZ-3 Datasheet - Page 13

• Manufacturer Part Number: AD7715ANZ-3
• Description: IC ADC 16BIT SIGMA-DELTA 16DIP
• Manufacturer: Analog Devices Inc

Specifications of AD7715ANZ-3

• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Bits: 16
• Sampling Rate (per Second): 500
• Number Of Converters: 1
• Power Dissipation (max): 9.5mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Resolution (bits): 16bit
• Input Channel Type: Differential
• Supply Voltage Range - Analogue: 3V To 3.6V
• Supply Voltage Range - Digital: 3V To 5.25V
• Supply Current: 600µA
• No. Of: RoHS Compliant
• Sampling Rate: 19.2kSPS
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7715-3EBZ - BOARD EVALUATION FOR AD7715
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REV. C
AD7715-3
Table IX shows the AD7715-3 output rms noise for the selectable notch and –3 dB frequencies for the part, as selected by FS1 and
FS0 of the Setup Register. The numbers given are for the bipolar input ranges with a V
and are generated at an analog input voltage of 0 V with the part used in unbuffered mode (BUF bit of the Setup Register = 0).
Table X meanwhile shows the output peak-to-peak noise for the selectable notch and –3 dB frequencies for the part. It is important to
note that these numbers represent the resolution for which there will be no code flicker. They are not calculated based on rms noise but on peak-
to-peak noise. The numbers given are for the bipolar input ranges with a V
0. These numbers are typical, are generated at an analog input voltage of 0 V and are rounded to the nearest LSB.
Meanwhile, Table XI and Table XII show rms noise and peak-to-peak resolution respectively with the AD7715-3 operating under
the same conditions as above except that now the part is operating in buffered mode (BUF Bit of the Setup Register = 1).
Filter First Notch & O/P Data Rate
MCLK IN =
2.4576 MHz
50 Hz
60 Hz
250 Hz
500 Hz
Filter First Notch & O/P Data Rate
MCLK IN =
2.4576 MHz
50 Hz
60 Hz
250 Hz
500 Hz
Filter First Notch & O/P Data Rate
MCLK IN =
2.4576 MHz
50 Hz
60 Hz
250 Hz
500 Hz
Filter First Notch & O/P Data Rate
MCLK IN =
2.4576 MHz
50 Hz
60 Hz
250 Hz
500 Hz
Table X. Peak-to-Peak Resolution vs. Gain and Output Update Rate for AD7715-3 (Unbuffered Mode)
Table XII. Peak-to-Peak Resolution vs. Gain and Output Update Rate for AD7715-3 (Buffered Mode)
Table IX. Output RMS Noise vs. Gain and Output Update Rate for AD7715-3 (Unbuffered Mode)
Table XI. Output RMS Noise vs. Gain and Output Update Rate for AD7715-3 (Buffered Mode)
MCLK IN =
1 MHz
20 Hz
25 Hz
100 Hz
200 Hz
MCLK IN =
1 MHz
20 Hz
25 Hz
100 Hz
200 Hz
MCLK IN =
1 MHz
20 Hz
25 Hz
100 Hz
200 Hz
MCLK IN =
1 MHz
20 Hz
25 Hz
100 Hz
200 Hz
MCLK IN =
2.4576 MHz
13.1 Hz
15.72 Hz
65.5 Hz
131 Hz
MCLK IN =
2.4576 MHz
13.1 Hz
15.72 Hz
65.5 Hz
131 Hz
MCLK IN =
2.4576 MHz
13.1 Hz
15.72 Hz
65.5 Hz
131 Hz
MCLK IN =
2.4576 MHz
13.1 Hz
15.72 Hz
65.5 Hz
131 Hz
–3 dB Frequency
–3 dB Frequency
–3 dB Frequency
–3 dB Frequency
MCLK IN =
1 MHz
5.24 Hz
6.55 Hz
26.2 Hz
52.4 Hz
MCLK IN =
1 MHz
5.24 Hz
6.55 Hz
26.2 Hz
52.4 Hz
MCLK IN =
1 MHz
5.24 Hz
6.55 Hz
26.2 Hz
52.4 Hz
MCLK IN =
1 MHz
5.24 Hz
6.55 Hz
26.2 Hz
52.4 Hz
–13–
REF
3.0
3.4
45
270
16
16
13
11
4.5
5.1
50
270
16
16
13
10
GAIN = 1
GAIN = 1
GAIN = 1
GAIN = 1
of +1.25 V and for the BUF bit of the Setup Register =
Typical Peak-to-Peak Resolution in Bits
Typical Peak-to-Peak Resolution in Bits
Typical Output RMS Noise in V
Typical Output RMS Noise in V
REF
1.7
2.1
20
135
16
16
13
11
2.4
2.9
25
135
16
16
13
11
GAIN = 2
GAIN = 2
GAIN = 2
GAIN = 2
of +1.25 V. These numbers are typical
GAIN = 32
0.7
0.7
2.2
9.7
GAIN = 32
14
14
13
10
GAIN = 32
0.9
0.9
2.6
9.7
GAIN = 32
14
14
12
10
AD7715
GAIN = 128
0.65
0.7
1.6
3.3
GAIN = 128
12
12
11
10
GAIN = 128
0.9
1.0
2
3.3
GAIN = 128
12
12
11
10