ADUC7060 Analog Devices, ADUC7060 Datasheet - Page 48

• Manufacturer Part Number: ADUC7060
• Description: Low-Power, Precision Analog Microcontroller, Dual ?-? ADCs, Flash/EE, ARM7TDMI
• Manufacturer: Analog Devices

Specifications of ADUC7060

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 10
• Sram (bytes): 4096Bytes
• Gpio Pins: 14
• Adc # Channels: 10
• Other: 14 Bit DAC,PWM

ADuC7060/ADuC7061
Bit
7
6:0
1
2
Table 46. ADC Conversion Rates and Settling Times
Chop
Enabled
No
No
No
No
Yes
1
Table 47. Allowable Combinations of SF and AF
SF
0 to 31
32 to 63
64 to 127
Due to limitations on the digital filter internal data path, there are some limitations on the combinations of the sinc3 decimation factor (SF) and averaging factor (AF)
that can be used to generate a required ADC output rate. This restriction limits the minimum ADC update in normal power mode to 4 Hz or 1 Hz in lower power mode.
In low power mode, the ADC is driven directly by the low power oscillator (131 kHz) and not 512 kHz. All f
An additional time of approximately 60 μs per ADC is required before the first ADC is available.
Name
NOTCH2
SF[6:0]
Averaging
Factor
No
No
Yes
Yes
N/A
Description
Sinc3 modify. Set by user to modify the standard sinc3 frequency response to increase the filter stop-band rejection by
approximately 5 dB. This is achieved by inserting a second notch (NOTCH2) at
where f
Sinc3 decimation factor (SF)
sinc3 filter. The output rate from the sinc3 filter is given by
when the chop bit (Bit 15, chop enable) = 0 and the averaging factor (AF) = 0. This is valid for all SF values ≤ 125.
For SF = 126, f
For SF = 127, f
For information on calculating the f
f
f
NOTCH2
ADC
NOTCH
= (512,000/([SF + 1] × 64)) Hz
Running
Average
No
Yes
No
Yes
N/A
= 1.333 × f
is the location of the first notch in the response.
0
Yes
Yes
Yes
ADC
ADC
is forced to 60 Hz.
is forced to 50 Hz.
NOTCH
f
[
[
[
[
[
ADC
SF
SF
SF
SF
SF
512
512
Normal Mode
+
+
+
+
+
1
] 1
] 1
] 1
] 1
] 1
,
,
.The value (SF) written in these bits controls the oversampling (decimation factor) of the
000
000
512
512
×
×
×
×
×
512
64
64
64
64
64
1 to 7
Yes
Yes
No
,
,
000
000
×
×
×
,
000
ADC
3 [
3 [
3 [
2
+
for SF (other than 126 and 127) and AF values, refer to Table 46.
+
+
AF
AF
AF
Rev. C | Page 48 of 108
]
]
]
+
3
8 to 63
Yes
No
No
f
[
[
[
[
[
ADC
SF
SF
SF
SF
SF
131
131
Low Power Mode
+
+
+
+
+
] 1
] 1
] 1
,
,
] 1
] 1
072
072
131
131
×
×
×
×
×
131
64
64
64
,
64
64
,
072
072
AF Range
×
×
×
,
072
3 [
3 [
3 [
+
+
+
AF
AF
AF
ADC
]
]
]
+
calculations should be divided by 4 (approximately).
3
t
SETTLING
f
f
f
f
f
ADC
ADC
ADC
ADC
ADC
1
2
2
3
4
1