Rainbow Electronics MAXQ7670 - Manual (Page 13)

MAXQ7670
Microcontroller with 10-Bit ADC,
PGA, 64KB Flash, and CAN Interface
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AVDD SUPPLY CURRENT
vs. ADC SAMPLING RATE
MAXQ7670 toc28
ADC SAMPLING RATE (ksps)
AVDD SUPPLY CURRENT (mA)
10 100
5.5
5.6
5.7
5.4
1 1000
PGA GAIN = 16V/V
DVDDIO DYNAMIC SUPPLY CURRENT
vs. DVDDIO SUPPLY VOLTAGE
MAXQ7670 toc29
DVDDIO SUPPLY VOLTAGE (V)
DVDDIO SUPPLY CURRENT (
µ
A)
2.625 2.500 2.375
120
140
160
180
200
220
240
260
100
2.250 2.750
NOTE 6 IN EC CHARACTERISTICS
DVDDIO DYNAMIC SUPPLY CURRENT
vs. TEMPERATURE
MAXQ7670 toc30
TEMPERATURE (°C)
DVDDIO SUPPLY CURRENT (
µ
A)
110 95 80 65 50 35 20 5 -10 -25
210
220
230
240
250
200
-40 125
NOTE 6 IN EC CHARACTERISTICS
DVDDIO STATIC SUPPLY CURRENT
vs. DVDDIO SUPPLY VOLTAGE
MAXQ7670 toc31
DVDDIO SUPPLY VOLTAGE (V)
DVDDIO SUPPLY CURRENT (
µ
A)
5.125 5.00 4.875
60
80
100
120
140
160
40
4.750 5.250
DVDDIO STATIC SUPPLY CURRENT
vs. TEMPERATURE
MAXQ7670 toc32
TEMPERATURE (°C)
DVDDIO SUPPLY CURRENT (
µ
A)
110 95 80 65 50 35 20 5 -10 -25
60
80
100
120
140
160
40
-40 125
Typical Operating Characteristics (continued)
(V
DVDDIO
= 5.0V, V
AVDD
= 3.3V, V
DVDD
= 2.5V, f
SYSCLK
= 16MHz, ADC resolution = 10 bits, V
REFDAC
= 3.3V, T
A
= +25°C, unless
otherwise noted.)
DVDDIO INCREMENTAL SUPPLY CURRENT
vs. DVDDIO SUPPLY VOLTAGE
MAXQ7670 toc33
DVDDIO SUPPLY VOLTAGE (V)
DVDDIO SUPPLY CURRENT (
µ
A)
5.125 5.000 4.875
1
2
3
4
5
0
4.750 5.250
BOI ENABLED
DVDDIO INCREMENTAL SUPPLY CURRENT
vs. TEMPERATURE
MAXQ7670 toc34
TEMPERATURE (°C)
DVDDIO SUPPLY CURRENT (
µ
A)
5 -10 -25 50 35 20 110 95 80 65
1
2
3
4
5
0
-40 125
BOI ENABLED
ADC SAMPLING ERROR
vs. INPUT SOURCE IMPEDANCE
SOURCE IMPEDANCE ( Ω)
SAMPLING ERROR (LSB)
MAXQ7670 toc35
-5
-4
-3
-2
-1
0
1
1 10 100 1000 10,000 100,000
PGA GAIN = 16V/V
f
S = 150.9ksps
SNR
FREQUENCY (kHz)
MAGNITUDE (dB)
MAXQ7670 toc36
0 5 10 15 20 25 30 35
-140
-120
-100
-80
-60
-40
-20
0
f IN = 10kHz
f S = 62.5ksps