MAX1036 Maxim, MAX1036 Datasheet - Page 20

• Manufacturer Part Number: MAX1036
• Description: 2.7V to 5.5V / Low-Power / 4-/12-Channel 2-Wire Serial 8-Bit ADCs
• Manufacturer: Maxim

2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs
Figure 12. Unipolar Transfer Function
Figure 14. Power-Supply and Grounding Connections
20
R* = 5Ω
______________________________________________________________________________________
1...100
1...111
1...110
1...101
0...011
0...010
0...001
0...000
*OPTIONAL
OUTPUT CODE
3V/5V
REF
V
DD
0
1
0.1µF
2
3
MAX1036
MAX1037
MAX1038
MAX1039
GND
INPUT VOLTAGE (LSB)
SUPPLIES
V
LOGIC
252
1LSB =
= 3V/5V
253
3V/5V
CIRCUITRY
254
DIGITAL
V
256
REF
255
DGND
GND
256
Differential nonlinearity (DNL) is the difference between
an actual step width and the ideal value of 1LSB. A
DNL error specification of less than 1LSB guarantees
no missing codes and a monotonic transfer function.
Aperture jitter (t
the time between the samples.
Aperture delay (t
edge of the sampling clock and the instant when an
actual sample is taken.
For a waveform perfectly reconstructed from digital sam-
ples, signal-to-noise ratio (SNR) is the ratio of full-scale
analog input (RMS value) to the RMS quantization error
(residual error). The ideal, theoretical minimum analog-
to-digital noise is caused by quantization error only and
results directly from the ADC’s resolution (N bits):
Figure 13. Bipolar Transfer Function
0...100
0...001
0...000
1...111
0...111
0...110
0...101
1...011
1...010
1...001
1...000
(TWO'S COMPLEMENT)
REF
OUTPUT CODE
-128
-127
-126 -125
SNR = (6.02
AJ
) is the sample-to-sample variation in
AD
INPUT VOLTAGE (LSB)
) is the time between the rising
Differential Nonlinearity
-1
'-' INPUT
0
✕
Signal-to-Noise Ratio
N + 1.76)dB
+1
Aperture Delay
Aperture Jitter
+124
1LSB =
+125
+126
V
256
REF
+127
+128