Datasheet
MAX1065/MAX1066
Low-Power, 14-Bit Analog-to-Digital Converters
with Parallel Interface
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(AV
DD
= DV
DD
= 5V, external reference = 4.096V, C
REF
= 1µF, C
REFADJ
= 0.1µF, T
A
= +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX1065/MAX1066 toc10
FREQUENCY (kHz)
THD (dB)
101
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-110
0.1 100
SAMPLE RATE = 165ksps
SPURIOUS-FREE DYNAMIC RANGE
vs. FREQUENCY
MAX1065/MAX1066 toc11
FREQUENCY (kHz)
SFDR (dB)
101.0
10
20
30
40
50
60
70
80
90
100
110
0
0.1 100
SAMPLE RATE = 165ksps
FFT AT 1kHz
MAX1065/MAX1066 toc12
FREQUENCY (kHz)
MAGNITUDE (dB)
604020
-120
-100
-80
-60
-40
-20
0
-140
080
SAMPLE RATE = 165ksps
Pin Description
PIN NAME
MAX1065
MAX1066 MAX1065 MAX1066
FUNCTION
11D6
D4/D12
Three-State Digital Data Output
22D7
D5/D13
Three-State Digital Data Output. D13 is the MSB.
3 3 D8 D6/0 Three-State Digital Data Output
4 4 D9 D7/0 Three-State Digital Data Output
5 — D10 — Three-State Digital Data Output
6 — D11 — Three-State Digital Data Output
7 — D12 — Three-State Digital Data Output
8 — D13 — Three-State Digital Data Output (MSB)
95 R/C
Read/Convert Input. Power up and put the MAX1065/MAX1066 in acquisition
mode by holding R/C low during the first falling edge of CS. During the
second falling edge of CS the level on R/C determines whether the reference
and reference buffer power down or remain on after conversion. Set R/C high
during the second falling edge of CS to power down the reference and buffer,
or set R/C low to leave the reference and buffer powered up. Set R/C high
during the third falling edge of CS to put valid data on the bus.
10 6 EOC End Of Conversion. EOC drives low when conversion is complete.
11 7 AV
DD
Analog Supply Input. Bypass with a 0.1µF capacitor to AGND.
12 8 AGND Analog Ground. Primary analog ground (star ground).
13 9 AIN Analog Input
14 10 AGND
Analog Ground. Connect Pin 14 to Pin 12 (MAX1065). Connect Pin 10 to Pin 8
(MAX1066).