MAX1179/MAX1187/MAX1189
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
6 _______________________________________________________________________________________
SINAD vs. FREQUENCY
MAX1179/87/89 toc10
FREQUENCY (kHz)
SINAD (dB)
10
10
20
30
40
50
60
70
80
90
100
0
1 100
f
SAMPLE
= 131ksps
SPURIOUS-FREE DYNAMIC RANGE
vs. FREQUENCY
MAX1179/87/89 toc11
FREQUENCY (kHz)
SFDR (dB)
10
20
40
60
80
100
120
0
1 100
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX1179/87/89 toc12
FREQUENCY (kHz)
THD (dB)
10
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-110
1 100
PIN NAME FUNCTION
1 D8 Three-State Digital Data Output
2 D9 Three-State Digital Data Output
3 D10 Three-State Digital Data Output
4 D11 Three-State Digital Data Output
5 D12 Three-State Digital Data Output
6 D13 Three-State Digital Data Output
7 D14 Three-State Digital Data Output
8 D15 Three-State Digital Data Output (MSB)
9R/C
Read/Convert Input. Power up and place the MAX1179/MAX1187/MAX1189 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 EOC End of Conversion. EOC drives low when conversion is complete.
11 AV
DD
Analog Supply Input. Bypass with a 0.1µF capacitor to AGND.
12 AGND Analog Ground. Primary analog ground (star ground).
13 AIN Analog Input
14 AGND Analog Ground. Connect pin 14 to pin 12.
Typical Operating Characteristics (continued)
(AV
DD
= DV
DD
= +5V, external reference = +4.096V, C
REF
= 10µF, C
REFADJ
= 0.1µF, V
REFADJ
= AV
DD
, C
LOAD
= 20pF, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Typical Application Circuit)
