MAX1156 Datasheet, PDF (6/15 Pages) Maxim Integrated Products – 14-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input Range

14-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
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)
100
90
80
70
60
50
40
30
20
10
0
1
SINAD vs. FREQUENCY
f_SAMPLE = 131ksps
10
100
FREQUENCY (kHz)
120
100
80
60
40
20
0
1
SFDR vs. FREQUENCY
f_SAMPLE = 131ksps
10
100
FREQUENCY (kHz)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
1
THD vs. FREQUENCY
f_SAMPLE = 131ksps
10
100
FREQUENCY (kHz)
Pin Description
PIN
NAME
FUNCTION
1
D4/D12 Three-State Digital Data Output
2
D5/D13 Three-State Digital Data Output. D13 is the MSB.
3
D6/0
Three-State Digital Data Output
4
D7/0
Three-State Digital Data Output
Read/Convert Input. Power up and put the MAX1156/MAX1158/MAX1174 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
5
R/C
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.
6
EOC
End of Conversion. EOC drives low when conversion is complete.
7
AV_DD Analog Supply Input. Bypass with a 0.1µF capacitor to AGND.
8
AGND Analog Ground. Primary analog ground (star ground).
9
AIN
Analog Input
10
AGND Analog Ground. Connect pin 10 to pin 8.
11
REFADJ ^{Reference Buffer Output. Bypass REFADJ with a 0.1µF capacitor to AGND for internal reference}
mode. Connect REFADJ to AV_DD to select external reference mode.
12
REF
Reference Input/Output. Bypass REF with a 10µF capacitor to AGND for internal reference mode.
External reference input when in external reference mode.
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