MAX1184 Datasheet, PDF (9/21 Pages) Maxim Integrated Products – Dual 10-Bit, 20Msps, +3V, Low-Power ADC with Internal Reference and Parallel Outputs

Dual 10-Bit, 20Msps, +3V, Low-Power ADC with
Internal Reference and Parallel Outputs
Typical Operating Characteristics (continued)
(V_DD = +3V, OV_DD = +2.5V, V_REFIN = +2.048V, differential input at -0.5dB FS, f_CLK = 20MHz, C_L ≈ 10pF, T_A = +25°C, unless otherwise
noted.)
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
2.015
2.010
2.005
2.000
1.995
1.990
-40 -15 10
35
60
85
TEMPERATURE (°C)
OUTPUT NOISE HISTOGRAM (DC INPUT)
70,000
63,000
64,515
56,000
49,000
42,000
35,000
28,000
21,000
14,000
7,000
0
0 ⁸⁶⁹
152 0
N-2 N-1
N
N+1 N+2
DIGITAL OUTPUT CODE
PIN
1
2, 6, 11, 14, 15
3, 7, 10, 13, 16
4
5
8
9
12
17
18
19
20
NAME
COM
V_DD
GND
INA+
INA-
INB-
INB+
CLK
T/B
SLEEP
PD
OE
Pin Description
FUNCTION
Common-Mode Voltage Input/Output. Bypass to GND with a ≥0.1µF capacitor.
Analog Supply Voltage. Bypass to GND with a capacitor combination of 2.2µF in parallel with
0.1µF.
Analog Ground
Channel A Positive Analog Input. For single-ended operation, connect signal source to INA+.
Channel A Negative Analog Input. For single-ended operation, connect INA- to COM.
Channel B Negative Analog Input. For single-ended operation, connect INB- to COM.
Channel B Positive Analog Input. For single-ended operation, connect signal source to INB+.
Converter Clock Input
T/B selects the ADC digital output format.
High: Two’s complement.
Low: Straight offset binary.
Sleep Mode Input.
High: Deactivates the two ADCs, but leaves the reference bias circuit active.
Low: Normal operation.
Power-Down Input.
High: Power-down mode
Low: Normal operation
Output Enable Input.
High: Digital outputs disabled
Low: Digital outputs enabled
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