MAX1196 Datasheet, PDF (13/23 Pages) Maxim Integrated Products – Dual 8-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs

Dual 8-Bit, 40Msps, 3V, Low-Power ADC with
Internal Reference and Multiplexed Parallel Outputs
INTERNAL
BIAS
S2a
S4a
INA+
C2a
S4c
S1
COM
S5a
C1a
S3a
OUT
INA-
S4b
C2b
OUT
C1b
S2b
INTERNAL
BIAS
INTERNAL
BIAS
S2a
S3b
S5b
COM
COM
S5a
C1a
S3a
HOLD
HOLD
CLK
TRACK
TRACK
INTERNAL
NONOVERLAPPING
CLOCK SIGNALS
S4a
INB+
C2a
S4c
S1
INB-
S4b
C2b
C1b
OUT
MAX1196
OUT
S2b
INTERNAL
BIAS
S3b
S5b
COM
Figure 2. MAX1196 T/H Amplifiers
The MAX1196 provides three modes of reference
operation:
• Internal reference mode
• Buffered external reference mode
• Unbuffered external reference mode
In internal reference mode, connect the internal refer-
ence output REFOUT to REFIN through a resistor (e.g.,
10kΩ) or resistor-divider, if an application requires a
reduced full-scale range. For stability and noise-filtering
purposes, bypass REFIN with a ≥0.1µF capacitor to
GND. In internal reference mode, REFOUT, COM,
REFP, and REFN become low-impedance outputs.
In buffered external reference mode, adjust the refer-
ence voltage levels externally by applying a stable and
accurate voltage at REFIN. In this mode, COM, REFP,
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