MAX1190 Datasheet, PDF (11/21 Pages) Maxim Integrated Products – Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs

Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC
with Internal Reference and 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+
OUT
C2a
S4c
S1
INB-
S4b
C2b
OUT
MAX1190
C1b
S2b
INTERNAL
BIAS
S3b
S5b
COM
Figure 2. MAX1190 T/H Amplifiers
These values are then presented to the first-stage quan-
tizers and isolate the pipelines from the fast-changing
inputs. The wide input bandwidth T/H amplifiers allow the
MAX1190 to track and sample/hold analog inputs of high
frequencies (>Nyquist). Both ADC inputs (INA+, INB+,
INA- and INB-) can be driven either differentially or sin-
gle ended. Match the impedance of INA+ and INA-, as
well as INB+ and INB-, and set the common-mode volt-
age to midsupply (V_DD/2) for optimum performance.
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