MAX1195ECM+TD Maxim Integrated Products, MAX1195ECM+TD Datasheet - Page 12

• Manufacturer Part Number: MAX1195ECM+TD
• Description: IC ADC 8BIT 40MSPS DL 48-TQFP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1195ECM+TD

• Number Of Bits: 8
• Sampling Rate (per Second): 40M
• Data Interface: Parallel
• Number Of Converters: 2
• Power Dissipation (max): 108mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

taneously with S1 sampling the input waveform.
Switches S4a, S4b, S5a, and S5b are then opened
before switches S3a and S3b connects capacitors C1a
and C1b to the output of the amplifier and switch S4c is
closed. The resulting differential voltages are held on
capacitors C2a and C2b. The amplifiers are used to
charge capacitors C1a and C1b to the same values
originally held on C2a and C2b. These values are then
presented to the first-stage quantizers and isolate the
Dual, 8-Bit, 40Msps, 3V, Low-Power ADC with
Internal Reference and Parallel Outputs
12
Figure 2. MAX1195 T/H Amplifiers
______________________________________________________________________________________
INA+
INA-
INB+
INB-
S4a
S4b
S4a
S4b
S4c
S4c
C2a
C2b
C2a
C2b
INTERNAL
S2a
INTERNAL
INTERNAL
S2a
INTERNAL
BIAS
BIAS
BIAS
BIAS
S1
S1
S2b
S2b
C1a
C1b
C1a
C1b
pipelines from the fast-changing inputs. The wide input
bandwidth T/H amplifiers allow the MAX1195 to track
and sample/hold analog inputs of high frequencies
(>Nyquist). Both ADC inputs (INA+, INB+ and INA-,
INB-) can be driven either differentially or single-ended.
Match the impedance of INA+ and INA-, as well as
INB+ and INB-, and set the common-mode voltage to
mid-supply (V
COM
COM
COM
COM
S5a
S5b
S5a
S5b
S3a
S3b
S3a
S3b
OUT
OUT
OUT
OUT
HOLD
DD
TRACK
/2) for optimum performance.
HOLD
MAX1195
TRACK
CLK
INTERNAL
NONOVERLAPPING
CLOCK SIGNALS