MAX1197ECM+TD Maxim Integrated Products, MAX1197ECM+TD Datasheet - Page 12

• Manufacturer Part Number: MAX1197ECM+TD
• Description: IC ADC 8BIT 60MSPS DL 48-TQFP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1197ECM+TD

• Number Of Bits: 8
• Sampling Rate (per Second): 60M
• Data Interface: Parallel
• Number Of Converters: 2
• Power Dissipation (max): 150mW
• 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

Figure 2. MAX1197 T/H Amplifiers
are closed. The fully differential circuits sample the
input signals onto the two capacitors (C2a and C2b)
through switches S4a and S4b. S2a and S2b set the
common mode for the amplifier input, and open simul-
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
Dual, 8-Bit, 60Msps, 3V, Low-Power ADC with
Internal Reference and Parallel Outputs
12
______________________________________________________________________________________
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
COM
COM
COM
COM
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
pipelines from the fast-changing inputs. The wide input
bandwidth T/H amplifiers allow the MAX1197 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.
S5a
S5b
S5a
S5b
S3a
S3b
S3a
S3b
OUT
OUT
OUT
OUT
HOLD
TRACK
HOLD
MAX1197
TRACK
CLK
INTERNAL
NONOVERLAPPING
CLOCK SIGNALS