MAX1002CAX 查看數據表（PDF） - Maxim Integrated

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MAX1002CAX

Low-Power, 60Msps, Dual, 6-Bit ADC

Maxim Integrated 

Low-Power, 60Msps, Dual, 6-Bit ADC

Figures 4 and 5 show single-ended and differential DC-

coupled input circuits for applications where a DC com-

ponent of the input signal is present. The amplifiers’

input common-mode voltage range extends from 1.75V

to 2.75V. To prevent attenuation of the input signal’s DC

component when operating in this mode, disable the off-

set-correction amplifier by grounding the _OCC+ and

_OCC- pins for the I and Q blocks (Figures 4 and 5).

ADCs

The I and Q ADC blocks receive the analog signals

from the respective I and Q input amplifiers. The ADCs

use flash conversion with 63 fully differential compara-

tors to digitize the analog input signal into a 6-bit output

in offset binary format.

0.22µF

_OCC+

_OCC-

OFFSET

CORREC-

TION

0.1µF

_IN+

VSOURCE

_IN-

0.1µF

20k

INPUT

AMP

20k

MAX1002

2.35V INTERNAL REFERENCE

(ONE CHANNEL SHOWN)

Figure 2. Single-Ended AC-Coupled Input

0.22µF

_OCC+

_OCC-

OFFSET

CORREC-

TION

0.1µF _IN+

VSOURCE

_IN-

0.1µF

20k

INPUT

AMP

20k

MAX1002

2.35V INTERNAL REFERENCE

(ONE CHANNEL SHOWN)

Figure 3. Differential AC-Coupled Input

OFFSET-CORRECTION DISABLED

_IOCC+ _IOCC-

OFFSET

CORREC-

TION

OFFSET-CORRECTION DISABLED

_IOCC+ _IOCC-

OFFSET

CORREC-

TION

VSOURCE

VCM

1.75V TO 2.75V

_IIN+

_IIN-

20k

INPUT

AMP

20k

MAX1002

2.35V INTERNAL REFERENCE

(ONE CHANNEL SHOWN)

Figure 4. Single-Ended DC-Coupled Input

_IIN+

VSOURCE

_IIN-

20k

DIFFERENTIAL SOURCE

WITH 1.75V TO 2.75V

COMMON-MODE

RANGE

(ONE CHANNEL SHOWN)

INPUT

AMP

20k

MAX1002

2.35V INTERNAL REFERENCE

Figure 5. Differential DC-Coupled Input

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