MAX1151 Datasheet, PDF(4/8 Page) Maxim Integrated Products

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

MAX1151 Datasheet, PDF (4/8 Pages) Maxim Integrated Products – 8-Bit, 750Msps Flash ADC

◁

8-Bit, 750Msps Flash ADC

______________________________________________________________Pin Description

1, 2, 3

4, 5, 19, 20, 22, 23, 27, 28, 38, 39,

40, 46, 47, 49, 60, 67, 79

7, 9, 11, 54, 56, 58,

69, 71, 73, 75, 77

13, 14, 31, 34, 41, 63, 64

15-18, 25, 26, 29, 30, 36,

37, 44, 45, 51, 52

32, 33

59, 61, 62, 65, 66, 68

NAME

D2B, D3B, D4B

VEE

D5B

DGND

D6B

D7B

D8B

N.C.

AGND

VRBF

VRBS

VIN

VRM

VRTF

VRTS

NCLK

CLK

DRA

NDRA

D0A

D1AâD6A

D7A

D8A

NDRB

DRB

D0B

D1B

FUNCTION

Data Output Bank, Bits 2, 3, and 4

Negative Supply, nominally -5.2V

Data Output Bank B, Bit 5

Digital Ground

Data Output Bank B, Bit 6

Data Output Bank B, Bit 7 (MSB)

Data Output Bank B, Bit 8 (OVR)

No Connection. Not internally connected.

Analog Ground

Reference-Voltage Force Bottom

Reference-Voltage Sense Bottom

Analog Input Voltage. Can be either voltage or sense.

Reference-Voltage Middle, nominally -1V

Reference-Voltage Force Top

Reference-Voltage Sense Top

Inverse Clock Input

Clock Input

Data Ready Bank A

Not Data Ready Bank A

Data Output Bank A, Bit 0 (LSB)

Data Output Bank A, Bits 1â6

Data Output Bank A, Bit 7 (MSB)

Data Output Bank A, Bit 8 (OVR)

Not Data Ready Bank B

Data Ready Bank B

Data Output Bank B, Bit 0 (LSB)

Data Output Bank B, Bit 1

_______________Detailed Description

The MAX1151 is one of the fastest monolithic, 8-bit, paral-

lel, flash analog-to-digital converters (ADCs) available

today. The nominal conversion rate is 750Msps, and the

analog bandwidth is in excess of 900MHz. A major

advance over previous flash converters is the inclusion of

255 input preamplifiers between the reference ladder and

input comparators (see Functional Diagram). This not

only reduces clock transient kickback to the input and

reference ladder but also reduces the effect of the input

signalâs dynamic state on the input comparatorsâ latching

characteristics. The preamplifiers act as buffers to stabi-

lize the input capacitance so that it remains constant over

different input voltage and frequency ranges, making the

part easier to drive than previous flash converters. The

preamplifiers also add a gain of +2 to the input signal, so

that each comparator has a wider overdrive or threshold

range to trip into or out of the active state. This gain

reduces metastable states that can cause errors at the

output.

4 _______________________________________________________________________________________

▷