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MAX19700

7.5Msps, Ultra-Low-Power Analog Front-End

Maxim Integrated 

7.5Msps, Ultra-Low-Power

Analog Front-End

ELECTRICAL CHARACTERISTICS (continued)

(VDD = 3V, OVDD = 1.8V, internal reference (1.024V), CL ≈ 10pF on all digital outputs, fCLK = 7.5MHz (50% duty cycle), ADC input

amplitude = -0.5dBFS, DAC output amplitude = 0dBFS, differential ADC input, differential DAC output, CREFP = CREFN = CCOM =

0.33µF. Typical values are at TA = +25°C, unless otherwise noted. CL < 5pF on all aux-DAC outputs.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Ext1-Rx, Ext4-Rx, and SPI3-Rx modes;

receive ADC operating mode (Rx),

fCLK = 7.5MHz, fIN = 1.87MHz on both

channels; aux-DACs ON and at midscale

12.8

16

VDD Supply Current

Ext2-Rx, Ext3-Rx, and SPI1-Rx modes;

receive ADC operating mode (Rx),

fCLK = 7.5MHz, fIN = 1.87MHz on both

channels; aux-DACs ON and at midscale

Standby mode, CLK = 0 or OVDD;

aux-DACs ON and at midscale

Idle mode, fCLK = 7.5MHz; aux-DACs ON

and at midscale

Shutdown mode, CLK = 0 or OVDD

Ext1-Rx, Ext2-Rx, Ext3-Rx, Ext4-Rx,

SPI1-Rx, SPI3-Rx modes; receive ADC

operating mode (Rx), fCLK = 7.5MHz,

fIN = 1.87MHz on both channels;

aux-DACs ON and at midscale

7

mA

2.7

4

4.7

6

0.7

µA

1.38

mA

OVDD Supply Current

Rx ADC DC ACCURACY

Resolution

Integral Nonlinearity

Differential Nonlinearity

Offset Error

Gain Error

DC Gain Matching

Offset Matching

Gain Temperature Coefficient

Power-Supply Rejection

Ext1-Tx, Ext2-Tx, Ext3-Tx, Ext4-Tx,

SPI2-Tx, SPI4-Tx modes; transmit DAC

operating mode (Tx), fCLK = 7.5MHz, fOUT

72.9

= 620kHz; aux-DACs ON and at midscale

Idle mode, fCLK = 7.5MHz; aux-DACs ON

10.9

µA

and at midscale

Shutdown mode, CLK = 0 or OVDD

0.01

Standby mode, CLK = 0 or OVDD;

aux-DACs ON and at midscale

0.03

INL

DNL

Residual DC offset error

Include reference error

PSRR

Offset error (VDD ±5%)

Gain error (VDD ±5%)

10

Bits

±0.85

LSB

±0.55

LSB

±0.5

±5

%FS

±1.1

±5

%FS

±0.01 ±0.25 dB

±4.5

LSB

±15.7

ppm/°C

±0.2

LSB

±0.04

%FS

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