MAX1460 Просмотр технического описания (PDF) - Maxim Integrated

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MAX1460

Low-Power, 16-Bit Smart ADC

Maxim Integrated 

MAX1460

Low-Power, 16-Bit Smart ADC

Electrical Characteristics (continued)

(VDD = +5V, VSS = 0, fXIN = 2MHz, TA = TMIN to TMAX, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

OUTPUT DAC (Note 7)

DAC Resolution

12

bits

Integral Nonlinearity

INL

1

LSB

Differential Nonlinearity

DNL

0.5

LSB

UNCOMMITTED OP AMP

Op Amp Supply Current

100

µA

Input Common-Mode Range

Open-Loop Gain

Offset Voltage (as unity-gain

follower)

CMR

AV

VOS

VIN = 2.5V (no load)

VSS + 1.3

VDD - 1.0 V

60

dB

-30

+30

mV

Output Voltage Swing

No load

Output Current Range

VOUT = (VSS + 0.2V) to (VDD - 0.2V)

DIGITAL INPUTS: START, CS1, CS2, SDIO (Note 8), RESET, XIN (Note 9), TEST

VSS + 0.05 VDD - 0.05 V

±500

µA

Input High Voltage

Input Low Voltage

Input Hysteresis

Input Leakage

Input Capacitance

DIGITAL OUTPUTS: D[11...0]

VIH

VIL

VHYST

IIN

CIN

VIN = 0 or VDD

(Note 10)

4.0

V

1.0

V

1.0

V

±10

µA

50.0

pF

Output Voltage Low

VOL ISINK = 500μA

Output Voltage High

VOH ISOURCE = 500μA

Three-State Leakage Current

IL

CS = 0

Three-State Output Capacitance

COUT CS = 0 (Note 10)

DIGITAL OUTPUTS: SDIO (Note 8), SDO, EOC, OUT

0.5

V

4.5

V

±10

µA

50.0

pF

Output Voltage Low

VOL ISINK = 500μA

0.3

V

Output Voltage High

VOH ISOURCE = 500μA

4.7

V

Three-State Leakage Current

IL

CS = 0

±10

µA

Three-State Output Capacitance

COUT CS = 0 (Note 10)

50.0

pF

Note 1: EEPROM programming requires a minimum VDD = 4.75V. IDD may exceed its limits during this time.

Note 2: This value does not include the sensor or load current. This value does include the uncommitted op amp current. Note that

the MAX1460 will convert continuously if REPEAT MODE is set in the EEPROM.

Note 3: See the Analog Front-End, including PGA, Coarse Offset DAC, ADC, and Temperature Sensor sections.

Note 4: The signal input to the ADC is the output of the PGA plus the output of the CO-DAC. The reference to the ADC is VDD.

The plus full-scale input to the ADC is +VDD and the minus full-scale input to the ADC is -VDD. This specification shows the

contribution of the CO-DAC to the ADC input.

Note 5: See Figure 2 for ADC outputs between +0.8500 to -0.8500.

Note 6: The sensor and the MAX1460 must always be at the same temperature during calibration and use.

Note 7: The Output DAC is specified using the external lowpass filter (Figure 8).

Note 8: SDIO is an input/output digital pin. It is only enabled as a digital output pin when the MAX1460 receives from the test system

the commands 8 hex or A hex (Table 4).

Note 9: XIN is a digital input pin only when the TEST pin is high.

Note 10: Guaranteed by design. Not subject to production testing.

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