Analog Devices ADSST-EM-3040, ADSST-SALEM-3T Digital Current Conditions Max mA, Comments

ADSST-SALEM-3T

Parameter	Min	Typ	Max	Unit	Test Conditions
FREQUENCY RESPONSE
(ADC)7 Typical Output Frequency
(Normalized to fS)
0		0		dB
0.03125		–0.1		dB
0.0625		–0.25		dB
0.125		–0.6		dB
0.1875		–1.4		dB
0.25		–2.8		dB
0.3125		–4.5		dB
0.375		–7.0		dB
0.4375		–9.5		dB
> 0.5		< –12.5		dB
LOGIC INPUTS
VINH, Input High Voltage	VDD – 0.8		VDD	V
VINL, Input Low Voltage	0		0.8	V
IIH, Input Current			10	∝A
CIN, Input Capacitance			10	pF
LOGIC OUTPUT
VOH, Output High Voltage	VDD – 0.4		VDD	V	IOUT ≤ 100 ∝A
VOL, Output Low Voltage	0		0.4	V	IOUT ≤ 100 ∝A
Three-State Leakage Current	–10		+10	∝A
POWER SUPPLIES
AVDD1, AVDD2	2.7		3.6	V
DVDD	2.7		3.6	V
IDD8					See Table 7

1Operating temperature range is as follows: –40°C to +85°C. Therefore, TMIN = –40°C and TMAX = +85°C.

2Test conditions: Input PGA set for 0 dB gain (unless otherwise noted).

3At input to sigma-delta modulator of ADC.

4Guaranteed by design.

5Overall group delay will be affected by the sample rate and the external digital filtering.

6The ADC’s input impedance is inversely proportional to DMCLK and is approximated by: (4 × 1011)/DMCLK.

7Frequency response of the ADC measured with input at audio reference level (the input level that produces an output level of 0 dBm0), with 38 dB preamplifier bypassed and input gain of 0 dB.

8Test Conditions: no load on digital inputs, analog inputs ac-coupled to ground.

Table 7. Current Summary (AVDD = DVDD = 3.3 V)

	Digital Current,
Conditions	Max (mA)	SE	MCLK ON	Comments
ADCs Only On	25	1	Yes	REFOUT Disabled
REFCAP Only On	1.0	0	No	REFOUT Disabled
REFCAP and REFOUT Only On	3.5	0	No
All Sections On	26.5	1	Yes	REFOUT Enabled
All Sections Off	1.0	1	Yes	MCLK Active Levels Equal to 0 V and DVDD
All Sections Off	0.05	0	No	Digital Inputs Static and Equal to 0 V or DVDD

The above values are in mA and are typical values, unless otherwise noted. MCLK = 16.384 MHz; SCLK = 16.384 MHz.

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