AD7709 Analog Devices, AD7709 Datasheet - Page 5

• Manufacturer Part Number: AD7709
• Description: 16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
• Manufacturer: Analog Devices

Specifications of AD7709

• Resolution (bits): 16bit
• # Chan: 4
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: (2Vref/PGA Gain) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

Parameter
LOGIC OUTPUTS (Excluding XTAL2)
I/O PORT
START-UP TIME
POWER REQUIREMENTS
NOTES
1
2
3
4
5
Specifications subject to change without notice.
REV. A
Temperature Range –40∞C to +85∞C.
Guaranteed by design and/or characterization data on production release.
Full-scale error applies to both positive and negative full scale.
Simultaneous 50 Hz and 60 Hz rejection is achieved using 19.79 Hz update rate. Normal mode rejection in this case is 60 dB min.
When the part is placed in power-down mode for a single conversion/second, at an update rate of 19.79 Hz, the current consumption is higher compared to when the
part is placed in standby mode as the crystal oscillator takes approximately 100 ms to begin clocking. The device will, therefore, use full current for the conversion
time and the 100 ms period required for the oscillator to begin clocking. However, if the conversion rate is lower, the current consumption will be reduced so that it
is worthwhile to use the power-down rather than the standby mode.
V
V
V
V
Floating-State Leakage Current
Floating-State Output Capacitance
Data Output Coding
V
V
Input Currents
Input Capacitance
V
V
V
V
Floating-State Output Leakage Current
Floating-State Output Capacitance
From Power-On
From Standby Mode
From Power-Down Mode
Power Supply Voltage
Power Supply Currents
OH
OL
OH
OL
INL
INH
OH
OL
OH
OL
V
I
I
I
DD
DD
DD
, Output Low Voltage
, Output Low Voltage
, Output Low Voltage
, Output Low Voltage
, Output High Voltage
, Output High Voltage
, Output High Voltage
, Output High Voltage
DD
, Input Low Voltage
, Input High Voltage
Current
(Low Power Mode)
for One Conversion Second
– GND
2
2
2
2
2
2
2
2
2
2
V
0.4
4
0.4
± 10
± 10
Binary
Offset Binary
AD7709A,
DD
0.8
0.4
2.0
± 2
–70
10
V
0.4
4
0.4
± 10
± 10
300
1
300
4.75/5.25
1.75
7
7
1.5
1.5
26
26
6.5
6.5
107
134
2.7/3.6
1.5
DD
– 0.6
5
5
– 0.6
AD7709
B
–5–
Unit
V min
V max
V min
V max
mA max
pF typ
V max
V max
V min
mA max
mA max
pF typ
V min
V max
V min
V max
mA max
pF typ
ms typ
ms typ
ms typ
V min/max
V min/max
mA max
mA max
mA max
mA typ
mA max
mA typ
mA max
mA typ
mA max
mA typ
mA typ
mA typ
Test Conditions
V
V
V
V
Unipolar Mode
Bipolar Mode
V
V
V
V
V
and –20 mA at V
the Logic Inputs
All Digital Inputs
V
V
V
V
OSCPD = 0
OSCPD = 1
V
V
V
V
B Grade, V
A Grade, V
B Grade, V
A Grade, V
B Grade, V
A Grade, V
B Grade, V
A Grade, V
V
V
DD
DD
DD
DD
DD
DD
DD
IN
IN
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
= GND, Typically –40 mA @ V
= V
= 3 V, I
= 3 V, I
= 5 V, I
= 5 V, I
= 5 V
= 3 V
= 3 V or 5 V
= 3 V, I
= 3 V, I
= 5 V, I
= 5 V, I
= 3 V nom
= 5 V nom
= 3 V, 1.25 mA typ
= 5 V, 1.45 mA typ
= 3 V, Standby Mode
= 5 V, Standby Mode
DD
DD
DD
DD
DD
DD
DD
DD
DD
SOURCE
SINK
SOURCE
SINK
SOURCE
SINK
SOURCE
SINK
= 3 V, Standby Mode
= 3 V, Power-Down Mode
= 5 V, Standby Mode
= 5 V, Power-Down Mode
= 3 V, Standby Mode
= 3 V, Power-Down Mode
= 5 V, Standby Mode
= 5 V, Power-Down Mode
DD
= 100 mA
= 1.6 mA
= 100 mA
= 1.6 mA
= 3 V; Weak Pull-Ups on
= 100 mA
= 200 mA
= 100 mA
= 200 mA
AD7709
DD
= 5 V