Datasheet
AD7699 Data Sheet
Rev. | Page 4 of 28
Parameter Conditions/Comments Min Typ Max Unit
INTERNAL REFERENCE
REF Output Voltage @ 25°C 4.086 4.096 4.106 V
REFIN Output Voltage
6
@ 25°C 2.3 V
REF Output Current ±300 µA
Temperature Drift ±10 ppm/°C
Line Regulation VDD = 5 V ± 5% ±15 ppm/V
Long-Term Drift 1000 hours 50 ppm
Turn-On Settling Time CREF = 10 µF 5 ms
EXTERNAL REFERENCE
Voltage Range REF input 0.5 VDD + 0.3 V
REFIN input (buffered) 0.5 VDD − 0.2 V
Current Drain 500 kSPS, REF = 5 V 100 µA
TEMPERATURE SENSOR
Output Voltage
7
@ 25°C 283 mV
Temperature Sensitivity 1 mV/°C
DIGITAL INPUTS
Logic Levels
V
IL
−0.3 +0.3 × VIO V
V
IH
0.7 × VIO VIO + 0.3 V
I
IL
−1 +1 µA
I
IH
−1 +1 µA
DIGITAL OUTPUTS
Data Format
8
Pipeline Delay
9
V
OL
I
SINK
= +500 µA 0.4 V
V
OH
I
SOURCE
= −500 µA VIO − 0.3 V
POWER SUPPLIES
VDD Specified performance 4.5 5.5 V
VIO Specified performance 1.8 VDD + 0.3 V
Standby Current
10,
11
VDD and VIO = 5 V, @ 25°C 50 nA
Power Dissipation VDD = 5 V, 100 kSPS throughput 5.2 µW
VDD = 5 V, 500 kSPS throughput 26 29 mW
VDD = 5 V, 500 kSPS throughput with internal reference 28 32 mW
Energy per Conversion 52 nJ
TEMPERATURE RANGE
12
Specified Performance T
MIN
to T
MAX
−40 +85 °C
1
See the section. Analog Inputs
2
The bandwidth is set with the configuration register.
3
LSB means least significant bit. With the 5 V input range, one LSB = 76.3 µV.
4
See the Terminology section. These specifications include full temperature range variation but not the error contribution from the reference.
5
All specifications expressed in decibels are referred to a full-scale input FSR and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
6
This is the output from the internal band gap.
7
The output voltage is internal and present on a dedicated multiplexer input.
8
Unipolar mode: serial 16-bit straight binary.
Bipolar mode: serial 16-bit twos complement.
9
Conversion results available immediately after completed conversion.
10
With all digital inputs forced to VIO or GND as required.
11
During acquisition phase.
12
Contact an Analog Devices, Inc., sales representative for the extended temperature range.
B