Datasheet

AD7612 Data Sheet
Rev. A | Page 4 of 32
Parameter Conditions/Comments Min Typ Max Unit
REFERENCE BUFFER PDREF = high
REFBUFIN Input Voltage Range 2.4 2.5 2.6 V
EXTERNAL REFERENCE PDREF = PDBUF = high
Voltage Range REF 4.75 5 AVDD + 0.1 V
Current Drain 750 kSPS throughput 250 µA
TEMPERATURE PIN
Voltage Output @ 25°C 311 mV
Temperature Sensitivity 1 mV/°C
Output Resistance 4.33 kΩ
DIGITAL INPUTS
Logic Levels
V
IL
−0.3 +0.6 V
V
IH
2.1 OVDD + 0.3 V
I
IL
−1 +1 µA
I
IH
−1 +1 µA
DIGITAL OUTPUTS
Data Format Parallel or serial 16-bit
Pipeline Delay
6
V
OL
I
SINK
= 500 µA 0.4 V
V
OH
I
SOURCE
= –500 µA OVDD − 0.6 V
POWER SUPPLIES
Specified Performance
AVDD 4.75
7
5 5.25 V
DVDD 4.75 5 5.25 V
OVDD 2.7 5.25 V
VCC 7 15 15.75 V
VEE −15.75 −15 0 V
Operating Current
8, 9
@ 750 kSPS throughput
AVDD
With Internal Reference 19.5 mA
With Internal Reference Disabled 18 mA
DVDD 6.5 mA
OVDD 0.5 mA
VCC VCC = 15 V, with internal reference buffer 3 mA
VCC = 15 V 2.3 mA
VEE VEE = −15 V 2 mA
Power Dissipation @ 750 kSPS throughput
With Internal Reference PDREF = PDBUF = low 205 230 mW
With Internal Reference Disabled PDREF = PDBUF = high 190 210 mW
In Power-Down Mode
10
PD = high 10 µW
TEMPERATURE RANGE
11
Specified Performance T
MIN
to T
MAX
−40 +85 °C
1
With V
IN
= 0 V to 5 V or 0 V to 10 V ranges, the input current is typically 70 A. In all input ranges, the input current scales with throughput. See the Analog Inputs section.
2
All specified performance is guaranteed up to 750 kSPS throughout, however throughputs up to 900 kSPS can be used with some linearity performance degradation.
3
Linearity is tested using endpoints, not best fit. All linearity is tested with an external 5 V reference.
4
LSB means least significant bit. All specifications in LSB do not include the error contributed by the reference.
5
All specifications in decibels are referred to a full-scale range input, FSR. Tested with an input signal at 0.5 dB below full-scale, unless otherwise specified.
6
Conversion results are available immediately after completed conversion.
7
4.75 V or V
REF
– 0.1 V, whichever is larger.
8
Tested in parallel reading mode.
9
With internal reference, PDREF = PDBUF = low; with internal reference disabled, PDREF = PDBUF = high. With internal reference buffer, PDBUF = low.
10
With all digital inputs forced to OVDD.
11
Consult sales for extended temperature range.