Charge Balancing ADC
24 Bits, No Missing Codes
u2d1e0.0015% Nonlinearity
2-Channel Programmable Gain Front End
Gains from 1 to 128
Differential Inputs
Low-Pass Filter with Programmable Filter Cutoffs
Ability to Read/Write Calibration Coefficients
Bidirectional Microcontroller Serial Interface
Internal/External Reference Option
Single- or Dual-Supply Operation
Low Power (25 mW Typ) with Power-Down Mode
(7 mW Typ)
The AD7710 is a complete analog front end for low frequency measurement applications. The device accepts low level signals directly from a strain gage or transducer and outputs a serial digital word. It employs a sigma-delta conversion technique to realize up to 24 bits of no missing codes performance. The input signal is applied to a proprietary programmable gain front end based around an analog modulator. The modulator output is processed by an on-chip digital filter. The first notch of this digital filter can be programmed via the on-chip control register, allowing adjustment of the filter cutoff and settling time. The part features two differential analog inputs and a differen- tial reference input. Typically, one of the channels will be used as the main channel with the second channel used as an auxil- iary input to measure a second voltage periodically. It can be operated from a single supply (by tying the VSS pin to AGND), provided that the input signals on the analog inputs are more positive than –30 mV. By taking the VSS pin negative, the part can convert signals down to –VREF on its inputs. The AD7710 thus performs all signal conditioning and conversion for a single- or dual-channel system. The AD7710 is ideal for use in smart, microcontroller based systems. Input channel selection, gain settings, and signal polar- ity can be configured in software using the bidirectional serial port. The AD7710 contains self-calibration, system calibration, and background calibration options, and also allows the user to read and write the on-chip calibration registers. CMOS construction ensures low power dissipation, and a soft- ware programmable power-down mode reduces the standby power consumption to only 7 mW typical. The part is available in a 24-lead, 0.3 inch-wide, plastic and hermetic dual-in-line package (DIP) as well as a 24-lead small outline (SOIC) package.
Specifications
Resolution (Bits):
24bit
Sampling Rate:
1.02kSPS
Input Channel Type:
Single Ended
Data Interface:
Serial
Supply Voltage Type:
Single
Supply Voltage Min:
4.75V
Supply Voltage Max:
5.25V
ADC / DAC Case Style:
DIP
No. of Pins:
24Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
Dual 24-Bit Sigma-Delta ADCs
Automotive Qualification Standard:
-
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (07-Jul-2017)
Base Number:
7710
IC Case Style:
DIP
IC Generic Number:
7710
Linearity Error:
0.0015%
Logic Function Number:
7710
No. of Bits:
21bit
No. of Channels:
2Channels
Operating Temperature Range:
-40°C to +85°C
Supply Current:
4.5mA
Supply Voltage Range:
4.75V to 5.25V
Supply Voltage Range - Analogue:
5V to 10V
Supply Voltage Range - Digital:
4.75V to 5.25V
Alternate Descriptions
RS Components
24-BIT ADC w Curr Source AD7710ANZ
Newark Electronics
Analogue to Digital Converter, 24 bit, 1.02 kSPS, Single, 4.75 V, 5.25 V, DIP RoHS Compliant: Yes
