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The AD7714 is a complete analog front end for low-frequency measurement applications. The device accepts low level signals directly from a 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 three differential analog inputs (which can also be configured as five pseudo-differential analog inputs) as well as a differential reference input. The AD7714 thus performs all signal conditioning and conversion for a system consisting of up to five channels. A new Y grade has recently been added to the existing range. Compared to the A grades this new grade has an extended operating temperature range, schmitt trigger inputs on SCLK and DIN, tighter linearity specifications, lower power consumption and is available in a smaller package. The AD7714 is ideal for use in smart microcontroller- or DSP-based systems. It features a serial interface that can be configured for three-wire operation. Gain settings, signal polarity and channel selection can be configured in software using the serial port. The AD7714 provides 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 very low power dissipation, and the power-down mode reduces the standby power consumption to 15 µW typical at 3 V. Minimum operating voltage for the A grades is 3 V and 2.7 V for the Y grades. The A grades are available in a 24-pin, 0.3 inch-wide, plastic dual-in-line package (DIP); a 24 lead small outline (SOIC) package and a 28-lead shrink small outline package (SSOP). The new Y grade is available in a 24-pin, 0.3 inch-wide, plastic dual-in-line package (DIP); a 24 lead small outline (SOIC) package and a 24-lead Thin Shrink Small Outline Package (TSSOP).
input_capacitance | 7.00 pF |
supply_voltage_dc | 3.00 V (min) |
mil_spec | No |
power_dissipation | 7.00 mW |
reach_svhc_compliance | No SVHC |
lead_free_status | Contains Lead |
mounting_style | Surface Mount |
packaging | Bulk |
case_package | TSSOP |
sample_rate | 1.00 kHz |
supply_current | 1.10 mA |
lifecycle_status | Active |
input_impedance | 9.00 GΩ |
rohs_status | Compliant |
pin_count | 24 |
number_of_bits | 24 |
resolution_bits | 24.0 |
Resolution (Bits) | 24bit |
Sampling Rate | 1kSPS |
Supply Voltage Type | Single |
Supply Voltage Min | 3V |
Supply Voltage Max | 5.25V |
ADC / DAC Case Style | TSSOP |
No. of Pins | 24Pins |
Input Channel Type | Differential |
Data Interface | Serial |
Operating Temperature Min | -40°C |
Operating Temperature Max | 105°C |
Packaging | Each |
Product Range | 5 Channel 24-Bit Sigma-Delta ADCs |
Automotive Qualification Standard | - |
RoHS Phthalates Compliant | Yes |
MSL | MSL 1 - Unlimited |
SVHC | No SVHC (07-Jul-2017) |
Base Number | 7714 |
IC Case Style | TSSOP |
No. of Channels | 5Channels |
Operating Temperature Range | -40°C to +105°C |
Supply Current | 1.1mA |
Supply Voltage Range | 3V to 5.25V |
Supply Voltage Range - Analogue | 2.7V to 3.3V, 4.75V to 5.25V |
Supply Voltage Range - Digital | 2.7V to 5.25V |
Termination Type | Surface Mount Device |
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