REF34-Q1
SBAS901C – JULY 2018 – REVISED OCRTOEBFE3R42-Q0210
SBAS901C – JULY 2018 – REVISED OCTOBER 2020
www.ti.com
REF34-Q1 Low-Drift, Low-Power, Small-Footprint Series
Voltage References
1 Features
3 Description
•
AEC-Q100 qualified with the following results:
– Device temperature grade 1: –40°C to +125°C
ambient operating temperature
– Device HBM ESD classification level 2
– Device CDM ESD classification level C6
Initial accuracy: ±0.05% (maximum)
Temperature coefficient : 6 ppm/°C (maximum)
Operating temperature range: −40°C to +125°C
Output voltage options: 2.5V, 3.0V, 3.3V, 4.096V,
5.0V
The REF34-Q1 devices are low-temperature-drift
(6 ppm/°C), low-power, high-precision CMOS voltage
references. The devices have ±0.05% initial accuracy
and low operating current with power consumption
less than 95 μA. These devices also offer very low
output noise of 3.8 µVPP/V, which enable the devices
to maintain high signal integrity with high-resolution
data converters and noise critical systems.
•
•
•
•
Stability and system reliability are further improved by
the low output-voltage hysteresis of these devices and
low long-term output voltage drift. Furthermore, the
small size and low operating current of the devices
(95 μA) make them an excellent choise for battery-
powered applications. The REF34-Q1 features an
enable pin that can set the device into shutdown
where it consumes a low stand by current (3 μA) to
help with overall system power during standby.
•
•
•
•
•
•
•
Output current: ±10 mA
Low quiescent current: 95 μA (maximum)
Low shutdown mode current: 3 μA (maximum)
Wide input voltage: 12 V
Output 1/f noise (0.1 Hz to 10 Hz): 3.8 µVPP/V
Excellent long-term stability 25 ppm/1000 hrs
Available in 6-pin and 5-Pin SOT-23 package and
8-pin MSOP package
The REF34-Q1 family is specified for the wide
temperature range of −40°C to +125°C. Contact the
TI sales representative for additional voltage options.
2 Applications
Device Information (1)
•
•
•
•
•
Body control modules
On board chargers
Traction inverters
Battery management systems
Advanced driver assistance systems
PART NUMBER
PACKAGE
BODY SIZE (NOM)
2.90 mm × 1.60 mm
2.90 mm × 1.60 mm
4.00 mm × 4.00 mm
REF34xx-Q1
SOT-23 (6)
REF34xxS-Q1
REF34xx-Q1
SOT-23 (5)
VSSOP (8)
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
3V VDD
0.4
0.36
+125°C
VDD
2.5V VREF
AIN0
0.32
VREF+
OUT
GND
IN
EN
AIN1
AIN2
AIN3
0.28
VREF-
+25°C
0.24
REF3425-Q1
ADS7828-Q1
0.2
-40°C
0.16
3.3V VDD
0.12
0.08
0.04
0
I2C
VDD
GPIO0
GPIOx
I2C
TDA2 (MCU)
-10
-5
0
Load Current (mA)
5
10
drop
Copyright © 2017, Texas Instruments Incorporated
Dropout vs Current Load Over Temperature
Simplified Schematic
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Copyright © 2020 Texas Instruments Incorporated
Submit Document Feedback
1
Product Folder Links: REF34-Q1