MCP4921_07 Datasheet, PDF (2/42 Pages) Microchip Technology – 12-Bit DAC with SPI™ Interface

MCP4921/4922
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
V_DD ............................................................................................................. 6.5V
All inputs and outputs w.r.t ............. AV_SS –0.3V to V_DD+0.3V
Current at Input Pins ....................................................±2 mA
Current at Supply Pins ...............................................±50 mA
Current at Output Pins ...............................................±25 mA
Storage temperature .....................................-65°C to +150°C
Ambient temp. with power applied ................-55°C to +125°C
ESD protection on all pins ........... ≥ 4 kV (HBM), ≥ 400V (MM)
Maximum Junction Temperature (T_J) . .........................+150°C
† Notice: Stresses above those listed under “Maximum Rat-
ings” may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied. Expo-
sure to maximum rating conditions for extended periods may
affect device reliability.
5V AC/DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, V_DD = 5V, AV_SS = 0V, V_REF = 2.048V, output buffer gain (G) = 2x, R_L = 5 kΩ
to GND, C_L = 100 pF T_A = -40 to +85°C. Typical values at +25°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Power Requirements
Input Voltage
Input Current - MCP4921
Input Current - MCP4922
V_DD
2.7
I_DD
—
—
Hardware Shutdown Current
Software Shutdown Current
Power-on-Reset Threshold
DC Accuracy
Resolution
INL Error
DNL
Offset Error
Offset Error Temperature
Coefficient
Gain Error
Gain Error Temperature
Coefficient
Input Amplifier (V_REF Input)
Input Range - Buffered Mode
Input Range - Unbuffered
Mode
Input Impedance
Input Capacitance -
Unbuffered Mode
Multiplier Mode
-3 dB Bandwidth
I_SHDN
—
I_{SHDN_SW}
—
V_POR
—
n
INL
DNL
V_OS
V_OS/°C
g_E
ΔG/°C
12
-12
-0.75
—
—
—
—
—
V_REF
V_REF
R_VREF
C_VREF
f_VREF
f_VREF
0.040
0
—
—
—
—
Multiplier Mode -
Total Harmonic Distortion
THD_VREF
—
Note 1: By design, not production tested.
2: Too small to quantify.
—
175
350
0.3
3.3
2.0
—
2
±0.2
±0.02
0.16
-0.44
-0.10
-3
5.5
350
µA Input unbuffered, digital inputs
700
grounded, output unloaded,
code at 0x000
2
µA
6
µA
—
V
—
12
+0.75
1
—
—
1
—
Bits
LSB
LSB Device is Monotonic
% of FSR Code 0x000h
ppm/°C -45°C to 25°C
ppm/°C +25°C to 85°C
% of FSR Code 0xFFFh, not including offset
error.
ppm/°C
— V_DD – 0.040
V
Note 1
—
V_DD
V
Code = 2048
V_REF = 0.2v p-p, f = 100 Hz and 1 kHz
165
—
kΩ Unbuffered Mode
7
—
pF
450
—
400
—
-73
—
kHz V_REF = 2.5V ±0.2Vp-p, Unbuffered,
G=1
kHz V_REF = 2.5V ±0.2 Vp-p, Unbuffered,
G=2
dB
V_REF = 2.5V ±0.2Vp-p,
Frequency = 1 kHz
DS21897B-page 2
© 2007 Microchip Technology Inc.