Datasheet

MCP4921/4922
DS21897A-page 2  2004 Microchip Technology Inc.
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 V
DD
2.7 — 5.5
Input Current - MCP4921
Input Current - MCP4922
I
DD
—
—
175
350
350
700
µA Input unbuffered, digital inputs
grounded, output unloaded,
code at 0x000
Hardware Shutdown Current I
SHDN
—0.3 2 µA
Software Shutdown Current I
SHDN_SW
—3.3 6 µA
Power-on-Reset Threshold V
POR
—2.0 — V
DC Accuracy
Resolution n 12 — — Bits
INL Error INL -12 2 12 LSB
DNL DNL -0.75 ±0.2 +0.75 LSB Device is Monotonic
Offset Error V
OS
— ±0.02 1 % of FSR Code 0x000h
Offset Error Temperature
Coefficient
V
OS
/°C — 0.16 — ppm/°C -45°C to 25°C
— -0.44 — ppm/°C +25°C to 85°C
Gain Error g
E
— -0.10 1 % of FSR Code 0xFFFh, not including offset
error.
Gain Error Temperature
Coefficient
∆G/°C — -3 — ppm/°C
Input Amplifier (V
REF
Input)
Input Range - Buffered Mode V
REF
0.040 — V
DD
– 0.040 V Note 1
Code = 2048
V
REF
= 0.2v p-p, f = 100 Hz and 1 kHz
Input Range - Unbuffered
Mode
V
REF
0— V
DD
V
Input Impedance R
VREF
— 165 — kΩ Unbuffered Mode
Input Capacitance -
Unbuffered Mode
C
VREF
—7 — pF
Multiplier Mode
-3 dB Bandwidth
f
VREF
— 450 — kHz V
REF
= 2.5V ±0.2Vp-p, Unbuffered,
G = 1
f
VREF
— 400 — kHz V
REF
= 2.5V ±0.2 Vp-p, Unbuffered,
G = 2
Multiplier Mode -
Total Harmonic Distortion
THD
VREF
—-73 — dBV
REF
= 2.5V ±0.2Vp-p,
Frequency = 1 kHz
Note 1: By design, not production tested.
2: Too small to quantify.